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KRSL series
16.
High temperature response time ≤ 2 s.
17.
Overload protection response time:
I actual / I set
≥ 1.2
≥ 1.3
≥ 1.5
≥ 1.6
≥ 2.0
≥ 3.0
Response time (s)
60
48
24
8
5
1
5.4. THROUBLESHOOTING
FAULT
PROBABLE REASON
REMEDY
High discharge
temperature
Bad vent condition, Oil
shortage etc.
Check the vent condition, lubricant level,
etc.
Temperature
Sensor Failure
Cable broken or PT100 failure Check the wiring and PT100.
High Pressure
Pressure too high or pressure
sensor failure
Check the pressure and the pressure
sensor.
Pressure Sensor
Failure
Cable broken, Sensor failure or
the cables connect reversely
Check the wiring and pressure
transmitter.
Open Phase
Power open phase or contactor
failure
Check the power and contactors.
Overload
Voltage too low, tubes block,
bearing wear off or other
mechanical failure or wrong set
data etc.
Check the set data, voltage, bearings,
tubes
and other mechanical system.
Unbalance
Current unbalance, contactor
failure or the internal open loop
of the motor
Check the power, contactor and the
motor.
Wrong Phase
Sequence
Phase sequence reversal or
open phase
Check the wiring.
Motor overload
during start
Master start time set to less than
the star delta delay time
Reset the master start time longer than
star
delay + 2 seconds.
Main Contactor
shakes frequently
The emergency stop button is
loose or controller is reset by
interference
Check if the coil of contactor connects
with
RC snubber or not.
Inverter
Communication
Fault
Wrong set of relatively
parameter of controller and
Inverter; Communication cable
loose
Check the set data; Check the cable.
Servicing
