DIN 48 SIZE DIGITAL TIMER. UL File No.: E C-UL File No.: E122222

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1 DIN SIZE DIGIAL L4H/-L imers L4H imers Pin type 4..9 mm inch Screw terminal type RoHS Directive compatibility information UL File No.: E C-UL File No.: E Features. Bright and Easy-to-Read Display A brand new bright -color back light LCD display. he easy-to-read screen in any location makes checking and setting procedures a cinch.. Simple Operation Seesaw buttons make operating the unit even easier than before.. Short Body of only 4. mm.9 inch (screw terminal type) or. mm. inch (pin type) With a short body, it is easy to install in even narrow control panels. 4. Conforms to IP s Weather Resistant Standards he water-proof panel keeps out water and dirt for reliable operation even in poor environments.. Screw terminal (M.) and Pin ypes are Both Standard Options he two terminal types are standard options to support either front panel installation or embedded installation.. Changeable Panel Cover Also offers a black panel cover to meet your design considerations.. Compliant with UL, c-ul and CE. Product types ime range mode Output voltage Power down insurance erminal type Part number s (. s~) s (. s~) s (. s~) 9999 s ( s~) 99 min 9 s ( s~) min (. min~) 99 h 9 min ( min~) h (. h~) Power delay () Power delay () Signal delay Signal delay Pulse One-shot Pulse -delay Signal Flicker otalizing -delay ( modes) Relay ( c) ransistor ( a) * A rubber gasket (AC) and a mounting frame (A-DA4) are included. to 4 V AC 4 V AC to 4 V DC to 4 V AC 4 V AC to 4 V DC Available pins L4H-AC4V pins Screw terminal pins Screw terminal pins Screw terminal pins Screw terminal L4H-AC4V L4H-AC4VS pins L4H-AC4V pins Screw terminal L4H-AC4V L4H-AC4VS pins L4H-DC4V pins L4H-AC4V L4H-AC4V L4H-AC4VS pins L4H-AC4V pins Screw terminal L4H-DC4V L4H-DC4VS L4H-AC4V L4H-AC4VS pins L4H-DC4V L4H-DC4V L4H-DC4VS

2 L4H-L imers 4..9 mm inch UL File No.: E C-UL File No.: E Features. Economically priced in anticipation of market needs. Economically priced to provide excellent cost performance.. Display is a bright reflective-type LCD.. Inherits all of the characteristics of the L4H digital timer. Seesaw switches ensure easy operation. IP environmental protection. Shortened body (. mm. inch underhead). L4H/-L 4. Compliant with UL, c-ul and CE. Product types Product name ime range mode Output voltage Power down insurance erminal type Part number L4H-L digital timer Part names s (. s~) s (. s~) s (. s~) 9999 s ( s~) 99 min 9 s ( s~) min (. min~) 99 h 9 min ( min~) h (. h~) Power delay () Power delay () Signal delay Signal delay Pulse One-shot Pulse -delay Signal Flicker otalizing -delay ( modes) Relay ( c) ransistor ( a) to 4 V AC 4 V AC/DC to 4 V DC to 4 V AC 4 V AC/DC to 4 V DC Available pins L4HL-AC4V L4HL-AC4V L4HL-DC4V L4HL-AC4V L4HL-AC4V L4HL-DC4V ime delay indicator Controlled output indicator indicator indicator switch switch OP. RS L4H h m s (Countdown time display) Elapsed time display Set time display ime units display Up keys Down keys 4 (Same for screw terminal type and -pin type) DIP switches

