Omron SYSDRIVE MX2 SERIES User Manual

8-6
8-1 Inspection and Maintenance
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-Axxxx)
8
Inspection and Maintenance
Megger Test
For a megger test of the external circuit, be sure to disconnect all the terminals of the Inverter
and not to apply the test voltage to the Inverter.Use a 500 V DC megger for a megger test.
Conduct the megger test for the Inverter's main circuit after short-circuiting terminals R/L1, S/
L2, T/L3, U/T1, V/T2, W/T3, RB, +1, P/+2 and N/− using wires, as shown below.
 Conduct an Inverter megger test only to the main circuit, not to the control circuit.
 Use a high resistance tester for a power distribution test of the control circuit. Do not use a megger
or buzzer.
Withstand Voltage Test
Do not conduct a withstand voltage test on any part of the Inverter.
Doing the test may cause damage or deteriorate to the parts inside the Inverter.
Checking the Inverter and Converter
The quality of the Inverter and converter can be checked using a tester.
Preparation
1. Disconnect the externally connected power supply wires (R/L1, S/L2, T/L3), the
motor connection wires (U/T1, V/T2, W/T3), and the generation control resistance
(P/+2, RB).
2. Prepare a tester. (Usable range is 1Ω measurement resistance.)
Checking method
The quality can be judged by measuring the conduction state of Inverter main circuit terminal
blocks R/L1, S/L2, T/L3U/T1, V/T2, W/T3, RB, P/+2, and N/
− while alternating the tester polarity.
Power supply
Do not connect the
power supply wires.
Do not connect to the motor.
R/L1 S/L2 T/L3 U/T1 V/T2 W/T3
RB
500 VDC megger
IM
+1 P/+2 N/−
Motor
Ground terminal

Omron SYSDRIVE MX2 SERIES Specifications

General

Brand	Omron
Model	SYSDRIVE MX2 SERIES
Category	Inverter
Language	English