User Manual
EM303B General Purpose Inverter
24
(d) Main Circuit Terminal Block of EM303B -220~400
Figure3-2 Main Circuit Terminal Block
Inverter Model No.
W
W1
W2
W3
EM303B-090
~
132
33
-
-
-
EM303B-160
~
200
39
-
-
-
EM303B-220
~
280
88
22
88
22
EM303B-315
~
400
104
26
101
23
Remarks:
1.
EM303B -090 or above: Power input terminals R, S, and T are on the top, and power
output terminals are at the bottom of the inverter.
2.
EM303B -220 or above: There are 2 wiring screws for each terminal.
3.2.2
Main Circuit Terminal Functions
The main circuit terminal functions of EM303B are listed in Table 3-1. Please wire the
terminals correctly as per corresponding function.
Table 3-1 Main Circuit Terminal Functions
Terminal
Function
R、S、T
AC power input terminals for connecting to 3-phase AC power.
(Terminal L1, L2 for AC220V 1-phase input inverter)
U、V、W
Inverter AC output terminals for connecting to 3-phase induction motor.
Positive and negative terminals of internal DC bus for connecting to
external braking unit.
、PB
Connecting terminals of braking resistor, one end connected to
and
the other to PB.
Grounding terminals