3 L4H/-L Specifications Item Rating ime accuracy (max.) Contact Life Electrical Mechanical conditions Rated operating voltage ype Rated frequency Rated power consumption Rated control capacity ime range ime counting direction Operation mode // input input Input signal Indication Power failure memory method time fluctuation emperature error Voltage error Setting error Contact arrangement Contact resistance (Initial value) Contact material Mechanical (contact) Electrical (contact) Allowable operating voltage range Breakdown voltage (Initial value) Insulation resistance (Initial value) voltage reset time emperature rise Vibration resistance Shock resistance Connection Protective construction Functional Destructive Functional Destructive Ambient temperature Ambient humidity Air pressure Ripple rate Applicable standard Ralay output type AC type AC/DC type DC type to 4 V AC, 4 V AC, to 4 V DC 4 V AC/DC / Hz common Max. V A Max. W A, V AC (resistive load) s, s, s, 9999 s, 99 min 9 s, min, 99 h 9 min, h (selected by DIP switch) Addition ()/Subtraction () ( directions selectable by DIP switch) A (Power delay ), A (Power delay ), B (Signal delay), C (Signal delay), D (Pulse one-shot), E (Pulse delay), F (Signal Flicker), G (otalizing delay) (selectable by DIP switch) Min. input signal width: ms, ms ( directions by selected by DIP switch) (he -pin type does not have a stop input.) Min. input signal width: ms (he -pin type does not have a lock input.) Open collector input Input impedance: Max. kω; Residual voltage: Max. V Open impedance: kω or less, Max. energized voltage: 4V DC -segment LCD (L4H, L4H-L common), Elapsed value (backlight red LED), Setting value (backlight yellow LED) ± (. % + ms) in case of power on start ± (. % + ms) in case of input signal start imed-out Form C mω (at A V DC) Ag alloy/au flash Min. ope. (Except for switch operation parts) EEP-ROM (Min. overwriting) voltage: to % [ ] emperature: to + C +4 to + F Min. input signal width: ms. ope. (At rated control voltage) Min. ope. (At rated control voltage) to % of rated operating voltage, Vrms for min: Between live and dead metal parts (-pin), Vrms for min: Between input and output, Vrms for min: Between contacts Between live and dead metal parts Min. MΩ: Between input and output (At V DC) Between contacts Max.. s ransistor output type AC type AC/DC type to 4 V AC, 4 V AC, 4 V AC/DC / Hz common Max. V A ma, V DC DC type to 4 V DC Max. W imed-out Form A (Open collector), Vrms for min: Between live and dead metal parts (Pin type), Vrms for min: Between input and output Min. MΩ: Between live and dead metal parts Between input and output Max. C (under the flow of nominal operating current at nominal voltage) to Hz: cycle/min single amplitude of. mm.4 inch ( min on axes) to Hz: cycle/min single amplitude of. mm. inch ( h on axes) Min. 9 m. ft./s (4 times on axes) Min. 94 m 94. ft./s ( times on axes) C to C +4 F to + F Max. % RH (non-condensing) to, h Pa % or less % or less -pin/-pin/screw terminal IP (front panel with rubber gasket) Safety standard EN- Pollution Degree /Overvoltage Category II EMC (EMI)EN--4 Radiation interference electric field strength Noise terminal voltage (EMS)EN-- Static discharge immunity RF electromagnetic field immunity EF/B immunity Surge immunity Conductivity noise immunity Power frequency magnetic field immunity Voltage dip/instantaneous stop/voltage fluctuation immunity EN Group ClassA EN Group ClassA EN-4-4 kv contact kv air EN-4- V/m AM modulation ( MHz to GHz) V/m pulse modulation (9 MHz to 9 MHz) EN-4-4 kv (power line) kv (signal line) EN-4- kv (power line) EN-4- V/m AM modulation (. MHz to MHz) EN-4- A/m ( Hz) EN-4- ms, % (rated voltage) ms, % (rated voltage), ms, % (rated voltage), ms, 9% (rated voltage) (At V DC)

4 Dimensions L4H digital timer Screw terminal type (Flush mount) Pin type (Flush mount/surface mount) L4H/-L (units: mm inch) olerance: ±. ± OP. RS h m s L4H Dimensions for embedded installation (with adapter installed) Screw terminal type Pin type Rubber gasket AC (supplied) Panel Mounting frame for flush mount A-DA4 (supplied) Rubber gasket AC (supplied) Panel Mounting frame for flush mount A-DA4 (supplied) -pin type (p cap AD-RC sold separately) -pin type (p cap A-DP sold separately) OP. RS h m s OP. RS h m s.99.9 L4H L4H Dimensions for front panel installations DIN rail terminal block (-pin type A-DFK sold separately) (-pin type A-DFK sold separately) Device installation rail A-DLA (sold separately) 9. (9.). (.4) ( ) dimension is for -pin type. Installation panel cut-out dimensions he standard panel cut-out dimensions are shown below. Use the mounting frame (A-DA4) and rubber gasket (AC). min min For connected installations Note) : he installation panel thickness should be between and mm.9 and.9 inch. Note) : For connected installations, the waterproofing ability between the unit and installation panel is lost. A A = ( n.) +. erminal layouts and Wiring diagrams -pin type Relay output type ransistor output type 4 N.C. voltage + Screw terminal type Relay output type 9 N.C. N.O. N.O. 4 voltage + ransistor output type 9 -pin type Relay output type 4 9 voltage + N.C. N.O. ransistor output type 4 9 voltage + + voltage 4 + voltage 4 Note) For connecting the output leads of the transistor output type, refer to ) ransistor output on page.

