Count - counters 5. Selection guide 5 XBK T81030U33E RC XBK RC XBK T60000U00M XBK T60000U11M XBK T80000U00M XBK T70000U00M 5/2

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1 Selection guide Count - counters Function Totalising counters Display type Mechanical LCD Font panel dimensions (h x w) in mm 0 x 0 x. 0 x 60 x Number of display digits 6 digits or 6 digits (depending on model) 6 or 6 digits (depending on model) 8 digits Maximum counting frequency Hz 0 or 0 Hz (depending on model) 0 or Hz (depending on model) 0 Hz or 7. khz 0 Hz or 7. khz Input type Contact Volt-free contact or transistor Volt-free contact, transistor or voltage level Voltage level Output type type Without Manual or without (depending on model) Manual or without Manual or transistor Manual, volt-free contact or transistor Manual or voltage level Supply voltage V V, V, V V, V Lithium battery Display capacity or (depending on model) or (depending on model) Time ranges Number of presets or partial count References XBK T60000U00M XBK T0000U M XBK T70000U00M XBK T60000UM XBK T80000U00M XBK T800UE RC RC Pages /7 /9 / /

2 Total/partial impulse counters Preselection counters Hour counters Mulltifunction: - preselection, - tachometer, - chronometer, - totalising counter, - batch counter. Mechanical LCD LCD or LED 7 x 60 x x x digits 7 digits 8 digits 6 digits or 00 Hz Hz khz or. khz if counting on inputs Volt-free contact, transistor or voltage level (depending on model) Contact (A / / A max) Contact Volt-free contact or transistor Voltage level Volt-free contact Transistor or voltage Contact (volt free) or transistors and or changeover relays Manual and volt-free contact and transistor or voltage (depending on model) Manual or Manual and electrical Without Transistor or manual with electrical interlocking facility Manual or voltage level Manual, volt-free contact or transistor Manual, electrical or automatic V V, V, Lithium battery V, V, ( for partial counting) h h h min s 0 99 h 9 min 9 s or RC RC XBK P000 0M XBK H M XBK H80000E RC RC XBK P6 0GE / / /7 /9 /9 / /

3 Presentation Count - counters Introduction Counters, associated with detection products (photo-electric detectors, inductive sensors, limit switches, etc) or dialogue products (pushbuttons, selector switches, etc) can be used to provide an additional control system function: counting. Functions Counters complement the range of display units and operator dialogue terminals by offering simple display and entry functions. They are fully compatible with detection and human-machine interface products. Technologies The range is divided into two technologies: - electromechanical, which is more suitable for slow counting applications of around 0 Hz, - electronic (LCD or LED display) which is suitable for counting frequencies of around khz. The count range covers all counting functions. There are various product families: - totalising counters, - preselection counters, - hour counters, - tachometers, - batch counters.. Totalising counters Totalising counters are used for counting events from electrical pulses or contacts. The value is displayed and updated in increments at each new pulse or contact. They are unidirectional. Applications In automatic mode The totalising counter performs this function in conjunction with a photo-electric detector, inductive sensor or limit switch, which detects the passing of a part and translates this by adding one unit to the number of parts counted by the totalising counter. In manual mode The totalising counter performs this operation in conjunction with a pushbutton. Pressing the button adds one unit to the value displayed. This system can be used with a ticket dispenser or a manual assembly station. Preselection counters Signals Stop belt Supply Limit switch Preselection counters are used for counting events from electrical pulses or contacts. The value is displayed and updated by adding or subtracting at each new pulse. They allow manual entry of a preset value. When this preset value is reached, they send an electrical signal. They can be used for upcounting or downcounting. Applications Upcounting or downcounting the number of parts. The preselection counter counts the number of parts in the same way as a totalising counter. When the selected value is reached, the preselection counter, in conjunction with various sensors, sends a signal to trigger actions such as stopping a machine or conveyor belt. /

4 Presentation (continued) Count - counters Hour counters Oven Hour counters (also called timers or chronometers) are used to count and display times in different formats and with different modes depending on the type of counter used. Applications Duration of an oven heating time, Use of a machine, n time and in hours, in order to perform maintenance. Tachometers Tachometers are used for measuring speed (linear or rotary), rates (in minutes or hours) or flow (volumetric). The tachometer receives pulses at a frequency to be measured. A scale factor allows the required values to be displayed (speeds, rates, flows, etc.) Applications Automatic control of conveyor belt speed, Flow measurement, Batch counters Batch counters are used for counting a number of parts per batch and counting a total number of batches; they send a signal each time the preset value is reached. Example OUT In B In A Stop belt OUT Supply On a packing line, 0 capsules are to be counted into containers and 0 containers placed into a carton. P : number of batches (0) P : number of capsules (0). Example: packing 0 capsules per container and grouping 0 containers in cartons. /

