Data sheet Voltage monitoring relay CM-EFS.2 For single-phase AC/DC voltages The CM-EFS.2 is an electronic voltage monitoring relay that provides reliable monitoring of voltages as well as detection of phase loss. Characteristics –– Monitoring of DC and AC voltages (3-600 V) –– TRMS measuring principle –– One device includes 4 measuring ranges –– Over- and undervoltage monitoring –– ON- or OFF-delay configurable –– Latching function configurable –– Threshold values for >U and <U adjustable –– Fixed hysteresis (5 %) –– Precise adjustment by front-face operating controls –– Screw connection technology or Easy Connect Technology available –– Housing material for highest fire protection classification UL 94 V-0 –– Tool-free mounting on DIN rail as well as demounting –– Tripping delay TV adjustable (0 s; 0.1-30 s) –– 1x2 c/o (SPDT) contacts (common signal) or 2x1 c/o (SPDT) contact (separate signals for >U and <U) configurable –– 22.5 mm (0.89 in) width –– 3 LEDs for status indication 2CDC 251 059 V0011 All devices are available with two different terminal versions. You can choose between the proven screw connection technology (double-chamber cage connection terminals) and the completely tool-free Easy Connect Technology (Push-in terminals). Approvals A UL 508, CAN/CSA C22.2 No.14 C GL D GOST K CB Scheme E CCC L RMRS (pending) Marks a CE b C-Tick Order data Voltage monitoring relay Type Rated control supply voltage Connection technology Measuring ranges Order code CM-EFS.2P 24-240 V AC/DC Push-in terminals 3-30 V, 6-60 V, 30-300 V, 60-600 V 1SVR 740 750 R0400 CM-EFS.2S 24-240 V AC/DC Screw type terminals 3-30 V, 6-60 V, 30-300 V, 60-600 V 1SVR 730 750 R0400 Accessories Type Description Order code ADP.01 Adapter for screw mounting 1SVR 430 029 R0100 MAR.12 Marker label for devices with DIP switches 1SVR 730 006 R0000 COV.11 Sealable transparent cover 1SVR 730 005 R0100 Connection technology Type designation CM-xxS.yyP Type designation CM-xxS.yyS 2CDC 253 025 F0011 Approved screw connection technology with double-chamber cage connection terminals 2CDC 253 026 F0011 Maintenance free Easy Connect Technology with Push-in terminals Push-in terminals Double-chamber cage connection terminals –– Tool-free connection of rigid and flexible wires with wire end ferrule according to DIN 46228-1-A, DIN 46228-4-E Wire size: 2 x 0.5-1.5 mm², (2 x 20 - 16 AWG) –– Easy connection of flexible wires without wire end ferrule by opening the terminals –– No retightening necessary –– One operation lever for opening both connection terminals –– For triggering the lever and disconnecting of wires you can use the same tool (Screwdriver according to DIN ISO 2380-1 Form A 0.8 x 4 mm (0.0315 x 0.157 in), DIN ISO 8764-1 PZ1 ø 4.5 mm (0.177 in)) –– Constant spring force on terminal point independent of the applied wire type, wire size or ambient conditions (e. g. vibrations or temperature changes) –– Opening for testing the electrical contacting –– Gas-tight –– Terminal spaces for different wire sizes: fine‑strand with/without wire end ferrule: 1 x 0.5-2.5 mm² (2 x 20 - 14 AWG), 2 x 0.5-1.5 mm² (2 x 20 - 16 AWG) rigid: 1 x 0.5-4 mm² (1 x 20 - 12 AWG), 2 x 0.5-2.5 mm² (2 x 20 - 14 AWG) –– One screw for opening and closing of both cages –– Pozidrive screws for pan- or crosshead screwdrivers according to DIN ISO 2380-1 Form A 0.8 x 4 mm (0.0315 x 0.157 in), DIN ISO 8764-1 PZ1 ø 4.5 mm (0.177 in) Both the Easy Connect Technology with Push-in terminals and screw connection technology with double-chamber cage connection terminals have the same connection geometry as well as terminal position. 2 - Voltage monitoring relay CM-EFS.2 | Data sheet Functions Operating controls 1 Adjustment of the threshold value >U for overvoltage 2 Adjustment of the threshold value <U for undervoltage 3 Indication of operational states U/T: green LED – control supply voltage/timing R: yellow LED – relay status 1 U: red LED – over- / undervoltage 2CDC 251 059 V0011 2 4 Adjustment of the measuring range 3 5 Adjustment of the tripping delay TV 6 DIP switches (see DIP switch functions) 4 5 6 ! When compared with our previous version, the position of the adjustment potentiometers 4 and 5 have changed places. Application The voltage monitoring relays CM-EFS.2 are designed for use in single-phase AC and/or DC systems for the simultaneous monitoring of over- or undervoltages as