5 L4H/-L Setting the operation mode, time range, and time Setting procedure ) Setting the operation mode and time range Set the operation mode and time range with the DIP switches on the side of the L4H timer. DIP switches *4 Item DIP switch Operation mode Refer to table Minimum input reset, start, and stop signal width ms ms ime delay direction Addition Subtraction ime range Refer to table * he -pin type does not have the stop input, so that the dip switch can be changed over between reset and start inputs. he signal range of the lock input is fixed (minimum ms). 4 DIP switches able : Setting the operation mode DIP switch No. Operation mode A: Power on delay A: Power on delay B: Signal on delay C: Signal off delay D: Pulse One shot E: Pulse On delay F: Signal Flicker G: otalizing On delay able : Setting the time range DIP switch No. ime range. s to s. s to s. s to s s to 9999 s min s to 99 min 9 s. min to min h min to 99 h 9 min. h to h (Same for screw terminal type) Notes: ) Set the DIP switches before installing the timer. ) When the DIP SW setting is changed, turn off the power once. ) he DIP switches are set as before shipping. Setting procedure ) Setting the time Set the set time with the keys ( and keys) on the front of the L4H timer. Front display section Q Elapsed time display W Set time display E ime delay indicator R Controlled output indicator indicator Y indicator U ime units display Changing the set time. It is possible to change the set time with the up and down keys even during time delay with the timer. However, be aware of the following points. ) If the set time is changed to less than the elapsed time with the time delay set to the addition direction, time delay will continue until the elapsed time reaches full scale, returns to zero, and then reaches the new set time. If the set time 4 OP. RS L4H h m s is changed to a time above the elapsed time, the time delay will continue until the elapsed time reaches the new set time. ) If the time delay is set to the subtraction direction, time delay will continue until regardless of the new set time.. If the set time is changed to, the unit will operate differently depending on the operation mode. ) If the operation mode is set to A (power on delay ) or A (power on Power failure memory he EEPROM is used for power failure memory. It has a life of Min. over-writings. he EEPROM is overwriting with the following timing. Output mode Overwrite timing Power delay () A When power is Addition G Change of preset value or start, reset input When power is after being Other modes When power is after changing preset value 9 I keys Changes the corresponding digit of the set time in the addition direction (upwards) O keys Changes the corresponding digit of the set time in the subtraction direction (downwards) P switch s the elapsed time and the output { switch s the operation of all keys on the unit delay ), the output will turn on when the power is turned on. However, the output will be off while reset is being input. ) In the other modes, the output turns on when the start is input. When the operation mode is C (signal off delay), D (Pulse one shot), or F (Signal flicker), only when the start input is on does the output turn on. Also, when the reset is being input, the output is off. * Be aware that the contents of EEPROM for all modes will be overwritten when power is turned during input to external lock terminals R to E and to. Such an action does not exist by doing lock operation from the front.

6 Operation mode Operation type Power on delay () A Explanation Set the operation mode section of the DIP switches (no. s,, and ) on the side of the timer as shown. Clears elapsed time value and starts time delay at power. After timer completion, stops at the display of the set value (addition), or stops at (subtraction). Ignores start input. s delay time operation at stop. Restarts delay time operation at stop. Power Output : Set time t, t, t, ta< ime chart t t t+t= L4H/-L Power on delay () A Set the operation mode section of the DIP switches (no. s,, and ) on the side of the timer as shown. Elapsed time value does not clear at power. (power outage countermeasure function) he output remains even after the power is cut and restarted. After timer completion, stops at the display of the set value (addition), or stops at (subtraction). Ignores start input. s delay time operation at stop. Restarts delay time operation at stop. Power Output t t t+t= Signal on delay B Set the operation mode section of the DIP switches (no. s,, and ) on the side of the timer as shown. Clears elapsed time value at power. ime delay starts at start and elapsed time value or output resets at start. Instantaneous time delay start at reset and power while start is. s delay time operation at stop. Restarts delay time operation at stop. In order to have the time delay start at power or reset at power, short out the start input beforehand. Power Output t t t+t= Signal off delay C Set the operation mode section of the DIP switches (no. s,, and ) on the side of the timer as shown. Clears elapsed time value at power. Output control at start and time delay start at start. Elapsed time value clears when start goes again during time delay. s delay time operation at stop. Restarts delay time operation at stop. Power Output >ta+tb >t ta tb t Notes: ) Each signal input (start, reset, stop, and lock) is applied by shorting their input terminal to the common terminal (terminal Q for the -pin type, terminal E for the -pin type, and terminal for the screw terminal type). ) he -pin type does not have a stop input or lock input.

