RATIO.pm6.5 - USA
Page 1.22
RATIO
BOGE – RATIO compressor control for screw compressors
Fault messages of the control system
The control unit registers an Error, the compressor is immediately and with-
out an idling phase – automatically shutdown, the error Relay drops and on
the right next to the actual pressure value there blinks a number next to the
red indicator lamp:
– the blinking number indicates the registered cause (see also message
key table under error messages).
Display the message – e.g. by pressing the i-key. Press ↵-key to cancel
the display and acknowledge the message. The main display appears, if the
cause for the fault was rectified.
FAULT RectificationPossible cause
Excessive final
1compression
temperature
Ambient temperature too
high
Cooling unit soiled
Insufficient cooling air
quantity
Insufficient oil quantity
Temperature sensor defec-
tive or wire break
Employ suitable measures to improve the air inlet
and ventilation in the installation room
Clean cooling unit externally
Keep air inlet opening to the compressor clean;
check to ensure that any existing cooling air duct
systems are adequatly dimensioned
Top up oil
Replace temperature sensor or repair the wire
break
Frequency
13 converter /
motor
Motor overload!
Power input too high
caused by undervoltage
Insufficient cooling
of motor /
frequency converter
Motor soiled
Excessive system pressure
Network pressure P
soll
/ P
max
too high
PTC resistor defective or
aged
Ensure correct voltage conditions:
Constant voltage in accordance with IEC 38
Ensure better cooling of motor / frequency con-
verter: improve ventilation of the installation room;
Clean cooling unit and supply air filter
Clean motor cooling air supply
Exchange oil separator cartridge
Reduce line pressure to prevent compr. building up
a compr. load above approved max. pressure
Overhaul motor
Compressed air
0pre-processing
(option)
External unit of the
compressed air treatment
signals malfunction
Service or repair compressed air treatment unit
Note:
This message does not lead to switch-off the com-
pressor and the standard configuration
Fault
red
Acknowledge
messages
RATIO
1.7
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