S1 series standard inverter
-25-
Terminal
sign
Terminal name
Function description
230V 2.2kW
and below
400V 37kW
and below
400V
45-110kW
400V 132kW and
above
L, N
Main circuit
power input
/
1PH AC input terminal,
connect to the grid
R, S, T
/
Main circuit power input
3PH AC input terminal,
connect to the grid
U, V, W
Inverter output
3PH AC output terminal,
connect to the motor
P1
/
/
/
DC reactor
terminal 1
P1 and (+) connect to
external
DC
reactor
terminal
(+) and (-) connect to
external brake unit terminal
PB and (+) connect to
external
brake
resistor
terminal
(+)
Brake resistor terminal 1
Brake unit
terminal 1
DC reactor
terminal 2,
Brake unit terminal
1
(-)
/
Null
Brake unit terminal 2
PB
Brake resistor terminal 2
/
PE
Grounding resistor is less than 10 ohm
Grounding terminal for safe
protection; each machine
must
carry
two
PE
terminals
and
proper
grounding is required
Note:
1. Do not use asymmetrical motor cable. If there is a symmetrical grounding conductor in the motor
cable besides the conductive shielded layer, ground the grounding conductor on the inverter end
and motor end.
2. Brake resistor, brake unit and DC reactor are optional parts.
3. Route the motor cable, input power cable and control cables separately.
4. "Null" means this terminal is not for external connection.
5. "/"
means this terminal doesn’t exist.
4.3.3 Wiring process of the main circuit terminals
1.
Connect the grounding line of the input power cable to the grounding terminal (PE) of the
inverter, and connect the power input cable to L, N (230V) or R, S and T (400V) terminals and
tighten up.
2.
Connect the grounding line of the motor cable to the grounding terminal of the inverter, and
connect 3PH motor cable to U, V and W terminals and tighten up.
3.
Connect the brake resistor which carries cables to the designated position.
4.
Fix all the cables outside the inverter mechanically if allowed.