7 L4H/-L : Set time t, t, t, ta< Operation type Explanation ime chart Pulse One-shot D Set the operation mode section of the DIP switches (no. s,, and ) on the side of the timer as shown. Clears elapsed time value at power. ime delay starts and output control at start. urns output control and clears elapsed time value at time-up. Ignores start input during time delay. s delay time operation at stop. Restarts delay time operation at stop. In order to have the time delay start at power or reset at power, short out the start input beforehand. Power Output >ta =t+t ta t t t Pulse On delay E Set the operation mode section of the DIP switches (no. s,, and ) on the side of the timer as shown. Clears elapsed time value at power. ime delay starts at start. Ignores start input during time delay. s delay time operation at stop. Restarts delay time operation at stop. In order to have the time delay start at power or reset at power, short out the start input beforehand. Power Output =t+t t t Signal Flicker F Set the operation mode section of the DIP switches (no. s,, and ) on the side of the timer as shown. Clears elapsed time value at power. ime delay starts at start. Ignores start input during time delay. Output control reverses, elapsed time value clears, and timer delay starts at timer completion. s delay time operation at stop. Restarts delay time operation at stop. In order to have the time delay start at power or reset at power, short out the start input beforehand. Power Output =t+t t t ta >ta =t+t t t otalizing On delay G Set the operation mode section of the DIP switches (no. s,, and ) on the side of the timer as shown. Elapsed time value does not clear at power. (power outage countermeasure function) he output remains even after the power is off and restarted. s delay time operation at stop. Restarts delay time operation at stop. Power Output =t+t+t >ta t t t ta Notes: ) Each signal input (start, reset, stop, and lock) is applied by shorting their input terminal to the common terminal (terminal Q for the -pin type, terminal E for the -pin type, and terminal for the screw terminal type). ) he -pin type does not have a stop input or lock input.

8 DIN SIZE DIGIAL L4H-W imers L4H-W 4..9 mm inch -pin type -pin type Screw terminal type RoHS Directive compatibility information UL File No.: E C-UL File No.: E Features. Wide time range he operation time range covers from. sec. to 9999 hours. he individual setting can be performed on each of and timers s 99min9s 99h9min 999.9s 999.9min 999.9h 9999s 9999h. Bright and Easy-to-Read Display A brand new bright -color back light LCD display. he easy-to-read screen in any location makes checking and setting procedures a cinch.. Simple Operation Seesaw buttons make operating the unit even easier than before. 4. Short Body of only 4. mm.9 inch (screw terminal type) or. mm. inch (pin type) With a short body, it is easy to install in even narrow control panels.. Conforms to IP s Weather Resistant Standards he water-proof panel keeps out water and dirt for reliable operation even in poor environments.. Screw terminal (M.) and Pin ypes are Both Standard Options he two terminal types are standard options to support either front panel installation or embedded installation.. Changeable Panel Cover Also offers a black panel cover to meet your design considerations.. Compliant with UL, c-ul and CE. 9. Low Price All this at an affordable price to provide you with unmatched cost performance. Product types ime range mode Output voltage Power down insurance erminal type Part number pins L4HW-AC4V to 4 V AC pins L4HW-AC4V Screw terminal L4HW-AC4VS pins L4HW-AC4V Relay ( c) 4 V AC pins L4HW-AC4V Screw terminal L4HW-AC4VS Pulse input: 99.99s pins L4HW-DC4V Delayed one shot 999.9s -start flicker to 4 V DC pins L4HW-DC4V 9999s -start flicker 99min9s Screw terminal L4HW-DC4VS Available 999.9min Integrating input: pins L4HW-AC4V 99h9min Delayed one shot 999.9h to 4 V AC pins L4HW-AC4V -start flicker 9999h -start flicker Screw terminal L4HW-AC4VS pins L4HW-AC4V ransistor ( a) 4 V AC pins L4HW-AC4V Screw terminal L4HW-AC4VS pins L4HW-DC4V to 4 V DC pins L4HW-DC4V Screw terminal L4HW-DC4VS * A rubber gasket (AC) and a mounting frame (A-DA4) are included.

9 L4H-W Part names / Operation display Display for change-over between / settings Controlled output indicator indicator switch Set/ switch OP. SE/ L4H-W h m s (Subtraction elapsed time display) Elapsed time display Set time display ime units display Up keys Down keys 4 DIP switches Fourth digit First digit (Same for -pin and screw terminal type) Specifications Item Rating ime accuracy (max.) Contact Life Electrical Mechanical conditions ype Rated operating voltage Rated frequency Rated power consumption Rated control capacity ime range ime counting direction Operation mode // input input Input signal Indication Power failure memory method time fluctuation emperature error Voltage error Setting error Contact arrangement Contact resistance (Initial value) Contact material Mechanical (contact) Electrical (contact) Allowable operating voltage range Breakdown voltage (Initial value) Insulation resistance (Initial value) voltage reset time emperature rise Vibration resistance Shock resistance Connection Protective construction Functional Destructive Functional Destructive Ambient temperature Ambient humidity Air pressure Ripple rate Ralay output type AC type to 4 V AC, 4 V AC / Hz common Max. V A A, V AC 99.99s, 999.9s, 9999s, 99min9s, 999.9min, 99h9min, 999.9h, 9999h (selected by DIP switch) Addition ()/Subtraction () ( directions selectable by DIP switch) Pulse input: Delayed one shot, -start flicker or -start flicker Integrating input: Delayed one shot, -start flicker or -start flicker Min. input signal width: ms, ms ( directions by selected by DIP switch) (he pin type does not have a stop input.) Min. input signal width: ms (he -pin type does not have a lock input.) Open collector input Input impedance: Max. kω; Residual voltage: Max. V Open impedance: kω or less, Max. energized voltage: 4 V DC -segment LCD, Elapsed value (backlight red LED), Setting value (backlight yellow LED) ± (.% + ms) in case of power on start ± (.% + ms) in case of input signal start imed-out Form C mω (at A V DC) Ag alloy/au flash DC type to 4 V DC Max. W Min. ope. (Except for switch operation parts) Min. ope. (At rated control voltage) EEP-ROM (Min. overwriting) to % of rated operating voltage, Vrms for min: Between live and dead metal parts (-pin type only), Vrms for min: Between input and output, Vrms for min: Between contacts Between live and dead metal parts Min. MΩ: Between input and output (At V DC) Between contacts Max.. s ransistor output type AC type DC type to 4V AC, 4V AC to 4 V DC / Hz common Max. V A Max. W ma, V DC voltage: % to % [ emperature: C to + C +4 F to + F Min. input signal width: ms ] imed-out Form A (Open collector) Min. ope. (At rated control voltage), Vrms for min: Between live and dead metal parts (Pin type only), Vrms for min: Between input and output Min. MΩ: Between live and dead metal parts Between input and output Max C (under the flow of nominal operating current at nominal voltage) to Hz: cycle/ min single amplitude of. mm.4 inch ( min on axes) to Hz: cycle/ min single amplitude of. mm. inch ( h on axes) Min. 9 m. ft./s (4 times on axes) Min. 94 m 94. ft./s ( times on axes) C to C +4 F to + F Max. % RH (non-condensing) to, h Pa % or less % or less -pin/-pin/screw terminal IP (front panel with rubber gasket) (At V DC)