5 Characteristics Count - counters Electromechanical and electronic totalising counters Counter type XBK T totalising counters Display type Mechanical Electronic LCD Characteristics Function Totalising counter with mechanical display Totalising counter with LCD display Supply voltage V ± 0 % Lithium battery ± 0 % ± 0 % Consumption W/VA XBK T0000U0M and XBK T0000U08M and XBK T70000U00M:. XBK T0000UM and XBK T60000U0M and XBK T80000U00M:. XBK T60000UM:.7 XBK T60000U00M: 0. Maximum counting frequency Hz 0, 0, 0 or 700 Backup capacity Permanent 7 years Number of digits, 6, 7 or 8 8 Display capacity digits: digits: digits: digits: digits: Digit height mm 7 Counting mode Adding Adding (Input resistance: 0 Ω) type Manual or without Manual or transistor with key locking facility Inputs Function Counting Type Contact Volt-free contact or transistor: PNP V or NPN 0.7 V Amplitude V ± max Mechanical life (in millions of pulses) 0 except XBK T60000U0M and XBK T80000U00M : 00 Minimum pulse time ms at 0 Hz, 0.07 at 7. khz Environment Conforming to standards EN 008-, EN 008- EN 008-, EN 008- EN 600 Product certifications cur us except XBK T60000U00M Temperature Operation C except XBK T60000U00M: Storage C except XBK T60000U00M: Degree of protection Conforming to IEC/EN 609 IP 0 except XBK T60000U00M: IP 6 IP Vibration resistance Conforming to IEC/EN gn (0 to 0 Hz) gn (0 to 0 Hz) Shock resistance Conforming to IEC/EN gn (6 ms) 0 gn (8 ms) Protection against electric shocks Conforming to IEC/EN 606 Class II Mounting and fixing Flush-mounting Flush-mounting housing, fixed by a clamp Connection By AMP lugs on a connection box Screw terminal block References : page /7 /6 Dimensions : page /7 Schemes : page /7

6 References, dimensions, schemes Count - counters Electromechanical and electronic totalising counters 608 References XBK T0000UM 608 XBK T60000U00M Supply voltage Number of display digits Maximum counting frequency type Reference Weight V Hz kg Counters with mechanical display 0 Manual XBK T0000U0M Without XBK T60000U00M 0.00 Manual XBK T60000U0M Without XBK T70000U00M Without XBK T80000U00M XBK T60000UM XBK T70000U00M 0 Without XBK T0000U08M Manual XBK T0000UM 0.00 XBK T80000U00M Dimensions 8088 XBK T800UE 6 0 Manual XBK T60000UM 0.00 Counters with LCD display Lithium battery 8 0 or 700 Manual or transistor XBK T800UE 0.00 XBK T0000U M, XBK T70000U00M Flush-mounting XBK T60000U00M Flush-mounting e 6, 7, 8, 7 e,7, ,, XBK T60000UM XBK T80000U00M Common flush-mounting , 88 0, XBK T800UE Flush-mounting 60 = = e +0, 0 Schemes XBK T0000U M, XBK T70000U00M /+ /+ +0,6 XBK T80000U00M, XBK T60000UM + XBK T60000U0M + XBK T80000U00M e: panel thickness, mm < e <. mm XBK T800UE + PNP + NPN Count Keylock Count Keylock key locking facility Count Keylock Volt-free contact Count Keylock Characteristics : page /6 /7

