Monitoring Relays -Phase rue RMS AC/DC Over and nder Current ypes DC0, PC0 DC0 PC0 RMS AC/DC over + under, over+over, under+under current and voltage monitoring relays DC process signal plus/minus monitoring relay (DC0) Selection of measuring range by DP-switches Adjustable current and voltage on relative scale Adjustable hysteresis on relative scale Separately adjustable delay functions (0. to 30 s) Programmable latching or inhibit at set level Output: or x 8 A SPD relay N.D. or N.E. selectable For mounting on DN-rail in accordance with DN/EN 50 0 (DC0) or plug-in module (PC0) 45 mm Euronorm housing (DC0) or 36 mm plug-in module (PC0) ED indication for relay(s), alarm and power supply ON Galvanically separated power supply Product Description DC0 and PC0 are precise RMS AC/DC over+under, over+over or under+under current and voltage (selectable by DP-switch) monitoring relays. DC0 can perform also DC plus/minus measurement by short circuiting pins and Y. he devices can be connected to the M or MP and A8 or E8 current transformers. Both relays have two individual set levels with their own time delay. Only for DC0 each set level can work with a single SPD relay. Owing to the built-in latch function, the ON-position of the relay output can be maintained. nhibit function can be used to avoid relay operation when not desired (maintenance, transitions). he ED's indicate the state of the alarm and the output relays. Ordering Key Housing Function ype tem number Output Power supply Range DC 0 D B3 AV0 ype Selection Mounting Output Supply: 4 VDC Supply: 48 VDC Supply: 4/48 VAC Supply: /30 VAC DN-rail xspd DC 0 D 4 AV0 DC 0 D 48 AV0 DC 0 D B48 AV0 DC 0 D B3 AV0 Plug-in SPD PC 0 C 4 AV0 PC 0 C 48 AV0 PC 0 C B48 AV0 PC 0 C B3 AV0 nput Specifications nput Current level Voltage level DC levels (DC0 only) DC0: erminals Y, PC0: erminals 6, DC0: erminals Y, PC0: erminals 5, Connecting terminals, Y Current ranges nternal resis. Max. curr. 0.5 to 5 ma AC/DC 50 Ω 35 ma to 0 ma AC/DC 50 Ω 55 ma -5 to 5 ma DC (DC0 50 Ω 35 ma -0 to 0 ma DC } only) 50 Ω 55 ma Max. current for s 00 ma Voltage ranges nternal resis. Max. volt. 0. to V AC/DC > 0 kω V to 0 V AC/DC > 0 kω 0 V 0.4 to 4 V p AC > 0 kω 00 V - to VDC (DC0 > 0 kω V -0 to 0 VDC } only) > 0 kω 0 V Max. voltage for s 00 V C ranges AAC rms Max. curr. M and MP ranges (0.4 to 4 V p input) -ph.: 3-ph.: M 5 MP 3005 0.5 to 5 A 0 AAC M 0 MP 300 to 0 A 50 AAC M 00 MP 300 0 to 00 A 0 AAC M 500 MP 3500 50 to 500 A 50 AAC A8 ranges ( to 0 ma input) A8-0/0.5 to A 30 AAC A8-0/0 50 5 to 50 A 60 AAC A8-0/0 00 0 to 00 A 0 AAC A8-0/0 0 to 0 A 300 AAC A8-0/0 500 50 to 500 A 600 AAC E8-0 ranges ( to 0 ma input) E8-0.5 to A 50 AAC E8-0 50 5 to 50 A 00 AAC Note: he input voltage cannot raise over 300 VAC/DC with respect to ground (PC0 only) Specifications are subject to change without notice (0..0)
DC0, PC0 nput Specifications (cont.) Note: MP 3... current transformers not suitable for under current measurements due to the output signal of the device (see data sheet) Contact input DC0 erminals, Y PC0 erminals 8, 9 Disabled > 0 kω Enabled < 500 Ω atch disable > 500 ms Output Specifications Output or x SPD relays Rated insulation voltage 0 VAC Contact ratings (AgSnO ) Resistive loads AC 8 A @ 0 VAC DC 5 A @ 4 VDC Small inductive loads AC.5 A @ 0 VAC DC 3.5 A @ 4 VDC Mechanical life 30 x 0 6 operations Electrical life 0 5 operations (at 8 A, 0 V, cos ϕ = ) Operating frequency 00 operations/h Dielectric strength Dielectric voltage kvac (rms) Rated impulse withstand volt. 4 kv (./50 s) Supply