3-25
For the external wiring, please attention to the followings:
(A) Control Circuit wiring：
(1) Control circuit wiring (control terminal) must be isolated from main circuit wiring (R,
S, T, U, V, W) and other power lines, so as to avoid electrical noise interference.
(2) Contact output terminal R1A, R1B, R1C (or R2A, R2C) must be isolated from
terminal
c
～
j
, A01, A02, GND, DO1, DO2, DOG, +12V-, -12V, AI1, AI2, GND
when wiring.
(3) In order to avoid the electrical noise interference, the control circuit wiring must
adopt shielding isolation twisted wire, please refer to the following diagram; the
wiring distance should not exceed 50m.
接至變頻器控制端子E
遮蔽隔離線
護套
此端遮蔽線
不連接
以絕緣膠帶包覆
Figure 3 Isolation twisted wire treatment
When connecting the output contact of the multi-function optocoupler to the relay, it is
necessary to add flywheel diode in parallel to both sides of the relay coil, as shown in the
following diagram.
Figure 4 Optical coupler output contacts connected inductive load
g
飛輪二極體
Flywheel diode
(above 100V 100mA)
48V max.
g
50 mA max.
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