Monitoring Relays 1-Phase True RMS AC/DC Over or Under Voltage Type DUB71 * TRMS AC/DC over or under voltage monitoring relays * Selection of measuring range by DIP-switches * Measuring ranges from 0.1 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: 5 A SPDT relay N.D. or N.E. selectable * For mounting on DIN-rail in accordance with DIN/EN 50 022 * 35.5 mm DIN-rail housing * LED indication for relay, alarm and power supply ON Product Description Ordering Key DUB71 is a precise TRMS AC/DC over or under voltage (selectable by DIPswitch) monitoring relay. Owing to the built-in latch function, the ON-position of the relay output can be maintained. Inhibit function can be used to avoid relay Housing Function Type Item number Output Power supply Range operation when not desired (maintenance, transitions). The LED's indicate the state of the alarm and the output relay. 35.5 mm wide housing suitable both for back and front panel mounting. DUB 71 C B23 10V Type Selection Mounting Output Measuring range Supply: 24/48 VAC Supply: 115/230 VAC DIN-rail DIN-rail SPDT SPDT 0.1 to 10 V AC/DC 2 to 500 V AC/DC DUB 71 C B48 10V DUB 71 C B48 500V DUB 71 C B23 10V DUB 71 C B23 500V Input Specifications Output Specifications Input (voltage level) Measuring ranges Direct Selectable by DIP-switch ..10V: 0.1 to 1 V AC/DC 0.2 to 2 V AC/DC 0.5 to 5 V AC/DC 1 to 10 V AC/DC Max. voltage for 1 s ..500V: 2 to 20 V AC/DC 5 to 50 V AC/DC 20 to 200 V AC/DC 50 to 500 V AC/DC Max. voltage for 1 s Contact input Disabled Enabled Latch disable Output Rated insulation voltage Contact ratings (AgSnO2) Resistive loads AC 1 DC 12 Small inductive loads AC 15 DC 13 Mechanical life Electrical life Terminals Y1, Y2 Internal resist. Max. volt. >120 k >120 k >120 k >120 k 100 V 100 V 100 V 100 V 200 V 350 V 350 V 600 V 600 V 1000 V 500 k 500 k 500 k 500 k Terminals Z1, Y1 > 10 k < 500 > 500 ms SPDT relay 250 VAC 5 A @ 250 VAC 5 A @ 24 VDC 2.5 A @ 250 VAC 2.5 A @ 24 VDC 30 x 106 operations 105 operations (at 5 A, 250 V, cos = 1) 7200 operations/h Operating frequency Dielectric strength Dielectric voltage 2 kVAC (rms) Rated impulse withstand volt. 4 kV (1.2/50 s) Supply Specifications Power supply Rated operational voltage through terminals: A1, A2 or A3, A2 B48: B23: Overvoltage cat. III (IEC 60664, IEC 60038) 24/48 VAC 15% 45 to 65 Hz, insulated 115/230 VAC 15% 45 to 65 Hz, insulated Specifications are subject to change without notice (13.10.06) Dielectric voltage Supply to input Supply to output Input to output Rated operational power AC AC supply 4 kV (1.2/50s) 4 kV (1.2/50s) 4 kV (1.2/50s) 3 VA 1 DUB71 General Specifications Power ON delay Reaction time Alarm ON delay Alarm OFF delay Accuracy Temperature drift Delay ON alarm Repeatability Indication for Power supply ON Alarm ON Output relay ON 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) LED, yellow Environment Degree of protection Pollution degree Operating temperature Storage temperature Housing Dimensions Material Weight Screw terminals Tightening torque Approvals CE Marking EMC Immunity Emission IP 20 3 -20 to 60C, R.H. < 95% -30 to 80C, R.H. < 95% 35.5 x 81 x 67.2 mm PA 66 Approx. 150 g Max. 0.5 Nm acc. to IEC 60947 UL, CSA Yes Electromagnetic Compatibillity According to EN 61000-6-2 According to EN 61000-6-3 Mode of Operation DUB71 monitor both AC and DC over or under voltage. Example 1 (no connection between terminals Z1, Y1 - latch function disabled) The relay operates when the measured value exceeds (or drops below) the set level for more than the set delay time. It releases when the voltage drops below (or exceeds) the set level (see hysteresis setting), or when power supply is interrupted. Example 2 (connection between terminals Z1, Y1 - latch function enabled) The relay operates and latches in operating position when the measured value exceeds (or drops below) the set level for more than the set delay time. Provided that the voltage has dropped below (or has exceeded) the set point (see hysteresis setting) the relay releases when the interconnection between terminals Z1, Y1 is interrupted, or power supply is interrupted as well. The yellow LED flashes until the delay time has expired or the measured value has dropped below the set point (see hysteresis setting). Note When the inhibit contact is opened, if the input signal is already in alarm position, the delay time needs to elapse before relay activation. Function/Range/Level and Time Delay Setting Adjust the input range setting the DIP switches 1 and 2 as shown below. Select the desired function setting the DIP switches 3 to 6 as shown below. To access the DIP switches open the grey plastic cover as shown below. Selection of level and time delay: Upper knob: Setting of hysteresis on relative scale: 0 to 30% on set value. Centre knob: Voltage level setting on relative scale: 10 to 110% on full scale. 2 Lower knob: Setting of delay on alarm time on absolute scale (0.1 to 30 s). Measuring range Model ON OFF OFF OFF ON ON OFF ON 500 V 20 V 50 V 200 V 500 V 10 V 1V 2V 5V 10 V Relay working mode ON: Normally De-Energized OFF: Normally Energized Power ON delay ON: 6 s 0.5 s OFF: 1 s 0.5 s Contact input ON: Latch function enable OFF: Inhibit function enable Monitoring function ON: Over voltage OFF: Under voltage Specifications are subject to change without notice (13.10.06) DUB71 Operation Diagrams Over voltage - N.D. relay Under voltage - Latch function - N.D. relay Under voltage - N.D. relay Over voltage - Inhibit function - N.D. relay Wiring Diagrams Dimensions 35.5 67.2 45 2 81 18.7 Specifications are subject to change without notice (13.10.06) 3