Omron SYSDRIVE 3G3MV SERIES User Manual

8-9
Fault
display
Probable cause and remedyFault name and meaning
BUS Communications error
(Option Unit)
A communications error
occurred at the Option Unit.
• Communications cable wired incorrectly, short-circuited, or
disconnected.
→ Check and correct the communications cable wiring.
• Data destroyed by noise.
→ Change to a dedicated communications cable or to
shielded cable, and mask the shield or ground it at the
power supply.
→ Use a dedicated communications power supply, and
connect a noise filter to the power supply input side.
• Option Unit is damaged.
→ If communications errors frequently occur and there is no
problem with the wiring, replace the Option Unit.
OFF Power supply error
Control power supply voltage
is insufficient.
• No power supply is provided.
→ Check and correct the power supply wire and voltage.
• Terminal screws are loose.
→ Check and tighten the terminal screws.
• Operator connectors are faulty.
→ If only the Operator indicator is not lit, (i.e., if the RUN
and ALARM indicators are lit), check and correct the
Operator’s connectors.
• The Inverter is damaged.
→ Replace the Inverter.
Note This fault is displayed for 200 and 400-V, 5.5-/7.5-kW Inverters only.
Maintenance Operations Chapter 8

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