23
3.4.
Terminal Specifications
Main circuit
Terminal
number
Purpose
Description
R/L1, S/L2,
T/L3
Spare
Unconnected
L1/R, L2/S,
L3/T
Converter input
・
PWM sine wave mode: Connected to the AC power supply through
the AC reactor for the PWM sine wave mode and filter capacitor.
・
120-degree conduction mode: Connected to the AC power supply
through the AC reactor for the 120-degree conduction mode.
(Never input 400 V to the 200 V class converter.)
+
,
-
Converter DC output
Connect the DC input terminals of the inverter to be connected
to the converter.
Do not connect the power supply to the inverter terminals R/L1,
S/L2 and T/L3.
B
Spare
Unconnected
Ground terminal
[Caution] Be sure to connect it to the ground.
When using a noise filter, connect it to a ground terminal of
the filter.
MR, MS, MT Control power supply terminal
・
Operation is available without connecting these terminals.
・
Used when power is supplied to the control circuit only.
・
Connect the AC power supply between [MR] and [MT], not [MS].
・
Connect to the main circuit through an insulation transformer.
[Caution] When used in parallel models (<15022>, <18022>, and
<40044> through <100044>), power should be supplied to not only
a master unit but a slave unit.
RA, SA, TA Voltage detection
Connect the AC input power supply. Be sure to connect this
terminal.
Connect so that the converter main circuit terminals L1/R, L2/S
and L3/T correspond to RA, SA and TA, respectively.
A wrong connection causes malfunction of the converter.