well as detection of phase loss. Depending on the configuration, one c/o (SPDT) contact each or both c/o (SPDT) contacts in parallel can be used for the over- and undervoltage monitoring. The devices operate over an universal range of supply voltages and provide an adjustable tripping delay. Open or closed-circuit principle as well as ON of OFF delay tripping are configurable. Operating mode The CM-EFS.2 have 2 c/o (SPDT) contacts and include 4 measuring ranges: 3-30 V, 6-60 V, 30-300 V and 60-600 V. The units are adjusted with front-face operating controls. The selection of: ON-delay A or OFF-delay B, open- h or closed-circuit principle g, latching function ON f or OFF e and 2x1 c/o i or 1x2 c/o (SPDT) contacts j is made with DIP switches. Potentiometers, with direct reading scale, allow the adjustment of the threshold valuemax (>U) for overvoltage, the threshold valuemin (<U) for undervoltage and the tripping delay TV . The tripping delay TV is adjustable over a range of instantaneous to a 30 s delay. The hysteresis is fixed at 5 %. Timing is displayed by a flashing green LED labelled U/T. Data sheet | Voltage monitoring relay CM-EFS.2 - 3 Function diagrams Voltage window monitoring 1x2 c/o (SPDT) contacts Open-circuit principle j ON-delayed A without latching e h The voltage to be monitored (measured value) is applied to terminals B-C. The control supply voltage applied to terminals A1-A2 is displayed by the glowing green LED. If the measured value exceeds the threshold valuemax (>U) or drops below the threshold valuemin (<U), the tripping delay TV starts and the red LED glows (overvoltage), or flashes W (undervoltage) respectively. Timing of TV is displayed by the flashing W green LED. When TV is complete and the measured value still exceeds the threshold valuemax minus the fixed hysteresis (5 %) or is still below the threshold valuemin plus the fixed hysteresis (5 %), the output relays energize and the yellow LED (relay energized) glows. If the measured value decreases below the threshold valuemax minus the fixed hysteresis (5 %) or exceeds the threshold valuemin plus the fixed hysteresis (5 %), the output relays de-energize and the red and yellow LEDs turn off. If control supply voltage is interrupted, the green LED turns off. Closed-circuit principle g The voltage to be monitored (measured value) is applied to terminals B-C. When control supply voltage is applied to terminals A1-A2, the output relays energize and the green and yellow LED (relays energized) glow. If the measured value exceeds the threshold valuemax (>U) or drops below the threshold valuemin (<U), the tripping delay TV starts and the red LED glows (overvoltage), or flashes W (undervoltage) respectively. Timing of TV is displayed by the flashing W green LED. When TV is complete and the measured value still exceeds the threshold valuemax minus the fixed hysteresis (5 %) or is still below the threshold valuemin plus the fixed hysteresis (5 %), the output relays de-energize and the yellow LED (relays energized) turns off. If the measured value decreases below the threshold valuemax minus the fixed hysteresis (5 %) or exceeds the threshold valuemin plus the fixed hysteresis (5 %), the output relays re-energize, the yellow LED glows and the red LED turns off. If control supply voltage is interrupted, the output relays de-energize and the yellow and green LEDs turn off. A1-A2 Thresholdmax Hysteresis Measured value Hysteresis Thresholdmin Open-circuit principle < TV TV < TV open 11-14 (15-18) 11-12 (15-16) 21-24 (25-28) 21-22 (25-26) green LED red LED yellow LED Closed-circuit principle closed 21-24 (25-28) 21-22 (25-26) green LED red LED yellow LED 4 - Voltage monitoring relay CM-EFS.2 | Data sheet 2CDC 252 232 F0205 11-14 (15-18) 11-12 (15-16) Voltage window monitoring 1x2 c/o (SPDT) contacts Open-circuit principle j OFF-delayed B without latching e h The voltage to be monitored (measured value) is applied to terminals B-C. The control supply voltage applied to terminals A1-A2 is displayed by the glowing green LED. If the measured value exceeds the threshold valuemax (>U) or drops below the threshold valuemin (<U), the output relays energize, the yellow LED (relays energized) glows and the red LED glows (overvoltage), or flashes W (undervoltage) respectively. If the measured value decreases below the threshold valuemax minus the fixed hysteresis (5 %) or exceeds the threshold valuemin plus the fixed hysteresis (5 %), the tripping delay TV starts and the red LED turns off. Timing of TV is displayed by the flashing yellow LED (relay energized) turns off. W green LED. When TV is complete, the output relays de-energize and the If control supply voltage is interrupted, the green LED turns off. Closed-circuit principle g The voltage to be monitored (measured value) is applied to terminals B-C. When control supply voltage is applied to terminals A1-A2, the output relays energize and the green and yellow LED (relays energized) glow. If the measured value exceeds the threshold valuemax (>U) or drops below the threshold valuemin (<U), the output relays deenergize, the yellow LED turns off and the red LED glows (overvoltage), or flashes W (undervoltage) respectively. If the measured value decreases below the threshold valuemax minus the fixed hysteresis (5 %) or exceeds the threshold valuemin plus the fixed hysteresis (5 %), the tripping delay TV starts and the red LED turns off. Timing of TV is displayed by the flashing yellow LED (relay energized) glows. W green LED. When TV is complete, the output relays energize and the If control supply voltage is interrupted, the output relays de-energize and the yellow and green LEDs turn off. A1-A2 Thresholdmax Hysteresis Measured value Hysteresis Thresholdmin Open-circuit principle TV TV open 11-14 (15-18) 11-12 (15-16) 21-24 (25-28) 21-22 (25-26) green LED red LED yellow LED Closed-circuit principle closed 21-24 (25-28) 21-22 (25-26) green LED red LED yellow LED 2CDC 252 233 F0205 11-14 (15-18) 11-12 (15-16) Data sheet | Voltage monitoring relay CM-EFS.2 - 5 Voltage window monitoring 1x2 c/o (SPDT) contacts Open-circuit principle j ON-delayed A with latching f h The voltage to be monitored (measured value) is applied to terminals B-C. The control supply voltage applied to terminals A1-A2 is displayed by the glowing green LED. If the measured value exceeds the threshold valuemax (>U) or drops below the threshold valuemin (<U), the tripping delay TV starts and the red LED glows (overvoltage), or flashes W (undervoltage) respectively. Timing of TV is displayed by the flashing W green LED. When TV is complete and the measured value still exceeds the threshold valuemax minus the fixed hysteresis (5 %) or is still below the threshold valuemin plus the fixed hysteresis (5 %), the output relays energize and the yellow LED (relay energized) flashes Z . If the measured value decreases below the threshold valuemax minus the fixed hysteresis (5 %) or exceeds the threshold valuemin plus the fixed hysteresis (5 %), the red LED turns off. The output relays remain energized (latching function). If control supply voltage is interrupted (reset), the output relays de-energize and the yellow and green LEDs turn off. Closed-circuit principle g The voltage to be monitored (measured value) is applied to terminals B-C. When control supply voltage is applied to terminals A1-A2, the output relays energize and the green and yellow LED (relays energized) glow. If the measured value exceeds the threshold valuemax (>U) or drops below the threshold valuemin (<U), the tripping delay TV starts and the red LED glows (overvoltage), or flashes W (undervoltage) respectively. Timing of TV is displayed by the flashing W green LED. When TV is complete and the measured value still exceeds the threshold valuemax minus the fixed hysteresis (5 %) or is still below the threshold valuemin plus the fixed hysteresis (5 %), the output relays de-energize and the yellow LED (relays energized) flashes Y . If the measured value decreases below the threshold valuemax minus the fixed hysteresis (5 %) or exceeds the threshold valuemin plus the fixed hysteresis (5 %), the red LED turns off. The output relays remain de-energized (latching function). If control supply voltage is interrupted (reset), the yellow and green LEDs turn off. The output relays energize again when control supply voltage is re-applied. A1-A2 Reset Thresholdmax Hysteresis Measured value Hysteresis Thresholdmin Open-circuit principle < TV TV < TV open 11-14 (15-18) 11-12 (15-16) 21-24 (25-28) 21-22 (25-26) green LED red LED yellow LED Closed-circuit principle closed 21-24 (25-28) 21-22 (25-26) green LED red LED yellow LED 6 - Voltage monitoring relay CM-EFS.2 | Data sheet 2CDC 252 234 F0205 11-14 (15-18) 11-12 (15-16) Voltage window monitoring 1x2 c/o (SPDT) contacts Open-circuit principle j OFF-delayed B with latching f h The voltage to be monitored (measured value) is applied to terminals B-C. The control supply voltage applied to terminals A1-A2 is displayed by the glowing green LED. If the measured value exceeds the threshold valuemax (>U) or drops below the threshold valuemin (<U), the output relays energize, the yellow LED (relays energized) flashes Z and the red LED glows (overvoltage), or flashes W (undervoltage) respectively. If the measured value decreases below the threshold valuemax minus the fixed hysteresis (5 %) or exceeds the threshold valuemin plus the fixed hysteresis (5 %), the red LED turns off. The output relays remain energized (latching function). If control supply voltage is interrupted (reset), the output relays de-energize and the yellow and green LEDs turn off. Closed-circuit principle g The voltage to be monitored (measured value) is applied to terminals B-C. When control supply voltage is applied to terminals A1-A2, the output relays energize and the green and yellow LED (relays energized) glow. If the measured value exceeds the threshold valuemax (>U) or drops below the threshold valuemin (<U), the output relays de-energize, the yellow LED (relays energized) flashes Y and the red LED glows (overvoltage), or flashes W (undervoltage) respectively. If the measured value decreases below the threshold valuemax minus the fixed hysteresis (5 %) or exceeds the threshold valuemin plus the fixed hysteresis (5 %), the red LED turns off. The output relays remain de-energized (latching function). If control supply voltage is interrupted (reset), the yellow and green LEDs turn off. The output relays energize again when control supply voltage is re-applied. A1-A2 Thresholdmax Hysteresis Reset Measured value Hysteresis Thresholdmin Open-circuit principle open 11-14 (15-18) 11-12 (15-16) 21-24 (25-28) 21-22 (25-26) green LED red LED yellow LED Closed-circuit principle closed 21-24 (25-28) 21-22 (25-26) green LED red LED yellow LED 2CDC 252 235 F0205 11-14 (15-18) 11-12 (15-16) Data sheet | Voltage monitoring relay CM-EFS.2 - 7 Voltage window monitoring 2x1 c/o (SPDT) contact Open-circuit principle i ON-delayed A without latching e h The voltage to be monitored (measured value) is applied to terminals B-C. The control supply voltage applied to terminals A1-A2 is displayed by the glowing green LED. If the measured value exceeds the threshold valuemax (>U) or drops below the threshold valuemin (<U), the tripping delay TV starts and the red LED glows (overvoltage), or flashes W (undervoltage) respectively. Timing of TV is displayed by the flashing W green LED. When TV is complete and the measured value still exceeds the threshold valuemax minus the fixed hysteresis (5 %) or is still below the threshold valuemin plus the fixed hysteresis (5 %), the output relay 1115-1216/1418 (>U), or 2125-2226/2428 (<U) respectively, energizes and the yellow LED (relay energized) glows. If the measured value decreases below the threshold valuemax minus the fixed hysteresis (5 %) or exceeds the threshold valuemin plus the fixed hysteresis (5 %), the output relay 1115-1216/1418 (>U), or 2125-2226/2428 (<U) respectively, deenergizes and the red and yellow LEDs turn off. If control supply voltage is interrupted, the green LED turns off. Closed-circuit principle g The voltage to be monitored (measured value) is applied to terminals B-C. When control supply voltage is applied to terminals A1-A2, the output relays energize and the green and yellow LED (relays energized) glow. If the measured value exceeds the threshold valuemax (>U) or drops below the threshold valuemin (<U), the tripping delay TV starts and the red LED glows (overvoltage), or flashes W (undervoltage) respectively. Timing of TV is displayed by the flashing W green LED. When TV is complete and the measured value still exceeds the threshold valuemax minus the fixed hysteresis (5 %) or is still below the threshold valuemin plus the fixed hysteresis (5 %), the output relay 1115-1216/1418 (>U), or 2125-2226/2428 (<U) respectively, de-energizes and the yellow LED (relays energized) turns off. If the measured value decreases below the threshold valuemax minus the fixed hysteresis (5 %) or exceeds the threshold valuemin plus the fixed hysteresis (5 %), the