Chapter 3 Electrical Installation
8 MONT20 User Manual V1.6
Ground Wiring
• Connect the ground terminal of MONT20 to ground reliably before power on.
There is current leakage to ground in MONT20. The grounding terminals PE must be connected to
ground properly and be as close to grounding point as possible. The grounding area should be as large
as possible. The grounding resistance should be less than 10Ω.
Do not share the grounding wire with other devices (A). MONT20 can share grounding pole with other
devices (C). It achieves the best effect if MONT20 and other devices use dedicated grounding poles (B).
Cable Wiring
In order to avoid interference inter coupling, it is recommended to separate the power supply cables,
motor cables and the control cables, and keep enough distance among them, especially when the
cables are laid in parallel and are long enough.
The signal cables should cross the power supply cables or motor cables, keep it perpendicular (90°) as
shown in the figure below.
Distribute the power supply cables, motor cables and control cables in different pipelines.
Controller
Other Co
ntro
lle
r
PE PE
A. Sharing grounding wire
PE PE
B. Dedicated grounding pole
PE PE
C. Sharing grounding pole
Other Cont
rol
ler
Other
Controller
Power supply cable
Power supply cable
Motor cable
Motor cable
Control cable Control cable
90°
>20 cm
90°
>50 cm
>30 cm
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