7 Characteristics Count - counters Electronic totalising counters, hour counters, chronometers, x, 6 or 8 digits, LCD Counter type RC RC Technical characteristics Functions Impulse counter Hour counter/chronometer Solid state input Solid state Solid state Display 8 digit LCD 6 digit LCD Digit height mm 7 7 Counting capacity Time ranges h min s 0 99 h 9 min 9 s Time base Quartz (precision ± 0 ppm) Possibility of reloading current value Yes Supply lithium battery Life 8 years years Input characteristics Volt-free contact Start/Stop input 0 ms minimum (terminals -) input 00 ms minimum (terminals -) Prog. input (terminals -) enable input (terminals -) Slow input In.L Volt-free contact or transistor Maximum counting frequency Hz 0 max T OFF ms min T ON ms min Current output µa max Leakage current in OFF state µa 0. max Residual voltage V 0. max NPN collector Fast input Maximum counting frequency khz 7 max In.H T OFF µs 70 min T ON µs 70 min Level 0 Level V 0 Current consumption ma 6 max at V to zero : Volt-free contact or transistor NPN open collector ms minimum 00 minimum Enable reset Front panel Electromagnetic environment characteristics Radiated field Conforming to IEC Level, /M, 6 MHz to GHz Fast transients Conforming to IEC Level, kv Damped oscillatory wave Conforming to IEC - Level, kv Electrostatic discharge Conforming to IEC Level, 8 kv Operating characteristics Conforming to standards VDE 00, IEC 66,,.,., 80., 80. Product certifications culus, CSA Material Self-extinguishing Connection by screw terminals on back of the device terminals Clamping capacity mm x. Fixing By yoke Degree of protection IP 6 Temperature limits Operation C 0 + Storage C References : page /9 /8 Dimensions : page /9 Schemes : page /9

8 References, dimensions, schemes Count - counters Electronic totalising counters, hour counters, chronometers, x, 6 or 8 digits, LCD References 8 or 6 digits LCD display, digit height 7 mm Totalising counter: 7 khz and 0 Hz inputs maximum counting capacity : impulses Hour counter/chronometer: start/stop inputs time ranges: hours min s - 99 h 9 min 9 s Powered by lithium battery: reset from front panel or remote reset Totalising counters, LCD x Description Reference Weight kg Impulse counter RC Hour counter/chronometer RC RC Accessories Description Dimensions Reference Weight kg Adaptors for panel cut-out x 0 mm (dimensions 9 x mm) RC x mm (dimensions x mm) RC Ø 0 mm (dimensions Ø 7 mm) RC Dimensions RC , 7,,6,8 Panel cut-out + - 0, 0, , RC RC RC 6 6 8, Ø, Ø8, Schemes RC RC In. L En.R In. H Terminals - input - 0V - Enable - Fast counting - Slow counting 08, Fast counting input Slow counting input and reset Enable input Enable 00 ms Prog. Start/Stop Terminals - input - Enable - Common - Prog. - Start/Stop,, 08 H 08 H Start/Stop input Prog. Enable input Characteristics : page /8 /9

9 Characteristics Count - counters Electronic totalising counters, x, 8 digits, LCD Technical characteristics Function Impulse counter Display 8 digit LCD Digit height mm 7 Counting capacity Input characteristics Counter type RC Input type slow counting input Voltage Terminals - V / 0 Terminals - 6 V 0 characteristics () Front panel DIP switch n to OFF Inhibited DIP switch n to ON Enabled Voltage Terminals - V / 0 Terminals - V 0 Counting speed characteristics Counting speed (slow counting) Hz 0 Slow counting (minimum impulse duration) Low level ms High level ms Input levels V 0 Input impedance kω. min Supply characteristics alkaline batteries Life years lithium battery Life 8 years Supply can be switched off via DIP switch n located on the underside of the device General characteristics Conforming to standards VDE 00, IEC 66,,.,., 80., 80. Product certifications culus, CSA Material Self-extinguishing Connection By 6 screw terminals on back of the device Clamping capacity mm x. Mounting method By yoke Front panel degree of protection IP 66 Temperature limits Operation C -0 + Storage C Insulation resistance Conforming to IEC. MΩ 00 ( 0) Dielectric strength Conforming to IEC. 00/0 Hz/ min () The reset is galvanically isolated from the counting input. References : page / /0 Dimensions : page / Schemes : pages / and /

10 References, dimensions, schemes Count - counters Electronic totalising counters, x, 8 digits, LCD References LCD display, 8 digits, digit height 7 mm Powered by alkaline batteries or lithium battery Counting inputs : solid state ( ) or voltage (up to / ) Dimensions DIN - x mm on front panel or external with inhibit facility Totalising counters, LCD x Description Reference Weight kg Voltage input, lithium battery RC RC Accessories Description Dimensions Reference Weight kg Adaptors for x 0 mm (dimensions 9 x mm) RC panel cut-out x mm (dimensions x mm) RC Ø 0 mm (dimensions Ø 7 mm) RC Dimensions RC Panel cut-out (Max. thickness 0 mm) unit units 6,6, , , , 0 RC RC RC , 8 9 Ø, Ø8, Schemes (other schemes on page /) RC V a. 0V a/c.. 0V 0V a/c a Terminals - - reset - / - / inputs Start/stop inputs Characteristics : page /0 /