10 Applicable standard Safety standard EN- Pollution Degree /Overvoltage Category II EMC Dimensions L4H-W digital timer (EMI)EN--4 Radiation interference electric field strength Noise terminal voltage (EMS)EN-- Static discharge immunity RF electromagnetic field immunity EF/B immunity Surge immunity Conductivity noise immunity Power frequency magnetic field immunity Voltage dip/instantaneous stop/voltage fluctuation immunity Screw terminal type (Flush mount) EN Group ClassA EN Group ClassA EN-4-4 kv contact kv air EN-4- V/m AM modulation ( MHz to GHz) V/m pulse modulation (9 MHz to 9 MHz) EN-4-4 kv (power line) kv (signal line) EN-4- kv (power line) EN-4- V/m AM modulation (. MHz to MHz) EN-4- A/m ( Hz) EN-4- ms, % (rated voltage) ms, % (rated voltage), ms, % (rated voltage), ms, 9% (rated voltage) Pin type (Flush mount/surface mount) L4H-W (units: mm inch) olerance: ±. ± OP. h m s SE/ L4H-W (Same for -pin type) Dimensions for flush mount (with adapter installed) Screw terminal type Pin type Rubber gasket AC (supplied) Panel Mounting frame for flush mount A-DA4 (supplied) Rubber gasket AC (supplied) Panel Mounting frame for flush mount A-DA4 (supplied) -pin type (p cap AD-RC sold separately) -pin type (p cap A-DP sold separately) OP. h m s OP. h m s.99.9 SE/ SE/ L4H-W L4H-W Dimensions for front panel installations 9. (9.). (.4) DIN rail terminal block (-pin type A-DFK sold separately) (-pin type A-DFK sold separately) Device installation rail A-DLA (sold separately) ( ) dimension is for -pin type. Installation panel cut-out dimensions he standard panel cut-out dimensions are shown below. Use the mounting frame (A-DA4) and rubber gasket (AC). min..min min..min. For connected installations When n timers are continuously installed, the dimension (A) is calculated according to the following formula (n: the number of the timers to be installed): A=( n.) +. A=( n.9) +.4 Note) : he installation panel thickness should be between and mm.9 and.9 inch. Note) : For connected installations, the waterproofing ability between the unit and installation panel is lost. A

11 L4H-W erminal layouts and Wiring diagrams -Pin type Relay output type ransistor output type -Pin type Relay output type ransistor output type N.C. 4 ( ) voltage (+) N.O. 4 ( ) voltage (+) 4 9 voltage + N.C. N.O. 4 9 voltage + Screw terminal type Relay output type ransistor output type 9 N.C. N.O Note) For connecting the output leads of the transistor output type, refer to ) ransistor output on page. + voltage + voltage

