EFD MINAC 25 Twin, User Manual, Page: 13 / 42

MINAC Systems Revision A
USER MANUAL 31 January 2005
63860.doc
© For reproduction rights, see cover page. Page 10
5.1.1 Footer Messages
Each screen shown on the display contains a footer field where the following
information is displayed (with priority as indicated):
1. Alarm messages.
2. Indications/limitations when the power is on.
3. Messages during normal operation.
Remove the alarm messages by eliminating the cause of the alarm and pressing the
RESET button on the operating panel.
Table 3. Alarm Messages and Causes
Alarm Cause
Emergency Stop
DC Voltage Too Low
DC Voltage Too High
Power Supply Alarm
Power On By
Start-up Alarm
External fault
Over-current driver alarm
Capacitive alarm
AC over-current alarm
DC over-voltage detected
Inductive alarm
Ground fault detected
Water flow low
Over temp. inlet water
Over temp. inverter
DC over-current alarm
Low frequency alarm
High frequency alarm
Switch mode supply alarm
Fuse fan alarm
System reset by
WatchDog Timeout
Main contactor off
Emergency Stop has been activated on externally connected
equipment.
The voltage across the rectifier is too low (the DC voltage is
measured directly). Check the supply voltage.
The voltage across the rectifier is too high (the DC voltage is
measured directly). Check the supply voltage.
Fault in the power supply to the electronics.
A "Power on" device has been activated when the converter was
turned on. Check the button on the HHT handle.
User defined event/failure has taken place.
Transistor current too high or driver circuit failure.
AC current is too capacitive or a short circuit has occurred in the
output circuit.
Over-current in the output circuit was detected.
DC over voltage peak was detected.
AC current is too inductive.
Circuitry shorted to ground.
Water flow in the cooling circuit too low
Cooling water inlet temperature too high
Inverter heat sink temperature too high
DC over-current was detected.
Output circuit resonance frequency below limit
Output circuit resonance frequency above limit
Problem on the SMPS card.
Internal cooling fan broken.
The unit has been restarted automatically by the micro controller
due to an internal failure in software or hardware
The main contactor is not energized.
For further descriptions of the various causes and actions, refer to Paragraph 6.7,
”Disturbance of Operation and Corrective Measures.”