Precautions For The Connection Wire - Mitsubishi EMU4-BM1-MB User Manual

5.3 Precautions for the connection wire

• For protection against noise, transmission lines and input/output lines shall not be placed close to or bound
together with the power lines and high-voltage lines. Keep distance as below between them. (except for the
terminal block)
Condition
High-voltage line 600V or less
Other high-voltage line
• For the actual usage, connect the FG terminal to ground. (D-type ground: Type 3) Connect it directly to the
Caution
ground terminal.
• Do not connect to FG terminal during the insulation resistance test and pressure test. Refer to "User's manual
(Details)" Chapter 11 "Specifications" for the applying place.
• The current sensors dedicated to this unit EMU-CT400/600 resemble the split current transformer for general
gauges CW-5SL closely in appearance. However, characteristics are completely different. Be sure to connect
the dedicated current sensor. Connecting CW-5SL to this unit directly may cause failure of the device, a
burnout or a fire.
• Maximum voltage of the circuit connected to EMU4-BM1-MB is 260V, EMU4-HM1-MB is 480 (In 3P4W wiring is 277 / 480V). For
the circuit over this voltage, use the transformer. Using the transformer, primary voltage is configurable up to 11000V. Secondary
voltage can be set up to220V.)
• Make sure that before connecting the cable, the orientation of the current sensor is correct for attachment. K to L is the correct
direction. K: power source side, L: load side
• EMU-CT*** and EMU-CT***-A are extendable up to 50m.
• EMU2-CT5 and EMU2-CT5-4W are extendable up to 11 m, using together with an extension cable. To extend the wire further, use
the current transformer CW-5S(L) for split-type instrument in combination, extending the secondary wiring on CW-5S(L) side.
• EMU-CT*** and EMU-CT***-A are used only for low voltage circuit. It cannot be used for a high voltage circuit. EMU2-CT5 and
EMU2-CT5-4W should be used with the secondary side (5A) of transformer transfixed. If they are used for the circuit directly, they
should be used under 200V.
• Do not ground the secondary side of the current sensor.
5.3.1 How to connect wire
<Voltage input terminals, External input/output terminals>
• Use appropriate crimp-type terminal. Applicable crimp-type terminal is shown in the tables below.
• Use electric wires as below, and tighten the terminal screws by the torque as below.
[EMU4-BM1-MB]
Power supply terminals,
Voltage input terminals
MODBUS communication
terminals
[EMU4-HM1-MB]
Power supply terminals,
Voltage input terminals
MODBUS communication
terminals,
External input/output terminals
<Current input terminals>
• Stripping length of the used wire in use has to be 10 to 11mm.
• In case using stranded wire, take measures so that the filament should not vary by using a bar terminal or by processing the point
twisted.
• When attaching and detaching cables to/from the terminal, use the push button. Check that the wire is securely inserted.
• Insert a wire to the terminal all the way until it touches the end.
• Use appropriate electric wires as shown below.
Applicable wire
stranded wire: AWG20-16 (0.5 - 1.3mm
single wire: AWG24-17 (0.5 - 1.2mm)
Distance
300mm or more
600mm or more
Applicable wire
Stranded wire: AWG26-14
(0.13 - 2.0mm 2 )
Single wire: AWG26-14
(0.41 - 1.62mm)
SPEV（SB）－MPC－0.2×1P
equivalent
Applicable wire
Stranded wire: AWG26-14
(0.13 - 2.0mm 2 )
Single wire: AWG26-14
(0.41 - 1.62mm)
SPEV(SB)－MPC－0.2×1P
equivalent
Applicable crimp-type terminal
2 ) TGV TC-1.25-11T (by NICHIFU) equivalent
12
Tightening Applicable crimp-type terminal
torque
0.8 - 1.0 N·m For M3.5 screw of external
diameter below 7.1mm
0.5-0.6 N·m For M3 screw of external
diameter below 6.1mm
Tightening Applicable crimp-type terminal
torque
0.8 - 1.0N·m For M3.5 screw of external
diameter below 7.1mm
0.5-0.6 N·m For M3 screw of external
diameter below 6.1mm