STEP AS380 Series User Manual

Shanghai STEP Electric Corporation
36
Chapter 4 The Wiring Of Elevator integrated Drive Controller
4.4.4 The main circuit composition
Fig 4.4 Main circuit composition
4.4.5 The detailed description of main circuit terminal wiring
4.4.5.1 grounding terminal （E）/（PE）
a) three-phase AC power supply is recommended to adopt the specialized grounding pole with
good grounding performance. The grounding resistance should be below 10Ω
b) Grounding line should not be shared with welding machine and other power equipment.
c) The specification of selected grounding line should meet the requirements of electric
equipment technical standards. Moreover, the grounding line should be as short as possible. If the
distance between the grounding line and the earth point is too far, the electricity leakage of
integrated drive controller may cause the instability of the electric potential of grounding terminal.
d) Grounding line should adopt the multi-strand copper core line with diameter of 3.5mm
2
. It is
recommended to use specialized yellow-green grounding line.
e) When several elevator integrated drive controller is grounded. It is recommended not to
arrange the wires into loop. The detailed grounding method for several elevator integrated drive
controllers is as the fig 4.5
+1
U
V
W
E
R
S
T
B
-
Switch
Power
Control
Circuit
Emergency
Power
Plug
+2

STEP AS380 Series Specifications

General

Brand	STEP
Model	AS380 Series
Category	Controller
Language	English