User`s manual

254 • Vacon apfiff09 marine
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7
F57 Identification
Identification run has failed.
Possible cause:
1. There was load on the motor shaft when making the identification run with rotating motor.
2. Motoring or generator side torque/power limits are too low to achieve a stable run.
Correcting measures:
 Run command was removed before identification was ready
 Motor is not connected to the AC drive.
 There is load on the motor shaft.
F58 Mechanical brake
This fault is generated when the acknowledge signal from the brake is used. If the status of the
signal is opposite from the control signal for a longer period of time than the delay defined
with P2.15.11 Brake Fault Delay a fault is generated.
Correcting measures:
 Check the condiction and connections of mechanical brake.
F59 SystemBus communication
The master drive sends pulses to all follower drives. If the pulses are missing a system bus
communication fault is generated. The master drive also receives pulses back from the
follower drives (max. four drives) and generates warnings if pulses are missing.
SystemBus communication is broken between master and follower.
Correcting measures:
 Check expander board parameters.
 Check optical fibre.
 Check option board jumpers.
F60 Cooling
Protection for the liquid-cooled units. An external sensor is connected to the drive (DI: Cooling
Monitor) to indicate if cooling liquid is circulating. If the drive is in Stop state only a warning is
issued. In Run state a fault is issued and the drive makes a coast stop.
Possible cause:
1. Liquid cooled drive cooling circulation have been failed
Correcting measures:
 Check reason for cooling failure from external system.