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2. INSTALLATION
2-4
2.2.2 Selection of peripheral devices
(1) Wire size
AC power input terminals R, S, T, motor connection terminals U, V, W, DC
reactor connection terminals P/+, P1, DC terminals P/+, N/-, ground terminals
Wire Sizes, Unit: mm
2
Capacity (K)
Terminal
Screw Size
R, S, T U, V, W P/+, P1, N/- Connection
Wire Type
0.4
0.75
M3.5 2 2 2 2
1.5
2.2
3.7
M4 2 to 5.5 2 to 5.5 2 to 5.5 2 to 5.5
Power
cable 600V
vinyl wire
or
equivalent
Control circuit terminals (all terminals)
Capacity Terminal Screw Size
Wire Size, Unit: mm
2
Wire Type
All capacities M2.5 0.3 to 0.75
Twisted shielded wire,
polyethylene insulated vinyl
wire for instrumentation or
equivalent
MEMO
Refer to the corresponding instruction manual for wires connection
of a stand-alone option connected to the DC terminals P/+, N/-.
NOTICE
Choose the size of the wires connected to the motor connection
terminals so that a voltage drop due to the wires is less than 4V.
The minimum wire size in the above selection table assumes that
the wiring length is less than 20m.
A voltage drop can be found by the following expression:
Line voltage drop (mV) =
3
×
wire resistance (
Ω
/km)
×
wiring length (m)
×
current (A)
Use the ground cable which is as thick as possible.
(2) Crimping terminals
Wire Size, Unit: mm
2
Terminal Screw Size Crimping Terminal Size
M3.5 2-3.5
2
M4 2-4
3.5/5.5 M4 5.5-4