output relay 1115-1216/1418 (>U), or 2125-2226/2428 (<U) respectively, reenergizes, the yellow LED glows and the red LED turns off. If control supply voltage is interrupted, the output relays de-energize and the yellow and green LEDs turn off. A1-A2 Thresholdmax Hysteresis Measured value Hysteresis Thresholdmin Open-circuit principle < TV TV < TV TV open >U: 11-14 (15-18) 11-12 (15-16) <U: 21-24 (25-28) 21-22 (25-26) green LED red LED yellow LED Closed-circuit principle closed <U: 21-24 (25-28) 21-22 (25-26) green LED red LED yellow LED 8 - Voltage monitoring relay CM-EFS.2 | Data sheet 2CDC 252 236 F0205 >U: 11-14 (15-18) 11-12 (15-16) Voltage window monitoring 2x1 c/o (SPDT) contact Open-circuit principle i OFF-delayed B without latching e h The voltage to be monitored (measured value) is applied to terminals B-C. The control supply voltage applied to terminals A1-A2 is displayed by the glowing green LED. If the measured value exceeds the threshold valuemax (>U) or drops below the threshold valuemin (<U), the output relay 11 15-1216/1418 (>U), or 2125-22 26/2428 (<U) respectively, energizes, the yellow LED (relays energized) glows and the red LED glows (overvoltage), or flashes W (undervoltage) respectively. If the measured value decreases below the threshold valuemax minus the fixed hysteresis (5 %) or exceeds the threshold valuemin plus the fixed hysteresis (5 %), the tripping delay TV starts and the red LED turns off. Timing of TV is displayed by the flashing W green LED. When TV is complete, the output relay 1115-1216/1418 (>U), or 2125-2226/2428 (<U) respectively, de-energizes and the yellow LED (relay energized) turns off. If control supply voltage is interrupted, the green LED turns off. Closed-circuit principle g The voltage to be monitored (measured value) is applied to terminals B-C. When control supply voltage is applied to terminals A1-A2, the output relays energize and the green and yellow LED (relays energized) glow. If the measured value exceeds the threshold valuemax (>U) or drops below the threshold valuemin (<U), the output relay 1115-1216/1418 (>U), or 2125-22 26/2428 (<U) respectively, de-energizes, the yellow LED turns off and the red LED glows (overvoltage), or flashes W (undervoltage) respectively. If the measured value decreases below the threshold valuemax minus the fixed hysteresis (5 %) or exceeds the threshold valuemin plus the fixed hysteresis (5 %), the tripping delay TV starts and the red LED turns off. Timing of TV is displayed by the flashing W green LED. When TV is complete, the output relay 1115-1216/1418 (>U), or 2125-2226/2428 (<U) respectively, energizes and the yellow LED (relay energized) glows. If control supply voltage is interrupted, the output relays de-energize and the yellow and green LEDs turn off. A1-A2 Thresholdmax Hysteresis Measured value Hysteresis Thresholdmin Open-circuit principle TV TV open >U: 11-14 (15-18) 11-12 (15-16) <U: 21-24 (25-28) 21-22 (25-26) green LED red LED yellow LED Closed-circuit principle closed <U: 21-24 (25-28) 21-22 (25-26) green LED red LED yellow LED 2CDC 252 237 F0205 >U: 11-14 (15-18) 11-12 (15-16) Data sheet | Voltage monitoring relay CM-EFS.2 - 9 Voltage window monitoring 2x1 c/o (SPDT) contact Open-circuit principle i ON-delayed A with latching f h The voltage to be monitored (measured value) is applied to terminals B-C. The control supply voltage applied to terminals A1-A2 is displayed by the glowing green LED. If the measured value exceeds the threshold valuemax (>U) or drops below the threshold valuemin (<U), the tripping delay TV starts and the red LED glows (overvoltage), or flashes W (undervoltage) respectively. Timing of TV is displayed by the flashing W green LED. When TV is complete and the measured value still exceeds the threshold valuemax minus the fixed hysteresis (5 %) or is still below the threshold valuemin plus the fixed hysteresis (5 %), the output relay 1115-1216/1418 (>U), or 2125-2226/2428 (<U) respectively, energizes and the yellow LED (relay energized) flashes Z . If the measured value decreases below the threshold valuemax minus the fixed hysteresis (5 %) or exceeds the threshold valuemin plus the fixed hysteresis (5 %), the red LED turns off. The output relay 1115-1216/1418 (>U), or 2125-2226/2428 (<U) respectively, remains energized (latching function). If control supply voltage is interrupted (reset), the output relay 1115-1216/1418 (>U), or 2125-2226/2428 (<U) respectively, deenergizes and the yellow and green LEDs turn off. Closed-circuit principle g The voltage to be monitored (measured value) is applied to terminals B-C. When control supply voltage is applied to terminals A1-A2, the output relays energize and the green and yellow LED (relays energized) glow. If the measured value exceeds the threshold valuemax (>U) or drops below the threshold valuemin (<U), the tripping delay TV starts and the red LED glows (overvoltage), or flashes W (undervoltage) respectively. Timing of TV is displayed by the flashing W green LED. When TV is complete and the measured value still exceeds the threshold valuemax minus the fixed hysteresis (5 %) or is still below the threshold valuemin plus the fixed hysteresis (5 %), the output relay 1115-1216/1418 (>U), or 2125-2226/2428 (<U) respectively, de-energizes and the yellow LED (relays energized) flashes Y . If the measured value decreases below the threshold valuemax minus the fixed hysteresis (5 %) or exceeds the threshold valuemin plus the fixed hysteresis (5 %), the red LED turns off. The output relay 1115-1216/1418 (>U), or 2125-2226/2428 (<U) respectively, remains de-energized (latching function). If control supply voltage is interrupted (reset), the yellow and green LEDs turn off. The output relays energize again when control supply voltage is re-applied. A1-A2 Reset Thresholdmax Hysteresis Measured value Hysteresis Thresholdmin Open-circuit principle < TV < TV TV TV open >U: 11-14 (15-18) 11-12 (15-16) <U: 21-24 (25-28) 21-22 (25-26) green LED red LED yellow LED Closed-circuit principle closed <U: 21-24 (25-28) 21-22 (25-26) green LED red LED yellow LED 10 - Voltage monitoring relay CM-EFS.2 | Data sheet 2CDC 252 238 F0205 >U: 11-14 (15-18) 11-12 (15-16) Voltage window monitoring 2x1 c/o (SPDT) contact Open-circuit principle i OFF-delayed B with latching f h The voltage to be monitored (measured value) is applied to terminals B-C. The control supply voltage applied to terminals A1-A2 is displayed by the glowing green LED. If the measured value exceeds the threshold valuemax (>U) or drops below the threshold valuemin (<U), the output relay 111512 16/1418 (>U), or 21 25-22 26/2428 (<U) respectively, energizes, the yellow LED (relays energized) flashes Z and the red LED glows (overvoltage), or flashes W (undervoltage) respectively. If the measured value decreases below the threshold valuemax minus the fixed hysteresis (5 %) or exceeds the threshold valuemin plus the fixed hysteresis (5 %), the red LED turns off. The output relay 1115-1216/1418 (>U), or 2125-2226/2428 (<U) respectively, remains energized (latching function). If control supply voltage is interrupted (reset), the output relays de-energize and the yellow and green LEDs turn off. Closed-circuit principle g The voltage to be monitored (measured value) is applied to terminals B-C. When control supply voltage is applied to terminals A1-A2, the output relays energize and the green and yellow LED (relays energized) glow. If the measured value exceeds the threshold valuemax (>U) or drops below the threshold valuemin (<U), the output relay 111512 16/1418 (>U), or 2125-22 26/2428 (<U) respectively, de-energizes, the yellow LED (relays energized) flashes Y and the red LED glows (overvoltage), or flashes W (undervoltage) respectively. If the measured value decreases below the threshold valuemax minus the fixed hysteresis (5 %) or exceeds the threshold valuemin plus the fixed hysteresis (5 %), the red LED turns off. The output relay 1115-1216/1418 (>U), or 2125-2226/2428 (<U) respectively, remains de-energized (latching function). If control supply voltage is interrupted (reset), the yellow and green LEDs turn off. The output relays energize again when control supply voltage is re-applied. A1-A2 Thresholdmax Hysteresis Reset Measured value Hysteresis Thresholdmin Open-circuit principle open >U: 11-14 (15-18) 11-12 (15-16) <U: 21-24 (25-28) 21-22 (25-26) green LED red LED yellow LED Closed-circuit principle closed <U: 21-24 (25-28) 21-22 (25-26) green LED red LED yellow LED 2CDC 252 239 F0205 >U: 11-14 (15-18) 11-12 (15-16) Data sheet | Voltage monitoring relay CM-EFS.2 - 11 Electrical connection A1 B 1115 B 2125 1115 A1-A2 Rated control supply voltage B-C Measuring ranges: 3-30 V, 6-60 V, 30-300 V, 60-600 V 