11 Characteristics, schemes Count - counters Electronic total/partial impulse counters, x, 8 digits, LCD Technical characteristics Function Impulse counter Display 8 digit LCD Digit height mm 7 Counting capacity Input characteristics Counter type RC RC Input type counting input by volt-free contact or galvanically isolated counting input NPN or PNP open-collector transistor (terminals - ) Minimum time closed ms 0 Voltage Terminals - V / 0 Terminals - 6 V 0 to zero characteristics () Front panel Partial counter always enabled External (total counter) Volt-free contact or NPN or PNP open-collector transistor (terminals - ) Minimum time closed ms 0 0 Voltage Terminals - V / 0 Terminals - V 0 Counting input characteristics Counting speed (selectable with DIP switch n ) Hz or 00 Slow counting (minimum impulse duration) Fast counting (minimum impulse duration) Low level ms High level ms Low level ms High level ms Supply characteristics lithium battery Life years Supply can be switched off via DIP switch n located on the underside of the device General characteristics Conforming to standards VDE 00, IEC 66, IEC, IEC., IEC., IEC 80., IEC 80. Product certifications culus, CSA Material Self-extinguishing Connection By 6 screw terminals on back of the device Clamping capacity mm x. Fixing By yoke Front panel degree of protection IP 66 Temperatures Operation C Storage C () The reset is galvanically isolated from the counting input. Schemes (other schemes on pages / and /) RC RC NC NC. 0V a. 0V a/c.. 0V 0V a/c a General reset inputs Counting inputs General reset inputs Counting inputs Terminals - General reset input - General reset common - Count common - Counting - Not connected 6 - Not connected Terminals - - General reset common - / - / - Count common 6-6 References : page / Dimensions : page / /

12 References, dimensions Count - counters Electronic total/partial impulse counters, x, 8 digits, LCD 608 References Partial or total count display Counting capacity : partial : total : Counting inputs and reset inputs : RC : solid state RC : voltage Decimal point Integral module for voltage inputs ( /, ) Powered by lithium battery. Life : years Front panel reset for "partial" count Front panel or electrical reset for total count Accessories for panel cut-out x 0, x, Ø 0 RC Total/partial impulse counters, LCD x Description Reference Weight kg Solid state input RC Voltage input RC Accessories Description Dimensions Reference Weight kg Adaptors for x 0 mm (dimensions 9 x mm) RC panel cut-out x mm (dimensions x mm) RC Ø 0 mm (dimensions Ø 7 mm) RC Dimensions RC Panel cut-out (Max. thickness 0mm) unit units 6,6, , , , 0 RC RC RC , 8 9 Ø, Ø8, Characteristics : page / Schemes : page / /

13 Characteristics Count - counters Electromechanical preset counters, digits Counter type Display type Characteristics Function XBK P preset counters Mechanical Preset counters Supply voltage V ± 0 % Consumption W. Maximum counting frequency Hz Number of digits Display capacity 0 to Digit height mm Number of presets Preset display Counting mode type Type of input signals Output type Adding (continuous) or subtracting (non continuous) Adding or subtracting Adding from zero or subtracting from the preset value Manual or manual and electrical Contact (A// A max) Contact (volt-free) Connection By AMP lugs on a connection box Environment Conforming to standards EN 008- and EN 008-, EN 600 Product certifications XBK PDM : CSA (pending) XBK PUM : UL/CSA (pending) Temperature Operation C Storage C Degree of protection Conforming to IEC 609 IP 0 Vibration resistance Conforming to IEC gn (0 to 0 Hz) Shock resistance Conforming to IEC gn (6 ms) Protection against electric shocks Mounting and fixing Conforming to IEC 606 Class II Removable and flush-mounting Fixing by screws on front panel References : page / / Dimensions : page / Schemes : page /

