Monitoring Relays 1-Phase True RMS AC/DC Over and Under Voltage Types DUC01, PUC01 DUC01 • TRMS AC/DC over+under, over+over or under+under voltage monitoring relays • Selection of measuring range by DIP-switches • Measuring ranges from 2 to 500 V AC/DC • Adjustable voltage on relative scale • Adjustable hysteresis on relative scale • Adjustable delay function (0.1 to 30 s) • Programmable latching or inhibit at set level • Output: 1 or 2 x 8 A SPDT relay N.D. or N.E. selectable • For mounting on DIN-rail in accordance with DIN/EN 50 022 (DUC01) or plug-in module (PUC01) • 45 mm Euronorm housing (DUC01) or 36 mm plug-in module (PUC01) • LED indication for relay, alarm and power supply ON • Galvanically separated power supply PUC01 Product Description DUC01 and PUC01 are precise TRMS AC/DC over+under, over+over or under+under voltage (selectable by DIPswitch) monitoring relays. The voltage levels are adjustable separately and have their own time delay. Owing to the built-in latch Ordering Key function, the ON-position of the relay output can be maintained. Inhibit function can be used to avoid relay operation when not desired (maintenance, transitions). The LED's indicate the state of the alarm and the output relay. Housing Function Type Item number Output Power supply Range DUC 01 D B23 500V Type Selection Mounting Output Supply: 24 VDC Supply: 24/48 VAC Supply: 115/230 VAC DIN-rail Plug-in DPDT SPDT DUC 01 D 724 500V PUC 01 C 724 500V DUC 01 D B48 500V PUC 01 C B48 500V DUC 01 D B23 500V PUC 01 C B23 500V Input Specifications Output Specifications Input Voltage level Output Measuring ranges 2 to 20 V AC/DC 5 to 50 V AC/DC 20 to 200 V AC/DC 50 to 500 V AC/DC DUC01: Terminals Y1, Y2 PUC01: Terminals 5, 7 Internal resis. Max. volt. > 500 kΩ 350 V > 500 kΩ 350 V > 500 kΩ 600 V > 500 kΩ 600 V Max. voltage for 1 s Note: The input voltage cannot raise over 300 VAC/DC with respect to ground (PUC01 only) Contact input DUC01 PUC01 Disabled Enabled Latch disable 1000 V Rated insulation voltage Contact ratings (AgSnO2) Resistive loads AC 1 DC 12 Small inductive loads AC 15 DC 13 Mechanical life Electrical life 2 x SPDT relays (DUC01) 1 x SPDT relays (PUC01) 250 VAC µ 8 A @ 250 VAC 5 A @ 24 VDC 2.5 A @ 250 VAC 2.5 A @ 24 VDC ≥ 30 x 106 operations ≥ 105 operations (at 8 A, 250 V, cos ϕ = 1) ≤ 7200 operations/h Operating frequency Dielectric strength ≥ 2 kVAC (rms) Dielectric voltage Rated impulse withstand volt. 4 kV (1.2/50 µs) Terminals Z1, Y1 Terminals 8, 9 > 10 kΩ < 500 Ω > 500 ms Specifications are subject to change without notice (21.10.00) 1 DUC01, PUC01 Supply Specifications General Specifications Power supply Rated operational voltage through terminals: A1, A2 or A3, A2 (DUC01) 2, 10 or 11, 10 (PUC01) 724: B48: Overvoltage cat. III (IEC 60664, IEC 60038) Power ON delay Reaction time 24 VDC ± 20%, insulated 24/48 VAC ± 15% 45 to 65 Hz, insulated 115/230 VAC ± 15% 45 to 65 Hz, insulated DC supply AC supply 2 kV 4 kV 4 kV 4 kV 4 kV 4 kV Alarm ON delay Alarm OFF delay Accuracy Temperature drift Delay ON alarm Repeatability Indication for Power supply ON Alarm ON B23: Dielectric voltage Supply to input Supply to output Input to output Rated operational power AC DC 5 VA 3W Output relay ON Environment Degree of protection Pollution degree Operating temperature Storage temperature Housing dimensions DIN-rail version Plug-in version Weight Screw terminals Tightening torque CE-Marking 1 s ± 0.5 s or 6 s ± 0.5 s (input signal variation from -20% to +20% or from +20% to -20% of set value) < 100 ms < 100 ms (15 min warm-up time) ± 1000 ppm/°C ± 10% on set value ± 50 ms ± 0.5% on full-scale LED, green LED, red (flashing 2 Hz during delay time) 1 or 2 x LED, yellow (EN 60529) IP 20 3 (DUC01), 2 (PUC01) -20 to 60°C, R.H. < 95% -30 to 80°C, R.H. < 95% 45 x 80 x 99.5 mm 36 x 80 x 87 mm Approx. 250 g Max. 0.5 Nm acc. to IEC 60947 Yes Mode of Operation DUC01 and PUC01 monitor both AC and DC over+under, over+over or under+under voltage. Example 1 (no contact input - under+over voltage - 2 x SPDT relays (1 x SPDT for PUC01)) DUC01: One relay operates when the voltage drops below the under voltage set point for more than the respective delay time. It releases when the voltage exceeds the set level plus the set hysteresis. The other relay operates when the voltage exceeds the over voltage set point for more than the respective delay time. It releases when the voltage drops below the set level minus hysteresis (the hysteresis is the same for both set levels). 