BUSCH R5 - Page 65

Troubleshooting | 12
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Table 2
Message Possible Cause Remedy
Inlet pressure
(warning + alarm)
Inlet pressure too high.
The machine has operated
for too long at a high inlet
pressure.
• Reduce the the inlet pres-
sure.
• Limit the operating time
at a high inlet pressure.
Exhaust gas temperature
(warning + alarm)
Exhaust gas temperature too
high.
• See problem "The ma-
chine runs too hot".
Differential pressure high
(warning – if inlet filter con-
dition monitoring kit in-
stalled).
The inlet filter cartridge is
clogged by dust or particles.
• Replace the inlet filter
cartridge.
Electrical cabinet tempera-
ture
(alarm)
Temperature in the control
unit too high.
Insufficient cooling.
Ambient temperature too
high.
• Remove dust and dirt
from the machine.
• Check the heat ex-
changer.
• Observe the permitted
ambient temperature.
Sensor disconnected
(alarm)
At least one of the analog
sensors has been disconnec-
ted.
• Check the electrical con-
nection of the sensors.
Inverter (VFD)
(alarm)
Variable-frequency drive
(VFD) default.
• Check the variable-fre-
quency drive by an elec-
trician.
• Repair the variable-fre-
quency drive (contact
Busch).
EMO The emergency stop has
been actuated.
• Clarify the reason of the
emergency.
• Solve the problem and
follow the Warning/
Alarm Acknowledgment
Procedure [►52].
Low battery
(alarm)
The PLC battery is low. • Replace the PLC battery
(contact Busch).
Fan breaker
(alarm)
The circuit breaker of the
cooling fan has tripped.
• Refer to schematic and
reset the breaker.
VFD breaker
(alarm)
The circuit breaker of the
variable frequency drive has
tripped.
• Refer to schematic and
reset the breaker.
Analog input module dis-
connected
The analog input module is
not connected or has been
disconnected.
• Refer to schematic and
reconnect the analog in-
put module.