Bell & Gossett 193 TECHNOVAR VARIABLE SPEED PUMP CONTROLLER AND INTEGRATED AJUSTABLE FREQUENCY DRIVE - Manual (Page 65)

Operating Instruction
65
11 Error Signals
11.1 Low Water
LACK OF WATER :
E R R O R
Remedy:
Check suction pressure or tank level!
If suction pressure or tank level is normal the unit restarts itself. If there is no suction
pressure switch (e.g. circulating systems), bridge terminals X1/6 and X1/7.
11.2 Conveyor Control
VAL.RANGE CONTR.
E R R O R
The set minimum pressure threshold for
monitoring pump delivery (delivery
threshold) was not achieved within the set delay time.
At error reset ON the system is only shut down after 5 attempts of starting. If the delivery
threshold is set at <0, this function is deactivated.
After the cause has been remedied, the malfunction can be reset by cutting off the power
supply for >30 seconds or pressing all three buttons ( ,
and . ) together for about 5
seconds.
11.3 Overheating – Motor
MOTOR OVERHEAT
E R R O R
Possible causes: insufficient cooling
Ambient temperature is too high, motor
overloaded. After the cause has been remedied, the malfunction can be reset by cutting off
the power supply for >30 seconds or pressing all three buttons ( ,
and ) together for
about 5 seconds.
11.4 Overheating – Inverter
INVERT. OVERHEAD
E R R O R
Possible causes: dirty dissipater or lack of
cooling air.
After the cause of the overheating has been remedied, the malfunction can be reset by
cutting off the power supply for >30 seconds or pressing all three buttons ( ,
and )
together for about 5 seconds.
11.5 Over voltage
OVERVOLTAGE
E R R O R
Possible cause: Check mains supply, supply
voltage too high, peak voltage owing to
switching heavy loads on the network, or RAMP 2 is to fast! Find the cause and take
countermeasures (e.g. network filter, RC-elements).
After the cause has been remedied, the malfunction can be reset by cutting off the power
supply for >30 seconds or pressing all three buttons ( ,
and ) together for about 5
seconds.