Specifications Power supply Overvoltage cat. Rated operational voltage (EC 60664, EC 60038) through terminals: A, or, (DC0), 0 or, 0 (PC0) 4: 4 VDC ± 0%, insulated 48: 48 VDC ± 0%, insulated B48: 4/48 VAC ± % 45 to 65 Hz, insulated B3: /30 VAC ± % 45 to 65 Hz, insulated Dielectric voltage DC supply AC supply Supply to input kv 4 kv Supply to output 4 kv 4 kv nput to output 4 kv 4 kv Rated operational power AC 5 VA DC 3 W General Specifications Power ON delay Reaction time Alarm ON delay Alarm OFF delay Accuracy emperature drift Delay ON alarm Repeatability ndication for Power supply ON Alarm ON Output relay ON Mode of Operation DC0 and PC0 monitor both AC and DC current and voltage. DC0 can also monitor positive and negative DC voltage connecting terminals Y and. Example (no contact input - under+over voltage - x SPD N.D. relays s ± 0.5 s or 6 s ± 0.5 s (input signal variation from -0% to +0% or from +0% to -0% of set value) < 00 ms < 00 ms ( min warm-up time) ± 000 ppm/ C ± 0% on set value ± 50 ms ± 0.5% on full-scale ED, green ED, red (flashing Hz during delay time) or x ED(s), yellow ( x SPD for PC0) - RMS) DC0: One relay operates when the voltage drops below the under voltage set point for delay time. t releases when the voltage exceeds the set level plus the set hysteresis. he other relay operates when the voltage exceeds Environment (EN 6059) Degree of protection P 0 Pollution degree 3 (DC0), (PC0) Operating temperature -0 to 60 C, R.H. < 95% Storage temperature -30 to 80 C, R.H. < 95% Housing dimensions Din-rail version 45 x 80 x 99.5 mm Plug-in version 36 x 80 x 8 mm Weight Approx. 0 g Screw terminals ightening torque the over voltage set point for delay time. t releases when the voltage drops below the set level minus hysteresis. PC0: he relay operates when the voltage drops below the under voltage set level for set delay time or when it Max. 0.5 Nm acc. to EC 6094 Approvals, CSA (except 48) CE Marking Yes EMC Electromagnetic Compatibillity mmunity According to EN 6000-6- Emission According to EN 5008- exceeds the over voltage set level for more than the relative set delay time. he relay releases when the voltage exceeds the under voltage set level plus hysteresis and it drops below the over voltage set level minus hysteresis (the hysteresis is the same for both set levels). Specifications are subject to change without notice (0..0)
DC0, PC0 Mode of Operation (cont.) Example (latch active - under+under current - x SPD relays ( x SPD for PC0) - RMS) DC0: Each relay operates and latches when the current drops below the respective set level for delay time. Provided that the current has exceeded the respective set level plus hysteresis, each relay releases when the contact input s connection is interrupted. PC0: he relay operates when the current drops below the higher set level for delay time. Provided that the current has exceeded the higher set level plus hysteresis the relay releases when the contact input s connections is interrupted. Note Different delay times can be used for appropriate reaction according to the set points. Example 3 (inhibit active - over+over current with M C - DPD relay (SPD for PC0) - RMS) Provided that the contact input s connection is interrupted, the relay operates when the current flowing in the M C exceeds the lower set level for more than the respective delay time. t releases when the current drops below the lower set level minus hysteresis or when the contact input s pins are connected. (inhibit active - over+over current with A8-0 C - Function/Range/evel and