IMP Pumps NMTC module - Manual (Page 40)

40
Error code Description Probable cause
E1x Load errors
E10 (drY) Low motor load
Low load detected. Pump is
running dry.
E11 High motor load
Motor might be faulty or
viscous medium is present.
E2x Protection active
E22 (hot) Converter temperature limit
Circuit is too hot and power
was reduced to less than 2/3 of
rated power.
E23 Converter temperature protection
Circuit is too hot to run, pump
stopped.
E24 Converter overcurrent
Hardware overcurrent
protection triggered.
E25 Overvoltage Line voltage is too high.
E26 Undervoltage
Line voltage is too low for
proper operation.
E3x Pump errors
E31 Software motor protection active
Average motor current was too
high, pump load is much higher
than expected.
E4x Device specific error codes
E40 General frequency converter error
Electrical circuitry did not pass
self-test.
E42 (LEd) LED faulty
One of the display segment
diodes is faulty (open/short).
E43 (con) Communications failed
Display board does not detect
proper connection to main
board, but power supply is
present.
E44 DC link current offset
Voltage on DC link shunt (R34)
not in expected range.
E45 Motor temperature outside limits
During MFG. TEST, this is 10k,
1% resistor for 10..30C
During operation, expected
values are -55
° C..150 ° C.
E46 Circuit temperature outside limits
During MFG. TEST, this is
0..50
° C.
During operation, expected
values are -55
° C..150 ° C.
E47 Voltage reference outside limits.
Comparison between internal
references does not match.
E48 15V outside limits 15V supply not 15V.
E49 Test load does not match
No test load detected or
current measurement does not
work properly (MFG. TEST).
E5x Motor error codes
E51 Motor parameters out of range
Motor does not behave as
expected.