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In case of EMU2-RD2-F/C-4W, EMU2-RD4-F/C-4W
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Phase and wire system
Fixed 3-phase 4-wire
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Primary voltage [Default: 220/380 V]
The primary voltage can be selected from the following values for every 2 circuits. (Primary voltage is common for circuit1 and circuit2, or circuit3
and circuit4)
Settings
63.5/110V, 110/190V, 120/208V, 220/380V, 240/415V, 254/440V
Supplementation ----------------------------------------------------------------------------------------------------------------------------------------------------------------
•
The unit can be connected directly to a 110 V or 220 V circuit. To connect it to a circuit of 440 V or more, a potential transformer must
be connected externally.
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Sensor type and primary current [Default: Direct sensor/100 A]
The primary current must be set according to the sensor type as shown below. One of the following settings can be selected for each circuit.
Sensor type
Primary current setting
EMU-CT50 50A
EMU-CT100 100A
EMU-CT250 250A
EMU-CT400 400A
Direct sensor
EMU-CT600 600A
5A
sensor
EMU2-CT5 -4W
5A, 6A, 7.5A, 8A, 10A, 12A, 15A, 20A, 25A, 30A, 40A, 50A, 60A, 75A, 80A, 100A, 120A, 150A, 200A, 250A, 300A, 400A,
500A, 600A, 750A, 800A, 1000A, 1200A, 1500A, 1600A, 2000A, 2500A, 3000A, 4000A, 5000A, 6000A, 7500A, 8000A,
10000A, 12000A, 20000A, 25000A, 30000A
Caution
EMU-CT50, EMU-CT100, EMU-CT250, EMU-CT400 and EMU-CT600 are designed for low-voltage circuits (maximum voltage of 460
V). These models are not applicable to high-voltage circuits. When using EMU2-CT5-4W, pass the secondary side (5A) of the
current transformer through the sensor. The model can be connected directly to circuits of up to 200 V (maximum voltage of 260
V). Connecting it to a high-voltage circuit by mistake may cause burnout of the unit or a fire, resulting in a hazardous situation.
Supplementation ----------------------------------------------------------------------------------------------------------------------------------------------------------------
z
When EMU2-CT5 -4W is used, set the ratings of the primary CT.
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Demand time limit [Default: 2 min]
The current demand time limit and the power demand time limit can be set separately. One of the following settings of each item can be selected for
each circuit.
Item Settings
Current demand time limit
0, 10 sec, 20 sec, 30 sec, 40 sec, 50 sec, 1 to 15 min (in 1-min steps), 20 min, 25 min and 30 min
Power demand time limit
0, 10 sec, 20 sec, 30 sec, 40 sec, 50 sec, 1 to 15 min (in 1-min steps), 20 min, 25 min and 30 min
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Upper and lower limit settings [Defaults: Upper limit setting = Max. setting Lower limit setting = Min. setting]
The upper and lower limits can be set for each circuit as shown below. The upper and lower limits can be set only on the display unit. They
cannot be set by CC-Link communication.
◆
Current demand upper/lower limit settings
Rated primary current setting
Min. upper/lower limit setting
Setting step
Max. upper/lower limit setting
5A to 30A
0.00A
0.01A
40A to 300A
0.0A
0.1A
400A to 3000A
0A
1A
4000A to 30000A
0A
10A
Rated primary current setting
◆
Voltage upper/lower limit setting
Rated primary voltage setting
Min. upper/lower limit setting
Setting step
Max. upper/lower limit setting
63.5/110V to 240/415V
0.0 V
0.1 V
254/440V
0 V
1 V
Rated primary voltage setting
×
(15/11)
Supplementation ----------------------------------------------------------------------------------------------------------------------------------------------------------------
z
Voltage upper/lower limit setting is common for circuit1 and circuit2, or circuit3 and circuit4.
z
Voltage upper/lower limit monitors not “phase voltage” but “line voltage”
