specifications are subject to change without notice (18.09.06) 1 monitoring relays product description ordering key housing function type item number output power supply range ? ac/dc over current monitoring relay ? current measured through internal shunt ? measuring range 0.5 to 5 a ac/dc ? adjustable current limit on relative scale ? adjustable hysteresis ? programmable latching at set level ? output: 8 a spdt relay normally de-energized ? for mounting on din-rail in accordance with din/en 50 022 (dia01) or plug-in module (pia01) ? 22.5 mm euronorm housing (dia01) or 36 mm plug-in module (pia01) ? led indication for relay and power supply on ? galvanically separated power supply type selection mounting output supply: 24 vdc supply: 48 vdc supply: 24/48 v ac supply: 115/230 v ac din-rail spdt dia 01 c 724 5a dia 01 c 748 5a dia 01 c b48 5a dia 01 c b23 5a plug-in spdt pia 01 c 724 5a pia 01 c 748 5a pia 01 c b48 5a pia 01 c b23 5a input (current level) dia01 terminals y1, y2 pia01 t er minals 5, 7 measuring ranges dir ect inter nal r esist. max. curr. ..5a: 0.5 to 5 a ac/dc 0.05 6 a max. current for 1 s 25 a standar d ct (examples) aac rms max. cur r . tadk2 50 a/5 a 5 to 50 a 60 a tad2 150 a/5 a 15 to 150 a 180 a tad6 400 a/5 a 40 to 400 a 480 a tad12 1000 a/5 a 100 to 1000 a 1200 a taco200 6000 a/5 a 600 to 6000 a 7200 a contact input dia01 terminals z1, y1 pia01 terminals 8, 9 disabled > 10 k enabled < 500 latch disable > 500 ms note: the input voltage cannot raise over 300 vac/dc with respect to ground (pia only) 1-phase ac/dc over current types dia01, pia01 input specifications output spdt r elay rated insulation voltage 250 v ac contact ratings (agsno 2 ) resistive loads ac 1 8 a @ 250 v ac dc 12 5 a @ 24 vdc small inductive loads ac 15 2.5 a @ 250 vac dc 13 2.5 a @ 24 vdc mechanical life 30 x 10 6 operations electrical life 10 5 operations (at 8 a, 250 v , cos ? = 1) operating frequency 7200 operations/h dielectric strength dielectric voltage 2 kvac (rms) rated impulse withstand volt. 4 kv (1.2/50 ?) output specifications dia 01 c b23 5a dia01 and pia01 are precise ac/dc over current monitor- ing relays. direct measuring or through current transformer. owing to the built-in latch function, the on-position of the r elay output can be maintained. the red led indicates the relay status. through the built-in shunt it is possible to monitor loads up to 5 a ac/dc. d ia01 p ia01
2 specifications are subject to change without notice (18.09.06) range setting centre knob: setting of current on relative scale: from 10 to 110% of the full-scale value. hysteresis: approx. 4% of set value, it can be extended by insertinga r esistor between ter minals z1, y1 or 8, 9. approx. resistor values: 10%: 180 k 25%: 47 k 50%: 22 k 75%: 15 k latch: < 500 dia01, pia01 mode of operation dia01 and pia01 monitor both ac and dc over current thr ough an inter nal shunt. they can monitor ac cur - rents up to 6000 a when connected to a suitable cur- rent transformer. example 1 (connection between termi- nals z1, y1 or 8, 9 - latch function enabled) the relay operates and latch- es in operating position when the measured value exceeds the set level. pr o- vided that the current has dropped min. 4% below the set point (see hyster esis) the r elay r eleases when the inter- connection between termi- nals z1, y1 or 8, 9 is inter-r upted or the power supply is inter r upted as well. example 2 (stardard ct) (no connection between ter- minals z1, y1 or 8, 9 - latch function disabled) the relay operates when the current flowing through the transformer exceeds the set level. it r eleases when the current drops min. 4% below the set level (see hysteresis) or when the power supply is inter r upted. power supply overvoltage cat. iii rated operational voltage (iec 60664, iec 60038) through terminals: a1, a2 or a3, a2 (dia01) 2, 10 or 11, 10 (pia01) 724: 24 vdc 20%, insulated 748: 48 vdc 20%, insulated b48: 24/48 vac 15% 4 5 to 65 hz, insulated b23: 115/230 vac 15% 45 to 65 hz, insulated dielectric voltage dc supply ac supply supply to input 2 kv 4 kv supply to output 4 kv 4 kv input to output 4 kv 4 kv rated operational power ac 4 va dc 2 w supply specifications reaction time (input signal variation from -20% to +20% or from +20% to -20% of set value) alarm on delay < 100 ms a larm off delay < 300 ms accuracy (15 min warm-up time) temperature drift 1000 ppm/ repeatability 0.5% on full-scale indication for power supply on led, green output relay on led, red environment (en 60529) degree of protection ip 20 pollution degree 3 (dia01), 2 (pia01) operating temperature -20 to 60, r.h. < 95% storage temperature -30 to 80, r.h. < 95% housing dimensions dia01 22.5 x 80 x 99.5 mm pia01 36 x 80 x 94 mm weight approx. 150 g screw terminals tightening torque max. 0.5 nm acc. to iec 60947 approvals ul, csa (except 748 models) ce marking ye s emc electromagnetic compatibillity immunity according to en 61000-6-2 emission according to en 61000-6-3 general specifications
specifications are subject to change without notice (18.09.06) 3 dia01, pia01 operation diagrams wiring diagrams dia01 pia01 power supply set level relay on hysteresis relay on hysteresis set level latch on power supply 24/48 vdc (+) 24/48 vdc (+) 24/48 vdc (+) 2 4/48 vdc (+) dimensions din-rail plug-in n (-) pe z1 y1 y 2 a1 a3 a 211 12 14 2 4 vdc (+) 48/230 vac 24/115 vac i l l atch/hysteresis adjustment example 1 example 2 n (-) 24 vdc (+) 4 8/230 vac 24/115 vac z 1 y1 y2 a 1a3 a2 11 1 214 i hysteresis adjustment l ~ ~ ~ ~ - + example 1 n (-) pe 8 9 5 7 1 1 2 10 1 4 3 24 vdc (+) 4 8/230 vac 2 4/115 vac i l l atch/hysteresis adjustment example 2 n (-) 24 vdc (+) 48/230 vac 2 4/115 vac 8 9 5 7 1 01 43 i hysteresis a djustment l 11 2 ~ ~ ~ ~ + - 22.5 8 0 8 3 . 5 99.5 6 3 28.5 36 8 0 94 28.5 6 3 90
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