BENSHAW RSi SG Series, Instruction Manual

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7-1
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
Protective
Function
Description
Over Current 1
Over Current
Protection
The drive turns off its output when the output current of the drive is
more than 200% of the drive standard duty rated current.
Ground Fault
Ground Fault
Protection
The drive turns off its output when a ground fault occurs and the ground
fault current is more than a preset value. The over current trip function
may also protect the drive when a ground fault occurs due to a low
ground resistance.
Over Voltage
Over voltage
protection
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
the input power supply system.
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.
Over Load
Inverter/Motor
Overload
Protection
When activated with FUN-66, the drive turns off its output when the
output current is greater than 120% (FUN-67 default) for 60 secs.
(FUN-68 default).
NOTE:
See Overload retention at bottom of table.
Over Heat
Inverter
Over Heat
The drive turns off its output if the internal thermistor detects an over
heat condition due to a damaged cooling fan, a foreign substance
blocking the heat sink or cooling fan(s), or operation in a high ambient
temperature.
E-Thermal
Electronic
Thermal
The internal electronic thermal overload protection of the drive has
determined that the motor has over heated.
Overload capacity: 130% of DRV-05 for 1 min (DRV-05 ~ DRV-09)
NOTE:
See Overload Retention at bottom of table.
Ext. Trip External Trip
Multi-function input configured as “Ext_Trip” has indicated a fault
condition. This function is used to turn off the output using an external
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.
Low Voltage
Low Voltage
Protection
The drive turns off its output if the DC bus voltage decreases below the
Low Voltage trip level.
LV Trip Level 230Vac drive ~ 200VDC
LV Trip Level 460Vac drive ~ 400VDC
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.
Over Current 2 IGBT Short
The drive turns off the output if an output short occurs (motor or cables)
or if an IGBT is shorted.