Shanghai STEP Electric corporation
The connection is shown in the diagrams below:
Inverter wirin
g
R
3
相
220V
接法
单相
220V
N
L
T
主回路端子
R
3
相
220V
L2
S
S
单相
220V
接法
主回路端子
T
L1
L3
Note 2: the PG card shown in the above figure is of the ABZ increment type for the control
of asynchronous motors (AS. T002). If synchronous motor is used, PG card of SIN/CON
type (AS. T007), increment UVW (AS. T010), or Endat absolute type (AS. T013) shall be
used.
4.2.2 Wiring Precautions
IMPORTANT
a) The connection shall conform to relevant electrical engineering standards.
b) Check the wiring and its reliability after wiring. The following items shall be checked:
Is all wiring correct?
Have any wire clippings or screws been left inside the Inverter?
Is any screw loosened?
Does any bare wire at terminal end contact with other terminals?
c) Although
-S3 is equipped with a braking unit, an external braking resistor is
still necessary. The braking resistor shall be installed between Terminal B and
Terminal
○
＋
2, and not anywhere else, or the resistor and the Inverter may be
damaged.
d) The DC reactor shall be connected between Terminals
○
＋
1 and
○
＋
2, and the
short-circuit bar between them shall be removed.
e) When bus low-voltage running is needed, an emergency power of 220V shall be
connected between Terminals RO and TO, and a DC 48V shall be put between
Terminals
○
＋
2 and
○
－
. These may be saved if no bus low-voltage running is required.
f) It is recommended that the grounding wire PE of the Inverter be connected to a
special grounding terminal and the ground resistor shall have its resistance below 10
Ω
.
g) The grounding cable shall be as short as possible.
h) When there is need for wiring changes after powering on, the power shall be cut off
Connection of 3-phase 220V
power
Connection of single-phase
220V power
Main circuit terminals
Main circuit terminals
3 phase 220V
Single-phase 220V
4-
10