3-20
3.14 Power Input Wire Size, and NFB
The following table shows the recommended wire size for each frame of the E510. It depends on the
application whether or not to install a circuit breaker. The NFB must be installed between the input power
supply and the inverter input (L1 (L), L2, L3 (N)).
Note:
When using a ground protection make sure the current setting is above 200mA and trip delay time is
0.1 sec of higher.
Table 3.16.1 Wiring instrument for frame 1 ~ 4
Model
TM1
TM2
Cable Size
Tightening torque
Cable Size
Tightening torque
AWG
mm²
kgf.cm
Ibf.in Nm
AWG
mm²
kgf.cm
Ibf.in Nm
Frame1 20~12
0.52~3.33
10.20
0.006
1.0
26~14
0.13~2.08
8.16
0.005
0.8
Frame2
18~8
0.81~8.37
18.35
0.010
1.8
Frame3
14~6
2.08~13.30
24.47
0.014
2.4
Frame4
4~3
21.15~26.67
3.15 Control Circuit Wiring
(1)
Separate the wiring for control circuit terminals from main circuit wiring for terminals
(R/L1, S/L2,
T/L3, U/T1, V/T2, W/T3)
.
(2)
Separate the wiring for control circuit terminals R1A-R1B-R1C or R2A, R2B (Relay outputs) from
wiring for terminals S1
– S6, A0, AGND, +10V, AI1, AI2 and GND wiring.
(3)
Use shielded twisted-pair cables (#24 - #14 AWG / 0.5 -2
mm
2
) shown in Fig. 3.17.1 for control
circuits to minimize noise problems. The maximum wiring distance should not exceed 50m (165 ft).
Shield
Twisted Pair
Wrap with insulating Tape
Ground Shield at Inverter
end
ONLY
DO NOT
Ground Shield at
this end
Fig. 3.17.1 Shielded Twisted-Pair