2 PUC01: The relay operates when the voltage drops below the under voltage set level for more than the respective set delay time or when it exceeds the over voltage set level for more than the respective set delay time. The 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). Example 2 (latch enabled active - under+ under voltage - 2 x SPDT relays (1 x SPDT for PUC01)) DUC01: Each relay operates and latches when the voltage drops below the respective set level for more than the respective delay time. Provided that the voltage has exceeded the respective set level (see hysteresis), each relay releases when the contact input’s connection is interrupted. for more than the respective delay time. It releases when the voltage drops below the lower set level (see hysteresis) or when the contact input’s pins are connected. PUC01: The relay operates when the voltage drops below the higher set level for more than the respective delay time. Provided that the voltage has exceeded the respective set level plus hysteresis, the relay releases when the contact input is opened. 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. Example 3 (inhibit enable active - over+ over voltage - DPDT relay (1 x SPDT for PUC01)) Provided that the contact input is opened, the relay operates when the voltage exceeds the lower set level Specifications are subject to change without notice (21.10.00) DUC01, PUC01 Function/Range/Level and Time Delay Setting 5 Selection of measuring range: DIP-switch selector (1 to 2) Contact input as latch function enable. When the contact is closed the latch function is activated. The reset of the latch condition occurs when the contact is open or by power down. 12 2 to 20 V input range 5 to 50 V input range 20 to 200 V input range 50 to 500 V input range ON Contact input as inhibit of alarm enable. When the contact is closed the relay remains in normal position even if alarm condition occurs Selection of function: DIP-switch selector (3 to 6 and 1A, 2A) 3 Relay de-energized in normal condition. 6 Relay energized in normal condition. Set point 1 over voltage monitoring relay. The alarm condition occurs when voltage input is over the set point value. Power ON delay 6 ± 0.5 s Power ON delay 1 ± 0.5 s Set point 1 under voltage monitoring relay. The alarm condition occurs when voltage input is under the set point value. 1A Set point 2 over voltage monitoring relay. The alarm condition occurs when voltage input is over the set point value. ON Set point 2 under voltage monitoring relay. The alarm condition occurs when voltage input is under the set point value. Selection of level and time delay: Upper knob: Setting of hysteresis on relative scale: 0 to 30% on set value. Centre knobs: Current level setting on relative scale: 10 to 110% on full scale. Lower knobs: Setting of delay on alarm time on absolute scale (0.1 to 30 s). 2A ON 2 x SPDT relays (DUC01) 4 1 x DPDT relay (DUC01) Wiring Diagrams Example 1 Example 1 24 VDC (+) 48/230 VAC 24/115 VAC L Z1 PE A1 µ A3 16 24 VDC (+) 48/230 VAC 24/115 VAC L µ 18 26 28 2 U PE Y1 A2 Y2 15 25 10 1 N (-) 24 VDC (+) 48/230 VAC 24/115 VAC Examples 2 and 3 24 VDC (+) 48/230 VAC 24/115 VAC Latch/inhibit enable L Z1 A1 16 L µ µ A3 18 26 2 28 U µ 11 4 3 U PE Y1 Y2 3 U 5 Latch/inhibit enable PE 4 7 N (-) Examples 2 and 3 µ 11 7 A2 15 5 25 N (-) DUC01 Specifications are subject to change without notice (21.10.00) 10 1 N (-) PUC01 3 DUC01, PUC01 Operation Diagrams Over+over voltage Over+over voltage - Latch Power Supply Power Supply Latch ON Set Level 1 Hysteresis Set Level 1 Hysteresis Set Level 2 Hysteresis RE1(DUC01) RE2(DUC01) DPDT(DUC01)/RE(PUC01) Set Level 2 1 or 6 s T1 1 or 6 s T2 Hysteresis T1 T2 1 or 6 s Red LED ON RE1(DUC01) 1 or 6 s T1 RE2(DUC01) 1 or 6 s T2 DPDT(DUC01)/RE(PUC01) 1 or 6 s T1 T2 Red LED ON Over+under voltage - N.E. relay(s) Over+under voltage - Inhibit - N.E. relay(s) Power Supply Power Supply Inhibit ON Set Level 1 Hysteresis Set Level 1 Hysteresis Set Level 2 Hysteresis 1 or 6 s RE1(DUC01) T1 1 or 6 s DPDT(DUC01)/RE(PUC01) T Hysteresis 1 or 6 s T2 RE2(DUC01) 1 or 6 s Set Level 2 T1 RE1(DUC01) T1 1 or 6 s T T2 RE2(DUC01) 1 or 6 s Red LED ON DPDT(DUC01)/RE(PUC01) T1 T1 T2 T1 Red LED ON Under+under voltage Power Supply Set Level 1 Set Level 2 Hysteresis Hysteresis RE1(DUC01) 1 or 6 s RE2(DUC01) 1 or 6 s DPDT(DUC01)/RE(PUC01) 1 or 6 s T1 T1 T2 T Red LED ON 4 Specifications are subject to change without notice (21.10.00)