Omron SYSDRIVE 3G3MV SERIES User Manual

7-29
7-8 Self-diagnostic Test
The Inverter incorporates a self-diagnostic test function that checks whether
RS-422/485 communications are functioning.
If the Inverter has a communications failure, take the steps provided below to check
whether the communications function of the Inverter is normal.
H Self-diagnostic Test Steps
1. Set the Parameter
S Set n056 for multi-function input 7 (S7) to 35 through the Digital Operator.
2. Turn OFF the Inverter and Wire the Terminal
S Turn OFF the Inverter and wire the following control terminals. At this time, make sure that all other
circuit terminals are open.
Set SW1 to NPN.
Connect S7 and SC.
Connect R+ and S+.
Connect R– and S–.
3. Turn ON the Inverter and Check the Display
S Turn ON the Inverter.
S Check the display on the Digital Operator.
Normal
The display is normal with no error code displayed.
Fault
The display shows “CE” (communications time-over) or “CAL” (communications standby). In
either case, the communications circuit of the Inverter is broken. Replace the Inverter.
Communications Chapter 7

Omron SYSDRIVE 3G3MV SERIES Specifications

General

Model	SYSDRIVE 3G3MV SERIES
Category	Inverter
Input Frequency	50/60 Hz
Output Frequency	0.1 to 400 Hz
Cooling Method	Forced Air Cooling
Input Voltage	200 to 240 VAC, 380 to 480 VAC
Horsepower Range	0.1 to 15 HP
Power Range	0.1 to 11 kW
Overload Capacity	150% for 60 seconds
Braking Unit	Built-in
Protection Functions	Overcurrent, Overvoltage, Undervoltage, Overheat
Communication	RS-485
Ambient Temperature	-10 to 50°C
Storage Temperature	-20 to 65°C
Humidity	5 to 95% RH (non-condensing)
Vibration	5.9 m/s² or less
Voltage Class	200V, 400V