1115-1216/1418 Output contacts - open- or closed-circuit principle 2125 2125-2226/2428 A1 A2 1216 1418 2226 2428 1418 2428 1216 2226 C A2 2CDC 252 207 F0005 C Connection diagram Position 4 ON 2x1 c/o OFF 1x2 c/o 3 2 1 closed open 2CDC 252 274 F0005 DIP switches 1ON OFF-delay OFFON-delay 2 ON Closed-circuit principle Open-circuit principle OFF 3 ON Latching function activated Latching function not activated OFF 4 ON 2x1 c/o (SPDT) contact 1x2 c/o (SPDT) contacts OFF OFF = Default 12 - Voltage monitoring relay CM-EFS.2 | Data sheet Technical data Data at Ta = 25 °C and rated values, unless otherwise indicated Input circuits Supply circuit A1-A2 Rated control supply voltage Us 24-240 V AC Rated control supply voltage Us tolerance -15...+10 % Rated frequency 50/60 Hz Typical current / power consumption 24 V DC 30 mA / 0.75 W 115 V AC 17 mA / 1.9 VA 230 V AC 11 mA / 2.6 VA Power failure buffering time 20 ms Transient overvoltage protection varistors Measuring circuit B-C Monitoring function Over- and undervoltage monitoring Measuring method TRMS measuring principle Measuring inputs terminal connection measuring range input resistance B-C 3-30 V, 6-60 V, 30-300 V, 60-600 V 600 kΩ pulse overload capacity t < 1 s 800 V continuous capacity 660 V Threshold value >U and <U adjustable within the indicated measuring range Tolerance of the adjusted threshold value 10 % of the range end value Hysteresis related to the threshold value 5 % fixed Measuring signal frequency range DC / 15 Hz - 2 kHz Rated measuring signal frequency range DC / 50-60 Hz Maximum response time AC 80 ms DC 120 ms Accuracy within the rated control supply voltage tolerance ΔU ≤ 0.5 % Accuracy within the temperature range ΔU ≤ 0.06 % / °C Transient overvoltage protection varistors Timing circuit Time delay TV 0 s or 0.1-30 s adjustable Repeat accuracy (constant parameters) ±0.07 % of full scale Tolerance of the adjusted time delay - Accuracy within the rated control supply voltage tolerance Δt ≤ 0.5 % Accuracy within temperature range Δt ≤ 0.06 % / °C User interface Indication of operational states Control supply voltage Measured value Relay status U/T: green LED U: red LED R: yellow LED V: control supply voltage applied W: tripping delay TV active V: overvoltage W: undervoltage V: output relay energized, no latching function Z: output relay energized, active latching function Y: output relay de-energized, active latching function Data sheet | Voltage monitoring relay CM-EFS.2 - 13 Output circuits Kind of output 11-12/14 relay, 1st c/o (SPDT) contact 21-22/24 relay, 2nd c/o (SPDT) contact 1 x 2 c/o (SPDT) contacts (common signal) or 2 x 1 c/o (SPDT) contact (separate signal for >U and <U) configurable Operating principle open- or closed-circuit principle configurable (opencircuit principle: output relays energize if the measured value exceeds d / falls below c the adjusted threshold value, closed-circuit principle: output relays d / falls c the adjusted threshold value) de-energize if measured value exceeds below Contact material AgNi Rated operational voltage Ue (VDE 0110, IEC/EN 60947-1) 250 V Minimum switching voltage / Minimum switching current 24 V / 10 mA Maximum switching voltage / Maximum switching current Rated operational current Ie (IEC/EN 60947-5-1) AC rating (UL 508) 250 V AC / 4 A AC AC12 (resistive) at 230 V 4A AC15 (inductive) at 230 V 3A DC12 (resistive) at 24 V 4A DC13 (inductive) at 24 V 2A utilization category (Control Circuit Rating Code) max. rated operational voltage max. continuous thermal current at B 300 max. making/breaking B 300 300 V AC 5A 3600/360 VA apparent power at B 300 Mechanical lifetime Electrical lifetime 30 x 106 switching cycles AC12, 230 V, 4 A 0.1 x 106 switching cycles Maximum fuse rating to achieve n/c contact 6 A fast-acting short-circuit protection n/o contact 10 A fast-acting General data MTBF on request Duty time 100 % Dimensions (W x H x D) product dimensions packaging dimensions Weight 22.5 x 85.6 x 103.7 mm (0.89 x 3.37 x 4.08 in) 97 x 109 x 30 mm (3.82 x 4.29 x 1.18 in) Screw connection Easy Connect Technology technology (Push-in) Net weight 0.157 kg (0.346 lb) 0.146 kg (0.322 lb) Gross weight 0.179 kg (0.395 lb) 0.168 kg (0.370 lb) Mounting DIN rail (IEC/EN 60715), snap-on mounting without any tool Mounting position any Material of housing UL 94 V-0 Degree of protection 14 - Voltage monitoring relay CM-EFS.2 | Data sheet housing IP50 terminals IP20 Electrical connection Wire size Screw connection technology Easy Connect Technology (Push-in) fine‑strand with(out) 1 x 0.5-2.5 mm² 2 x 0.5-1.5 mm² wire end ferrule (1 x 20-14 AWG) (2 x 20-16 AWG) 2 x 0.5-1.5 mm² (2 x 20-16 AWG) rigid 1 x 0.5-4 mm² 2 x 0.5-1.5 mm² (1 x 20-12 AWG) (2 x 20-16 AWG) 2 x 0.5-2.5 mm² (2 x 20-14 AWG) Stripping length 8 mm (0.32 in) Tightening torque 0.6 - 0.8 Nm - (5.31 - 7.08 lb.in) Environmental data Ambient temperature ranges operation -20...