12 Setting the operation mode and time range Setting procedure ) Setting the time range (imer /imer ) Set the time range with the DIP switches on the side of the L4H-W timer. *4 Item ime range (imer ) DIP switch Refer to table Minimum input reset, start, and stop signal width ms ms ime delay direction Addition Subtraction ime range (imer ) Refer to table * he -pin type does not have the stop input, so that the dip switch can be changed over between reset and start inputs. he signal range of the lock input is fixed (minimum ms). 4 DIP switches Setting procedure ) Setting the operation mode Set the operation mode with the keys on the front of the L4H-W timer. Front display section Q Elapsed time display W Set time display E / operation indicator R / setting value selectable indicator Controlled output indicator Y indicator U ime units display (same for screw terminal type and -pin type.) 4 SE/ OP. L4H-W h Fourth digit m s First digit 9 able : Setting the time range (imer ) DIP switch No. ime range. s to s. s to s s to 9999 s min s to 99 min 9 s. min to min h min to 99 h 9 min. h to h h to 9999 h able : Setting the time range (imer ) DIP switch No. ime range. s to s. s to s s to 9999 s min s to 99 min 9 s. min to min h min to 99 h 9 min. h to h L4H-W h to 9999 h Notes: ) Set the DIP switches before installing the timer. ) When the DIP SW setting is changed, turn off the power once. ) he DIP switches are set as before shipping. I keys Changes the corresponding digit of the set time in the addition direction (upwards) O keys Changes the corresponding digit of the set time in the subtraction direction (downwards) P switch s the elapsed time and the output { SE/ switch Changes over the display between / settings, sets the operation mode, checks the operation mode and locks the operation of each key (such as up, down or reset key). ) Setting or changing the operation mode Ex: Setting operation mode display () When the or key at the first digit is pressed with the SE/ (PULSE-A example) switch pressed, the mode is changed over to the setting mode. () Now release the SE/ switch. () he operation mode in the setting mode is changed over sequentially in the left or right direction by pressing the or key at the first digit, respectively. Pulse input -start One operation Pulse input -start Repeating operation Pulse input -start Repeating operation Integrating input -start One operation Integrating input -start Repeating operation Integrating input -start Repeating operation (4) he operational mode displayed at present is set by pressing the switch, and the display returns to the normal condition. ) Setting (changing) the time () Pressing the SE/ key switches the set value display between and. Display the timer ( or ) which is to be set (or changed). () After displaying the timer ( or ) which is to be set, press the or key to change the time. Checking the operation mode When the or key at the second digit is pressed with the SE/ switch pressed, the operational mode can be checked. he display returns to the normal condition after indicating the operational mode for about two seconds. (While the display indicates the operational mode for about two seconds, the other indicators continue to operate normally.) Setting the lock When the or key at the fourth digit is pressed with the SE/ switch pressed, all keys on the unit are locked. he timer does not accept any of, and keys. o release the lock setting, press the or key at the fourth digit again with the set/lock switch pressed. * Operational mode, adding and subtracting and minimum input signal range cannot be set at and, respectively. Changing over the / setting display he / setting display is changed over by pressing the SE/ switch. (his operation gives no effect on the other operations. he set time and elapsed time (residual time) at are linked with those at.) Changing the set time ) It is possible to change the set time with the and keys even during time delay with the timer. However, be aware of the following points. () If the set time is changed to less than the elapsed time with the time delay set to the addition direction, time delay will continue until the elapsed time reaches full scale, returns to zero, and then reaches the new set time. If the set time is changed to a time above the elapsed time, the time delay will continue until the elapsed time reaches the new set time. () If the time delay is set to the subtraction direction, time delay will continue until regardless of the new set time. ) When the set times at and are set to, the output becomes only while the start input is carried out. However, while the reset input is carried out, the output becomes.

13 L4H-W OPERAI MODE PULSE : Pulse input INEGRAI : Integrating input PULSE A -start/ operation t <, t < INEGRAI A -start/ operation t <, t < Power ta+tb= tc+td= Power ta+tb= tc+td= te+tf= tg+th= A Delayed one shot Output ta tb tc td t t Output ta tb tc td te tf tg th t t Elapsed value cleared when power is turned on. ime limit start initiated when start input goes on; start input ignored if time limit interval is in progress. Elapsed value cleared when one operation has been completed. Elapsed value not cleared when power is turned on (power failure backup function). When power is turned back on, same status is maintained for output as that previous to power going off. Elapsed value cleared when one operation has been completed. PULSE B -start/repeating operation t <, t < INEGRAI B -start/repeating operation t <, t < Power ta+tb= tc+td= Power ta+tb= tc+td= te+tf= tg+th= B -start flicker Output ta tb tc td t t Output ta tb tc td te tf tg th t t Elapsed value cleared when power is turned on. ime limit start initiated when start input goes on; start input ignored if time limit interval is in progress. Elapsed value not cleared when power is turned on (power failure backup function). When power is turned back on, same status is maintained for output as that previous to power going off. PULSE C -start/repeating operation t <, t < INEGRAI C -start/repeating operation t <, t < Power ta+tb= tc+td= Power ta+tb= tc+td= te+tf= tg+th= C -start flicker Output ta tb tc td t t Output ta tb tc td te tf tg th t t Elapsed value cleared when power is turned on. ime limit start initiated when start input goes on; start input ignored if time limit interval is in progress. Elapsed value not cleared when power is turned on (power failure backup function). When power is turned back on, same status is maintained for output as that previous to power going off. Remarks and notes he pulse input mode starts the operation by starting the start input. When using the unit by starting it with the power on, shortcircuit the start terminal (-pin: Q to R, -pin: E to Y and screw terminal: to 9 ). he integrating input mode is operated by the integrated time of the start input. In other word, the timer operates only when the start input is performed. When the elapsed value is cleared by the reset input, the output is reset. When using the unit by starting it with the power on, shortcircuit the start terminal (-pin: Q to R, -pin: E to Y and screw terminal: to 9 ). Each signal input such as start, reset, stop and lock inputs is applied by short-circuiting its input terminal and common terminal (-pin type: terminal Q, -pin type: terminal E and screw terminal: terminal ) respectively. he -pin type does not have a stop input or lock input.

