3 Mechanical and Electrical Installation NICE3000
new
User Manual
- 38 -
◆
Main Circuit Wiring
Figure 3-13 Main circuit connection diagram
R
S
T
PB
U
V
W
POWER MOTOR
Three-phase power supply
Safety contactor
Regen. resistor
Braking unit
R
S
T
PB
U
V
W
POWER
MOTOR
Three-phase AC power supply
Safety contactor
Regen. resistor
MDBUN
Jumper bar
(For models of below 37 kW) (For models of 37 kW and above)
1) Cable selection for main circuit
The symmetric shielded cable is recommended as the input and output power cables of the main
circuit. The symmetric shielded cable can reduce electromagnetic radiation of the entire conducting
system compared with the 4-core cable.
Symmetric shielded cable (recommended power cable)
PE
PE conductor
and shield
Shield
Shield
PE
Non-recommended power cable
2) Power input terminals R, S, T
● The cable connection on the input side of the controller has no phase sequence requirement.
● The specication and installation method of external power cables must comply with the local
safety regulations and related IEC standards.
● Use copper conductors of a proper size as power cables according to the recommended values
in Table 4-2.
● The cable between the lter and the input terminals must be shorter than 30 cm. Ensure that
the grounding terminals of the lter and the controller are connected together, and that both
the lter and controller are installed on the same conductive plane that are connected to main
grounding of the cabinet.
To Next Page
Loading...
Need help?
General