14 References, dimensions, schemes Count - counters Electromechanical preset counters, digits 6088 References Supply voltage Number Counting of display frequency digits Number of presets type Reference Weight V Hz kg Subtracting preset counters with mechanical display Manual XBK P000D0M 0.00 XBK P000D0M Manual and electrical XBK P000D0M Adding preset counters with mechanical display Manual XBK P000U0M 0.00 Manual and electrical XBK P000U0M 0.0 XBK P000U0M Dimensions XBK P000D0M XBK P000U0M Common flush-mounting , 0, 60 88, 60 0, = = Schemes XBK P000D0M, XBK P000U0M Characteristics : page / /

15 Characteristics Count - counters Electromechanical and electronic totalising timers Timer type XBK H totalising timers Display type Mechanical Electronic LCD Characteristics Function Totalising timer with mechanical display Totalising timer with LCD display Supply voltage V ± 0 % 0 Hz Lithium battery ± 0 % 0 Hz 0 ± 0 % 0 Hz Consumption VA XBK H M: 0.6 XBK H M: XBK H M: 0.08 Backup capacity Permanent 7 years Number of digits 7 8 Precision of display 0 to h 0 to h Digit height mm 7 Counting mode Adding /00 of an hour type Without Manual or transistor with key locking facility Inputs Function Enable Type Contact Transistor: PNP V or NPN 0.7 V Amplitude V ± max Environment Conforming to standards EN 008-, EN 008-, VDE 0 Product certifications UR recognized Temperature Operation C EN 008-, EN 008- EN 600 Storage C Degree of protection Conforming to IEC/EN 609 IP 6 IP Vibration resistance Conforming to IEC/EN gn (0 to 0 Hz) gn (0 to 0 Hz) Shock resistance Conforming to IEC/EN gn ( ms) 0 gn (8 ms) Protection against electric shocks Mounting and fixing Connection Conforming to IEC/EN 606 Class II Flush-mounting unit fixed by a self-locking clamp Screw terminal block References : page /7 /6 Dimensions : page /7

16 References, dimensions, schemes Count - counters Electromechanical and electronic totalising timers 608 References XBK H M Supply voltage Number of display digits Mains supply frequency type Reference Weight V Hz kg Timers with mechanical display 7 0 Without XBK H M Without XBK H M Without XBK H M XBK-H80000E Dimensions XBK H M e Supply voltage Number of display digits Display mode V Timers with LCD display Lithium battery 8 /00 of an hour Flush-mounting type Manual or transistor Reference Weight kg XBK H80000E 0.00, 6, e: panel thickness, mm < e <. mm XBK H80000E Flush-mounting e +0, 0 Schemes XBK H80000E + PNP + NPN Count Keylock Count Keylock +0,6 key locking facility Count Keylock Volt-free contact Count Keylock Characteristics : page /6 /7

17 Characteristics Count - counters Electronic hour counters, x, 6 digits, LCD Technical characteristics Function Hour counter Display 6 digit LCD Digit height mm 7 Time ranges h min s 0 99 h 9 min 9 s Time base Quartz (precision ± 0 ppm) Possibility of reloading current value Yes Input characteristics Counter type RC Input type start/stop input Voltage Terminals - V / 0 Terminals - 6 V 0-0/60 Hz Minimum impulse time ms 0 ms characteristics () Front panel DIP switch n to OFF Inhibited DIP switch n to ON Enabled Minimum impulse time ms 00 Voltage Terminals - V / 0 Terminals - V 0-0/60 Hz Supply characteristics lithium battery Life years Supply can be switched off via DIP switch n located on the underside of the device General characteristics Conforming to standards VDE 00, IEC 66,,.,., 80., 80. Product certifications culus, CSA Material Self-extinguishing Temperature limits Operation C -0 + Storage C Front panel degree of protection IP 66 Mounting method By yoke Connection By 6 screw terminals on back of the device Clamping capacity mm x. () The reset is galvanically isolated from the counting input. References : page /9 /8 Dimensions : page /9 Schemes : page /9

18 References, dimensions, schemes Count - counters Electronic hour counters, x, 6 digits, LCD 608 References Counting inputs and reset inputs : solid state or voltage Integral module for voltage inputs( or, ) time ranges : h min s - 99 h 9 min 9 s Possibility of reloading current value Powered by lithium battery. Life years on front panel or external with inhibit facility Hour counters, LCD x Description Reference Weight kg Solid state input RC ,06 Accessories Description Dimensions Reference Weight kg Adaptors for panel cut-out x 0 mm (dimensions 9 x mm) RC x mm (dimensions x mm) RC Ø 0 mm (dimensions Ø 7 mm) RC RC Dimensions RC Panel cut-out (Max. thickness 0 mm) unit units 6,6, ,6 0 0, , 0 0 RC RC RC , 8 9 Ø, Ø8, Schemes (other schemes on page /) RC V a. 0V a/c.. 0V 0V a/c a Terminals - - common - / - / - Start/stop common 6-6 A inputs B Start/stop inputs Characteristics : page /8 /9

