Monitoring Relays 1-Phase True RMS AC/DC Over or Under Current Type DIB71 TRMS AC/DC over or under current monitoring relay Current measuring through internal shunt Selection of measuring range by DIP-switches Measuring ranges from 0.1 mA to 5 A AC/DC Adjustable current 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 Galvanically separated power supply Product Description Ordering Key DIB 71 C B23 5A DIB71 is a precise TRMS operation when not desired Housing AC/DC over or under current (maintenance, transitions). Function (selectable by DIP-switch) The LED s indicate the state Type monitoring relays. Direct mea- of the alarm and the output Item number suring or through current relay. Through the built-in Output transformer. shunt it is possible to moni- Power supply Owing to the built-in latch tor loads up to 5 A AC/DC. Measuring range function, the ON-position of 35.5 mm wide housing suit- the relay output can be able both for back and front maintained. Inhibit function panel mounting. can be used to avoid relay Type Selection Mounting Output Measuring range Supply: 24/48 VAC Supply: 115/230 VAC DIN-rail SPDT 0.1 to 5 mA AC/DC DIB 71 C B48 5mA DIB 71 C B23 5mA DIN-rail SPDT 1 to 50 mA AC/DC DIB 71 C B48 50mA DIB 71 C B23 50mA DIN-rail SPDT 10 to 500 mA AC/DC DIB 71 C B48 500mA DIB 71 C B23 500mA DIN-rail SPDT 0.1 to 5 A AC/DC DIB 71 C B48 5A DIB 71 C B23 5A Input Specifications Input (current level) Terminals Y1, Y2 Measuring ranges (cont.) Standard CT (examples) AACrms Max. curr. Measuring ranges TADK2 50 A/5 A 5 to 50 A 60 A Direct Internal resist. Max. curr. CTD1 150 A/5 A 15 to 150 A 180 A Selectable by DIP-switch CTD4 400 A/5 A 40 to 400 A 480 A ..5MA: 0.1 to 1 mA AC/DC 100 40 mA TAD12 1000 A/5 A 100 to 1000 A 1200 A 0.2 to 2 mA AC/DC 100 40 mA TACO200 6000 A/5 A 600 to 6000 A 7200 A 0.5 to 5 mA AC/DC 100 40 mA Max. current for 1 s 100 mA Contact input Terminals Z1, Y1 ..50MA:1 to 10 mA AC/DC 10 120 mA Disabled > 10 k 2 to 20 mA AC/DC 10 120 mA Enabled < 500 5 to 50 mA AC/DC 10 120 mA Latch disable > 500 ms Max. current for 1 s 300 mA ..500MA:10 to 100 mA AC/DC 1 700 mA 20 to 200 mA AC/DC 1 700 mA 50 to 500 mA AC/DC 1 700 mA Max. current for 1 s 1.4 A ..5A: 0.1 to 1 A AC/DC 0.03 6 A 0.2 to 2 A AC/DC 0.03 6 A 0.5 to 5 A AC/DC 0.03 6 A Max. current for 1 s 15 A Specifications are subject to change without notice (26.05.10) 1DIB71 Output Specifications General Specifications Output SPDT relay Power ON delay 1 s 0.5 s or 6 s 0.5 s Rated insulation voltage 250 VAC Reaction time (input signal variation from Contact ratings (AgSnO) 2 -20% to +20% or from Resistive loads AC 1 5 A 250 VAC +20% to -20% of set value) DC 12 5 A 24 VDC Alarm ON delay < 100 ms Small inductive loads AC 15 2.5 A 250 VAC Alarm OFF delay < 100 ms DC 13 2.5 A 24 VDC Accuracy (15 min warm-up time) 6 Mechanical life 30 x 10 operations Temperature drift 1000 ppm/C 5 Electrical life 10 operations Delay ON alarm 10% on set value 50 ms (at 5 A, 250 V, cos = 1) Repeatability 0.5% on full-scale Operating frequency 7200 operations/h Indication for Power supply ON LED, green Dielectric strength Alarm ON LED, red (flashing 2 Hz Dielectric voltage 2 kVAC (rms) during delay time) Rated impulse withstand volt. 4 kV (1.2/50 s) Output relay ON LED, yellow Environment (EN 60529) Supply Specifications Degree of protection IP 20 Pollution degree 3 Operating temperature Power supply Overvoltage cat. III 5A -20 to 50C, R.H. < 95% Rated operational voltage (IEC 60664, IEC 60038) others -20 to 60C, R.H. < 95% through terminals: Storage temperature -30 to 80C, R.H. < 95% A1, A2 or A3, A2 B48: 24/48 VAC 15% Housing 45 to 65 Hz, insulated Dimensions 35.5 x 81 x 67.2 mm B23: 115/230 VAC 15% Material PA66 or Noryl 45 to 65 Hz, insulated Weight Approx. 150 g Dielectric voltage Screw terminals Supply to input 4 kV (1.2/50 s) Tightening torque Max. 0.5 Nm Supply to output 4 kV (1.2/50 s) acc. to IEC 60947 Input to output 4 kV (1.2/50 s) Product standard EN 60255-6 Rated operational power Approvals UL, CSA AC 3 VA CE Marking L.V. Directive 2006/95/EC EMC Directive 2004/108/EC EMC Immunity According to EN 60255-26 According to EN 61000-6-2 Emissions According to EN 60255-26 According to EN 61000-6-3 Mode of Operation DIB71 monitors both AC and set delay time. Provided that Example 2 (Stardard CT) Note DC over or under current the current has dropped (no connection between ter- When the inhibit contact is through an internal shunt. below (or has exceeded) the minals Z1, Y1 - latch func- opened, if the input signal is set point (see hysteresis set- tion disabled) already in alarm position, the Example 1 ting), the relay releases when delay time needs to elapse (connection between termi- the interconnection between The relay operates when the before relay activation. nals Z1, Y1 - latching func- terminals Z1, Y1 is interrupt- measured value exceeds (or tion enabled) ed or the power supply is drops below) the set level for interrupted as well. more than the set delay time. The relay operates and latch- The red LED flashes until the It releases when the current es in operating position delay time has expired or the drops below (or exceeds) the when the measured value measured value comes back set level (see hysteresis set- exceeds (or drops below) the to a non-alarm value (see ting) or when power supply set level for more than the hysteresis setting). is interrupted. 2 Specifications are subject to change without notice (26.05.10)