+60 °C storage -40...+85 °C Damp heat, cyclic (IEC 60068-2-30) 55 °C, 6 cycle Vibration, sinusoidal (IEC/EN 60255-21-1) class 2 Shock (IEC/EN 60255-21-2) class 2 Isolation data Rated insulation voltage Ui (VDE 0110, IEC/EN 60947-1, IEC/EN 60255-5) Rated impulse withstand voltage Uimp (IEC/EN 60947-1, IEC/EN 60255-5) supply / measuring circuit / output 600 V supply / output 1 / output 2 250 V supply / measuring circuit / output 6 kV 1.2/50 μs supply / output 1 / output 2 4 kV 1.2/50 μs Test voltage between all isolated circuits rated insulation voltage 250 V 2.0 kV, 50 Hz (type test) rated insulation voltage 600 V 2.5 kV, 50 Hz Pollution degree (VDE 0110, IEC/EN 60664, IEC/EN 60255-5) 3 Overvoltage category (VDE 0110, IEC/EN 60664, IEC/EN 60255-5) III Standards Product standard IEC/EN 60255-6 Low Voltage Directive 2006/95/EC EMC Directive 2004/108/EC RoHS Directive 2002/95/EC Electromagnetic compatibility Interference immunity to IEC/EN 61000-6-2 electrostatic discharge IEC/EN 61000-4-2 Level 3 radiated, radio-frequency, electromagnetic field IEC/EN 61000-4-3 Level 3 electrical fast transient / burst IEC/EN 61000-4-4 Level 3 surge IEC/EN 61000-4-5 Level 3 conducted disturbances, induced by IEC/EN 61000-4-6 Level 3 radio-frequency fields Interference emission IEC/EN 61000-6-3 high-frequency radiated IEC/CISPR 22, EN 55022 Class B high-frequency conducted IEC/CISPR 22, EN 55022 Class B Data sheet | Voltage monitoring relay CM-EFS.2 - 15 Technical diagrams Load limit curves V 300 V 300 V 200 resistive load 20 20 10 0.1 0.2 0.5 1 2 I 4 6 10 A 2CDC 252 194 F0205 100 80 60 50 40 30 AC load (resistive) 0.2 Switching cycles 1.0 0.8 0.7 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 cos ϕ 1 2 I 4 6 10 A 250 V resistive load 2CDC 252 192 F0205 0.6 0.5 0.5 DC load (resistive) 0.9 F 10 0.1 Derating factor F for inductive AC load Switching current [A] Contact lifetime 16 - Voltage monitoring relay CM-EFS.2 | Data sheet 2CDC 252 193 F0205 resistive load 100 80 60 50 40 30 2CDC 252 148 F0206 V 200 Dimensions in mm and inches 113.4 4.47” 105.9 4.17” 2CDC 252 009 F0011 85.6 3.37” 22.5 0.89” 103.7 4.08” Accessories in mm and inches 8 0.32” 4.8 0.19” 68 2.68” 11.5 0.453” ADP.01 ‑ Adapter for screw mounting MAR.12 ‑ Marker label for devices with DIP switches front to back 110.5 4.31” 2CDC 252 010 F0011 19.9 0.783” 2CDC 252 020 F0011 4T22 7.85 22.2 0.874” 0.309” 60 2.362” 70 2.756” 2CDC 252 008 F0010 62.5 2.461” 10 0.394” 20 0.787” 6.5 0.256” 22.5 0.89” COV.11 ‑ Sealable transparent cover Further documentation Document title Document type Document number Electronic products and relays Technical catalogue 2CDC 110 004 C020x CM-EFS.2 Instruction manual 1SVC 730 570 M0000 You can find the documentation on the internet at www.abb.com/lowvoltage -> Control Products -> Electronic Relays and Controls -> Single Phase Monitors Data sheet | Voltage monitoring relay CM-EFS.2 - 17 Contact us Document number 2CDC 112 174 D0201 (11.2011) ABB STOTZ-KONTAKT GmbH P. O. Box 10 16 80 69006 Heidelberg, Germany Phone: +49 (0) 6221 7 01-0 Fax: +49 (0) 6221 7 01-13 25 E-mail: [email protected] You can find the address of your local sales organisation on the ABB home page http://www.abb.com/contacts -> Low Voltage Products and Systems Note: We reserve the right to make technical changes or modify the contents of this document without prior notice. With regard to purchase orders, the agreed particulars shall prevail. ABB AG does not accept any responsibility whatsoever for potential errors or possible lack of information in this document. We reserve all rights in this document and in the subject matter and illustrations contained therein. Any reproduction, disclosure to third parties or utilization of its contents – in whole or in parts – is forbidden without prior written consent of ABB AG. Copyright© 2010 ABB All rights reserved