14 PRECAUIS IN USING HE L4H SERIES. erminal wiring ) When wiring the terminals, refer to the terminal layout and wiring diagrams and be sure to perform the wiring properly without errors. ) When using the instrument with an flush mounting, the screw-down terminal type is recommended. For the pin type, use either the rear terminal block (A4) or the P cap (AD-RC) for the -pin type, and the rear terminal block (A) or the P cap (A- DP) for the -pin type. Avoid soldering directly to the round pins on the unit. When using the instrument with a front panel installation, use the DIN rail terminal block (A-DFK) for the -pin type and the DIN rail terminal block (A- DFK) for the -pin type. ) After turning the unit off, make sure that any resulting induced voltage or residual voltage is not applied to power terminals W through U (-pin type) W through P (-pin type) or and (screw terminal type). (If the power wire is wired parallel to the high voltage wire or power wire, an induced voltage may be generated between the power terminals.) 4) Have the power voltage pass through a switch or relay so that it is applied at one time. If the power is applied gradually, the counting may malfunction regardless of the settings, the power reset may not function, or other such unpredictable occurrence may result.. Input connections he power circuit has no transformer (power and input terminals are not insulated). When an input signal is fed to two or more timers at once, do not arrange the power circuit in an independent way. If the timer is powered on and off independently as shown in Fig. A, the timer's internal circuitry may get damaged.be careful never to allow such circuitry. (Figs. A, B and C show the circuitry for the -pin type.) (Fig. A) Input contact point or transistor Input terminal Input terminal Power If independent power circuitry must be used, keep the input contacts or transistors separate from each other, as shown in Fig. B. (Fig. B) Input contact point or transistor Input contact point or transistor When power circuitry is not independent, one input signal can be fed to two or more counters at once, as shown in Fig. C. (Fig. C) Input contact point or transistor. Input and output ) Signal input type () Contact point input Use highly reliable metal plated contacts. Since the contact point s bounce time leads directly to error in the timer operations, use contacts with as short a bounce time as possible. Also, select a minimum input signal width of ms. -pin type input input Screw terminal type Input terminal Input terminal input input 4 -pin type 4 Input terminal Input terminal 9 Power Power () Non-contact point input Connect with an open collector. Use transistors whose characteristics satisfy the criteria given below. VCEO = V min. IC = ma min. ICBO = µa max. Also, use transistors with a residual voltage of less than V when the transistor is on. -pin type -pin type input to 4V DC Q input Screw terminal type Screw terminal type input input 4 -pin type 4 9 * he short-circuit impedance should be less than kω. [When the impedance is Ω, the current coming from the start input and stop input terminals is approximately ma, and from the reset input and lock input terminals is approximately. ma.] Also, the open-circuit impedance should be more than kω. * As shown in the diagram below, from a non-contact point circuit (proximity switches, photoelectric switches, etc.) with a power voltage of between and 4 V, the signal can be input without using an open collector transistor. In the case of the diagram below, when the non-contact point transistor Q switches from off to on (when the signal voltage goes from high to low), the signal is input. input 4 -pin type 4 9 (he above example is for reset input) ) he input mode and output mode change depending on the DIP switch settings. herefore, before making any connections, be sure to confirm the operation mode and operation conditions currently set. ) he L4H series use power without a transformer (power and input terminals are not insulated). In connecting various kinds of input signals, therefore, use a power transformer in which the primary side is separated from the ungrounded secondary side as shown in Fig. A, for the power for a sensor and other input devices so that short-circuiting can be prevented. 4