ime Delay Setting Adjust the input range setting the DP switches and of the main black selector as shown below. Select the desired function setting the DP switches 3 to 6 of the black selector and, of the small red selector as shown below. o access the DP switches Set Point (SP) monitoring function ON: Over current or voltage OFF: nder current or voltage Relay(s) coupling ON: x SPD (DC0 only) OFF: x DPD (DC0, PC0) open the grey plastic cover as shown below he selection between current and voltage is automatically selected through the input connectors. RMS or positive/negative DC monitoring selectable by short-circuiting terminals Y and (DC0 only). DPD relay ( x SPD for PC0) - RMS Provided that the contact input s connection is interrupted, the relay operates when the current flowing in the A8-0 C exceeds the lower set level for more than its delay time. t releases when the current drops below the lower set level minus hysteresis or when the contact input s pins are connected. Example 5 (DC0 only) (no contact input - under+over voltage - x SPD N.D. relays - plus/minus DC One relay operates when the voltage drops below the under voltage set point for delay time. t releases when the voltage exceeds the set Selection of level, time delay and hysteresis: pper knob: Setting of hysteresis on relative scale: 0 to 30% on set value. level plus the set hysteresis. he other relay operates when the voltage exceeds the over voltage set point for delay time. t releases when the voltage drops below the set level minus hysteresis. n this case the spare front label has to be placed on the device for proper level adjustment. Note When the inhibit contact is opened, if the input signal is already in alarm position, the delay time needs to elapse before relay(s) activation. Centre knobs: Current level setting on relative scale: 0 to 0% on full scale. ower knobs: Setting of delay on alarm time on absolute scale (0. to 30 s). Measuring range (depending on connections) SW ON ON OFF Connect nput term. SW OFF ON ON None DC0: Y, 0.5 to 5 ma to 0 ma None PC0: 5, AC/DC AC/DC Y to DC0: Y, -5 to +5-0 to +0 None ma DC ma DC None DC0: Y, 0. to V 4 V p to 0 V PC0: 6, AC/DC AC/DC Y to DC0: Y, - to + None -0 to +0 V DC V DC Relay(s) working mode ON: Normally De-energized (ND) OFF: Normally Energized (NE) Power ON delay ON: 6 s ± 0.5 s OFF: s ± 0.5 s Contact input ON: atch function OFF: nhibit function Set Point (SP) monitoring function ON: Over current or voltage OFF: nder current or voltage Specifications are subject to change without notice (0..0) 3
DC0, PC0 Wiring Diagrams Example 4/48 4 VDC VDC (+) (+) Example Y A 5 6 0 Example atch/inhibit Example atch/inhibit Y A 5 6 0 Example 3 M... atch/inhibit Y Example 3 atch/inhibit A M... 5 6 0 atch/inhibit A8-0 Y Yellow Red A A8-0 Yellow Red atch/inhibit 5 6 0 Black Black Example 5 Y A DC0 PC0 4 Specifications are subject to change without notice (0..0)
DC0, PC0 Operation Diagrams Over+over voltage/current - N.D. relay(s) Over+over voltage/current - atch - N.D. relay(s) atch ON Set evel Set evel Set evel Set evel RE(DC0) RE(DC0) RE(DC0) DPD(DC0)/RE(PC0) RE(DC0) Red ED ON DPD(DC0)/RE(PC0) Red ED ON Over+under voltage/current - N.E. relay(s) Over+under voltage/current - nhibit -- N.E. N.E. relay(s) Set evel nhibit ON Set evel Set evel RE(DC0) RE(DC0) DPD(DC0)/RE(PC0) Red ED ON Set evel RE(DC0) RE(DC0) DPD(DC0)/RE(PC0) Red ED ON nder+under voltage/current - N.D. relay(s) Set evel Set evel RE(DC0) RE(DC0) DPD(DC0)/RE(PC0) Red ED ON Specifications are subject to change without notice (0..0) 5