CHAPTER 6 - TROUBLESHOOTING & MAINTENANCE

6.1 Fault Display

When a fault occurs, the inverter turns off its output and displays the fault status in DRV-07. The last 5 faults are saved in FU2-01 through FU2-05 with the operation status at the instance of fault.

Display

Protective

Description

Function

 

 

 

Over Current

The inverter turns off its output when the output current of the inverter flows more than

 

Protection

200% of the inverter rated current.

 

 

The inverter turns off its output if the DC voltage of the main circuit increases higher than

 

Over Voltage

the rated value when the motor decelerates or when regenerative energy flows back to the

 

protection

inverter due to a regenerative load. This fault can also occur due to a surge voltage

 

 

generated at the power supply system.

 

Current Limit

The inverter turns off its output if the output current of the inverter flows at 180% of the

 

Protection

 

(Overload

inverter rated current for more than the current limit time (S/W).

 

Protection)

 

 

Heat Sink

The inverter turns off its output if the heat sink over heats due to a damaged cooling fan or

 

Over Heat

an alien substance in the cooling fan by detecting the temperature of the heat sink.

 

 

The internal electronic thermal of the inverter determines the over heating of the motor. If

 

 

the motor is overloaded the inverter turns off the output. The inverter cannot protect the

 

Electronic Thermal

motor when driving a multi-pole motor or when driving multiple motors, so consider

 

 

thermal relays or other thermal protective devices for each motor.

 

 

Overload capacity: 150% for 1 min

 

Low Voltage

The inverter turns off its output if the DC voltage is below the detection level. Insufficient

 

torque or over heating of the motor can occurs when the input voltage of the inverter

 

Protection

 

drops.

 

 

 

 

The inverter turns off the output when one or more of the input(R, S, T) phase is open and

 

Input Phase Open

the output load is over 50% of the inverter rated current for more than 1 minute. The

 

 

inverter checks whether the phase is open by detecting the DC voltage of the main circuit.

 

Output Phase Open

The inverter turns off its output when the one or more of the output (U, V, W) phase is

 

open. The inverter detects the output current to check the phase open of the output.

 

BX Protection

Used for the emergency stop of the inverter. The inverter instantly turns off the output

 

when the BX terminal is turned ON, and returns to regular operation when the BX terminal

 

(Instant Cut Off)

 

is turned OFF. Take caution when using this function.

 

 

 

Inverter Overload

The inverter turns off its output when the output current of the inverter flows more than the

 

rated level (150% for 1 minute-Inversely proportional to time).

 

External Fault A

Use this function if the user needs to turn off the output by an external fault signal.

 

(Normal Open Contact)

 

 

 

External Fault B

Use this function if the user needs to turn off the output by an external fault signal.

 

(Normal Close Contact)

 

 

 

Operating Method

 

 

when the

According to I/O-48 [Operating Method when the Frequency Reference is Lost], there are

 

Frequency

3 modes: continue operation, decelerate and stop, and free run.

 

Reference is Lost

 

 

 

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Cleveland Range inverter manual Troubleshooting & Maintenance, Fault Display, Display Protective Description
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inverter specifications

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