Chapter 7. Trouble Shooting & Maintenance; Fault Display - BENSHAW RSi SG Series Instruction Manual

Chapter 7. Trouble Shooting & Maintenance
7.1 Fault Display
When a fault occurs, the drive turns off its output and displays the fault status in parameter DRV-13. When the fault
is reset, it gets stored in the fault history. The last five (5) faults are saved in the fault history (parameters AFN-01
through AFN-05) along with the drive's speed, status, amps, DC Bus voltage and temperature at the time of the
fault. AFN-01 is the most recent fault.
LCD
Keypad Display
Over Current 1
Ground Fault
Over Voltage
Over Load
Over Heat
E-Thermal
Ext. Trip
Low Voltage
Over Current 2
Protective
Function
Over Current The drive turns off its output when the output current of the drive is
Protection more than 200% of the drive standard duty rated current.
The drive turns off its output when a ground fault occurs and the ground
Ground Fault fault current is more than a preset value. The over current trip function
Protection may also protect the drive when a ground fault occurs due to a low
ground resistance.
The drive turns off its output if the DC bus voltage increases higher
than the OV Trip level. This occurs when the motor decelerates too
quickly or when regenerative energy flows back to the drive due to a
regenerative load. This fault can also occur due to a surge generated at
Over voltage the input power supply system.
protection OV Trip Level 230Vac drive ~ 390VDC
OV Trip Level 460Vac drive ~ 780VDC
OV Trip Level 575Vac drive ~ 980VDC
NOTE: OV fault may be displayed when an output short occurs.
See Over Current-2 fault.
Inverter/Motor When activated with FUN-66, the drive turns off its output when the
Overload output current is greater than 120% (FUN-67 default) for 60 secs.
Protection (FUN-68 default). NOTE: See Overload retention at bottom of table.
The drive turns off its output if the internal thermistor detects an over
Inverter heat condition due to a damaged cooling fan, a foreign substance
Over Heat blocking the heat sink or cooling fan(s), or operation in a high ambient
temperature.
The internal electronic thermal overload protection of the drive has
Electronic determined that the motor has over heated.
Thermal Overload capacity: 130% of DRV-05 for 1 min (DRV-05 ~ DRV-09)
NOTE: See Overload Retention at bottom of table.
Multi-function input configured as "Ext_Trip" has indicated a fault
condition. This function is used to turn off the output using an external
External Trip trip signal. The external trip input can be from an external overload
relay, brake resistor temperature switch or other monitoring/safety
equipment connected to the drive system.
The drive turns off its output if the DC bus voltage decreases below the
Low Voltage trip level.
LV Trip Level 230Vac drive ~ 200VDC
Low Voltage
LV Trip Level 460Vac drive ~ 400VDC
Protection
LV Trip Level 575Vac drive ~ 500VDC
NOTE: Insufficient torque and/or over heating of the motor can occur
when the output voltage of the drive drops.
The drive turns off the output if an output short occurs (motor or cables)
IGBT Short
or if an IGBT is shorted.
Description
7-1