15 PRECAUIS IN USING HE L4H SERIES Once the wiring to be used is completely installed and prior to installing this timer, confirm that there is complete insulation between the wires connected to the power terminals ( each) and the wires connected to each input terminal. If the power and input lines are not insulated, a short-circuit may occur inside the timer and result in internal damage. In addition, when moving your equipment to a new installation location, confirm that there is no difference in environmental conditions as compared to the previous location. 4) he input signal is applied by the shorting of each input terminal with the common terminal (terminal Q for -pin types, terminal E for -pin types and terminal for screw terminal types). Never connect other terminals or voltages higher than 4V DC, because it may destroy the internal circuitry. ) ransistor output () Since the transistor output is insulated from the internal circuitry by a photocoupler, it can be used as an NPN output or PNP (equal value) output. (he above example is -pin type) As NPN output As PNP output (Fig. A) Good example AC power AC power Insulation transformer L4H timer { O I Load Load s power Load imer (Fig. B) Bad example AC power imer imer L4H timer { O I Load s power Note: With the -pin type, there is no diode between points I and O. (+) ( ) Insulation transformer (+) ( ) Single coil transformer (+) ( ) ( ) ( ) ( ) Input device (e.g., sensor) Input device (e.g., sensor) Input device (e.g., sensor) Alternative current flow () Use the diode connected to the output transistor s collector for absorbing the reverse voltage from induced loads. Diode rating: IF (forward current): A VR (reverse voltage): V L4H timer Load s power Inductive load ) When wiring, use shielded wires or metallic wire tubes, and keep the wire lengths as short as possible. ) For the load of the controlled output, make sure that it is lower than the rated control capacity. 4. Operation of L4H digital timer ) urning on and off the power while operating in A* (Power on delay ) or G (otalizing On delay) will result in a timer error to be generated due to the characteristics of the internal circuitry. herefore, use the start input or stop input. * Not related to the start input. ) When controlling the timer by turning on the power, use only A (Power on delay ) or A (Power on delay ). Use of other modes in this situation will result in timer errors. When using the other modes, control the timer with the start input or stop input.. Operation mode and time range setting he operation mode and time range can be set with the DIP switches on the side of the timer. Make the DIP switch settings before installing the timer on the panel. he operation mode of L4H-W series can be set with the keys and switches on the front of the timer.. Conditions of usage ) Avoid locations subject to flammable or corrosive gases, excessive dust, oil, vibrations, or excessive shocks. ) Since the cover of the timer is made of polycarbonate resin, avoid contact with or use in environments containing methyl alcohol, benzene, thinners, and other organic solvents; and ammonia, caustic sodas, and other alkaline substances. ) If power surges exceed the values given below, the internal circuits may become damaged. Be sure to use surge absorbing element to prevent this from happening. voltage Surge voltage (peak value) AC type,v DC type 4V AC type,v Surge wave form [± (. ) µs uni-polar full wave voltage] Surge voltage (%) 9. Peak ime (µs) 4) Regarding external noise, the values below are considered the noise-resistant voltages. If voltages rise above these values, malfunctions or damage to the internal circuitry may result, so take the necessary precautions. Noise voltage Noise wave form (noise simulator) Rise time: ns Pulse width: µs, ns Polarity: ± Cycle: cycles/second ) When connecting the operating power, make sure that no leakage current enters the timer. For example, when performing contact protection, if set up like that of fig. A, leaking current will pass through C and R, enter the unit, and cause incorrect operation. he fig. B shows the correct setup. power power Leakage current R (Fig. A) (Fig. B) C Power terminals AC type DC type 4V AC type R C Input terminals,v,v V

16 PRECAUIS IN USING HE L4H SERIES ) Long periods of continuous operation in the time-up completed condition (one month or more) will result in the weakening of the internal electrical components from the generated heat and, therefore, should be avoided. If you do plan to use the unit for such continuous operation, use in conjunction with a relay as shown in the circuit in the diagram below. R R Relay R imer R Receive output from contact at relay R. Acquisition of CE marking Please abide by the conditions below when using in applications that comply with EN-. ) Overvoltage category III, pollution level ) his timer employs a power without a transformer, so the power and input signal terminals are not insulated. () When a sensor is connected to the input circuit, install double insulation on the sensor side. () In the case of contact input, use dualinsulated relays, etc. ) he load connected to the output contact should have basic insulation. his timer is protected with basic insulation and can be double-insulated to meet EN/IEC requirements by using basic insulation on the load. 4) Please use a power that is protected by an overcurrent protection device which complies with the EN/IEC standard (example: V A fuse, etc.). ) You must use a terminal socket or socket for the installation. Do not touch the terminals or other parts of the timer when it is powered. When installing or un-installing, make sure that no voltage is being applied to any of the terminals. ) Do not use this timer as a safety circuit. For example when using a timer in a heater circuit, etc., provide a protection circuit on the machine side.. Self-diagnosis function If a malfunction occurs, one of the following displays will appear. Display Contents Malfunctioning CPU. Malfunctioning memory. See note. Note: Includes the possibility that the EEPROM s life has expired. Output condition Restoration procedure Preset values after restoration Enter reset input, key, or restart unit. he values at start-up before the CPU malfunction occurred. 49

17 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Panasonic: L4HW-DC4VS L4H-AC4V L4HW-AC4V L4H-DC4V L4H-DC4VS L4H-AC4VS L4HL-DC4V