Owner manual

610.44520.40.000 46 / 52 © Gardner Denver Deutschland GmbH
Servicing
Keypad
(PC)
1)
Malfunction Cause Remedy Carried
out by
Mains voltage too low Check mains voltage
DC−bus voltage too low Check supply module
LU

DC−bus
undervoltage
400 V frequency inverter
connected to 230 V mains
Connect frequency inverter to the
correct mains voltage.
Electrician
Short−circuit Search for cause of short−circuit;
check motor cable.
Operator
Electrician
OC1

(11)
Short−circuit
Excessive capacitive charging
current of the motor cable
Use shorter motor cable with
lower charging current..
Electrician
Grounded motor phase Check motor, check motor cable OC2

(12)
Earth fault
Excessive capacitive charging
current of the motor cable
Use shorter motor cable with
lower charging current.
Electrician
Acceleration time too short
(C0012)
 Increase acceleration time
 Check drive dimensioning
U
min
- boost (C0016) set too
large or too small
Correct setting
Only for operation with
control cabinet inverter
2FCxxxx−2NE00
U/f- rated frequency (C0015)
set too small
Correct setting
Differential pressure too high Check differential pressure of the
system.
Side channel blower starts at
half throttle
 Increase acceleration time
 Open valves.
Operator
Frequency
inverter overload
during
acceleration
Impeller jammed Repair side channel blower. Service
*)
Defective motor cable Check wiring.
OC3

(13)
Short−circuit
Interturn fault in the motor Check motor.
Electrician
Deceleration time too short
(C0013)
OC4

(14)
Frequency
inverter overload
during
deceleration
Energy backflow in generator
mode operation too high
Increase deceleration time. Operator
OC5

(15)
Frequency
inverter overload
in stationary
operation
Frequent and too long overload Check dimensioning of side
channel blower.
Operator
OC6

(16)
Motor overload
(I
2
x t - overload)
Motor is thermally overloaded,
for instance, because of
 impermissible continuous
current
 frequent or too long
acceleration processes
Check dimensioning of side
channel blower.
Operator
OH

(50)
Heatsink
temperature> +85
°C
Ambient temperature too high Allow frequency inverter to cool
down and ensure better
ventilation.
Operator
Heatsink strongly polluted Clean heatsink
 Check dimensioning of side
channel blower..
Operator
OH

Heatsink
temperature> +80
°C
Impermissibly high currents or
frequent and too long
accelerations
 Check load, if necessary,
replace defective bearings
Service
*)