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Monitoring Relays 1-Phase AC/DC Over Current Types DIA01, PIA01
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 DIA01 PIA01 * * * * * * * *
Product Description
DIA01 and PIA01 are precise AC/DC over current monitoring relays. Direct measuring or through current transformer. Owing to the built-in latch function, the ON-position of the relay 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.
Ordering Key
Housing Function Type Item number Output Power supply Range
DIA 01 C B23 5A
Type Selection
Mounting DIN-rail Plug-in Output SPDT SPDT Supply: 24 VDC DIA 01 C 724 5A PIA 01 C 724 5A Supply: 48 VDC DIA 01 C 748 5A PIA 01 C 748 5A Supply: 24/48 VAC DIA 01 C B48 5A PIA 01 C B48 5A Supply: 115/230 VAC DIA 01 C B23 5A PIA 01 C B23 5A
Input Specifications
Input (current level) DIA01 PIA01 Measuring ranges Direct ..5A: 0.5 to 5 A AC/DC Max. current for 1 s Standard CT (examples) TADK2 50 A/5 A TAD2 150 A/5 A TAD6 400 A/5 A TAD12 1000 A/5 A TACO200 6000 A/5 A Contact input DIA01 PIA01 Disabled Enabled Latch disable Note: The input voltage cannot raise over 300 VAC/DC with respect to ground (PIA only) Terminals Y1, Y2 Terminals 5, 7 Internal resist. 0.05 AACrms 5 to 50 A 15 to 150 A 40 to 400 A 100 to 1000 A 600 to 6000 A Terminals Z1, Y1 Terminals 8, 9 > 10 k < 500 > 500 ms Max. curr. 6A 25 A Max. curr. 60 A 180 A 480 A 1200 A 7200 A
Output Specifications
Output Rated insulation voltage Contact ratings (AgSnO2) AC 1 Resistive loads DC 12 Small inductive loads AC 15 DC 13 Mechanical life Electrical life SPDT relay 250 VAC 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 = 1) 7200 operations/h
Operating frequency Dielectric strength Dielectric voltage 2 kVAC (rms) Rated impulse withstand volt. 4 kV (1.2/50 s)
Specifications are subject to change without notice (18.09.06)
1
DIA01, PIA01
Supply Specifications
Power supply Rated operational voltage through terminals: A1, A2 or A3, A2 (DIA01) 2, 10 or 11, 10 (PIA01) 724: 748: B48: B23: Dielectric voltage Supply to input Supply to output Input to output Rated operational power AC DC Overvoltage cat. III (IEC 60664, IEC 60038)
General Specifications
Reaction time Alarm ON delay Alarm OFF delay Accuracy Temperature drift Repeatability Indication for Power supply ON Output relay ON Environment Degree of protection Pollution degree Operating temperature Storage temperature Housing Dimensions DIA01 PIA01 Weight Screw terminals Tightening torque Approvals CE Marking EMC Immunity Emission (input signal variation from -20% to +20% or from +20% to -20% of set value) < 100 ms < 300 ms (15 min warm-up time) 1000 ppm/C 0.5% on full-scale LED, green LED, red (EN 60529) IP 20 3 (DIA01), 2 (PIA01) -20 to 60C, R.H. < 95% -30 to 80C, R.H. < 95% 22.5 x 80 x 99.5 mm 36 x 80 x 94 mm Approx. 150 g Max. 0.5 Nm acc. to IEC 60947 UL, CSA (except 748 models) Yes Electromagnetic Compatibillity According to EN 61000-6-2 According to EN 61000-6-3
24 VDC 20%, insulated 48 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 4 VA 2W
Mode of Operation
DIA01 and PIA01 monitor both AC and DC over current through an internal shunt. They can monitor AC currents up to 6000 A when connected to a suitable current transformer. Example 1 (connection between terminals Z1, Y1 or 8, 9 - latch function enabled) The relay operates and latches in operating position when the measured value exceeds the set level. Provided that the current has dropped min. 4% below the set point (see hysteresis) the relay releases when the interconnection between terminals Z1, Y1 or 8, 9 is interrupted or the power supply is interrupted as well. Example 2 (Stardard CT) (no connection between terminals Z1, Y1 or 8, 9 - latch function disabled) The relay operates when the current flowing through the transformer exceeds the set level. It releases when the current drops min. 4% below the set level (see hysteresis) or when the power supply is interrupted.
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 inserting a resistor between terminals Z1, Y1 or 8, 9. Approx. resistor values: 10%: 180 k 25%: 47 k 22 k 50%: 75%: 15 k Latch: < 500
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Specifications are subject to change without notice (18.09.06)
DIA01, PIA01
Operation Diagrams
Power supply Power supply Latch ON Set level Hysteresis Relay ON Relay ON Set level Hysteresis
Wiring Diagrams
Example 1
Latch/Hysteresis 24/48 VDC adjustment 24 VDC (+) (+) 48/230 VAC 24/115 VAC
Example 1
24/48 VDC Latch/Hysteresis 24 VDC (+) (+) 48/230 VAC 24/115 VAC adjustment
L Z1 PE - Y1 ~ + Y2 ~ A1 A3 12
14 PE 9 8 2
L 11 4
3
I
A2 11
~
7 5
I
10 1
+ ~
N (-)
N (-)
Example 2
24/48 VDC 24 VDC (+) (+) 48/230 VAC 24/115 VAC
Hysteresis adjustment L Z1 A1 A3 12 14
Example 2
24/48 VDC 24 VDC (+) (+) 48/230 VAC 24/115 VAC Hysteresis adjustment
L 9 8 2 11 4 3
~ ~
Y1 Y2
I
A2 11
~ ~
7 5
I
10 1
DIA01
N (-)
PIA01
N (-)
Dimensions
DIN-rail
22.5 99.5
Plug-in
94
36
90
83.5
80
63
28.5
80
28.5
63
Specifications are subject to change without notice (18.09.06)
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