19 Characteristics Count - counters Electronic preselection and multifunction counters, x, 6 digits, LCD or LED Counter type Preselection XBK P6 Display type LCD or LED Characteristics Functions Mulltifunction Preselection counters, tachometer, chronometer, totalising counter, batch counter. Supply voltage V or 0 ± 0 % or ± 0 % Sensor supply voltage Consumption to (0 ma max) for XBK P60GE or XBK P60GE 0 ma V, 0mA or V Maximum counting frequency Hz 000 (00 for bi-directional counting) Number of digits 6 Display capacity to Digit height mm 7.6 (LED) or 9 (LCD) Number of presets or Preset display Non continuous Counting mode programmable modes : - single counter input, - single counter with phase discriminator, - differential inputs, - summing inputs, - counting direction inputs. (Counter input resistance kω) modes : reset to zero and reset to preset value type Manual, electrical and automatic Output type Relay,changeover (response time ms) : V < Uc < V < Uc < 0 ma < I < A Transistor PNP : V, 0 ma max Minimum duration of counting pulse ms 7 at 0 Hz 0. at KHz Environment Conforming to standards EN 008- and EN 008-, EN 600 Product certifications curus Temperature Operation C Storage C Degree of protection Conforming to IEC 609 IP 6 Vibration resistance Conforming to IEC gn (0 to 0 Hz) Shock resistance Conforming to IEC gn (8 ms) Protection against electric shocks Mounting and fixing Connection Conforming to IEC 606 Class II Flush-mounting unit and fixing by a self-locking clamp with setscrews Screw terminal block References : page / /0 Dimensions : page / Schemes : page /

20 References, dimensions, schemes Count - counters Electronic preselection and multifunction counters, x, 6 digits, LCD or LED References XBK P60GE XBK P60GE Dimensions XBK P6 0GE e Supply voltage Number of display digits Counting frequency Number of presets Reference Weight V khz kg Manual, electrical and automatic reset Preselection counters with LCD display 6 XBK P60G0E 0.0 XBK P60G0E XBK P60GE XBK P60GE XBK P60GE 0.0 XBK P60GE 0.0 Preselection counters with LED display 6 XBK P60G0E 0.0 XBK P60G0E XBK P60GE 0.0 XBK P60GE 0.0 Flush-mounting 9, 0,7 Schemes XBK P6 0GE c V + c V c V + -wire sensor types XS, XU R = kω XBK P60GE default configuration (PNP) -wire sensor types XS, XU Load XBK P60GE default configuration (PNP) a a V -wire sensor types XS, XU 0 to 0 R = kω Power supply XBK P60GE or GE default configuration (PNP) c V + a a a V a -wire sensor types XS, XU Common (NO) or (NC) 0 XBK P60GE or GE default configuration (PNP) -wire sensor or photocell relay or limit switch or pushbutton A A Control relay type CA 7 XBK P60GE default configuration (PNP) 6 Characteristics : page /0 /

21 Schemes Count - counters Counters x Connection schemes RC Description Fast counting input Counting and general reset input Voltage - + Volt-free contact NPN transistor or -wire NPN proximity sensor () + NPN - PNP transistor or -wire PNP proximity sensor () -wire proximity sensor - R() - R() () For sensor with leakage current 0. ma. () R = 70 Ω / Ω for a -wire sensor with leakage current. ma. References : page / /

22 Schemes (continued) Count - counters Counters x Connection schemes (continued) RC , RC , RC Description Counting input RC , RC Start/Stop input RC RC , RC , RC Voltage -~/ - ~ 6 -~ -~/ Live contact -~/= -~ 6 -~ -~/ NPN transistor or -wire NPN proximity sensor () PNP PNP PNP transistor or -wire PNP proximity sensor () NPN + NPN -wire proximity sensor max max R() R() maxi maxi R() R() () For sensor with leakage current 0. ma. () R = 70 Ω / Ω for a -wire sensor with leakage current. ma. References : pages / to /9 /