Holip HLP-A Series, Instruction Manual

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HLP-A Series
HLP-A Series -
83
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The inverter of HLP series is relatively perfective with the protection f unctions
of overload, inter-phase short circuit, earth short circuit, under-voltage,
overheating and over-current, etc. When a protection f unction happens with
the inverter please check the reasons of faults according to the information
listed in the table below. The inverter can be restarted after the disposal. If the
fault cannot be disposed please contact the local distributor.
Fault
Display
Fault Contents &
Description
Disposal methods
E.OC.A Over-current
during ramp-up
1: Check whether the motor has got short
circuit or partial short circuit and whether the
insulation of output wire is good.
2: Extend the ramp-up time.
3: The configuration of the inverter is not
reasonable. The inverter’s capacity should be
increased.
4: Decrease the torque and increase the set
value.
E.OC.n Over-current at
constant speed
1: Check whether the motor has got short circuit
and whether the insulation of the output wires
is good.
2: Check whether the motor is blocked and
whether there is a sudden change of mechanical
load.
3: Check whether the inverter’s capacity is too
small and increase its capacity.
4: Check whether there is a sudden change in
the power supply voltage.
E.OC.d
E.OC.S
Over-current at
decel
Over-current at
stop
1: Check whether the insulation of the output
wires is good and whether the motor has got
short circuit.
2: Extend the Ramp-down Time.
3: Replace it with an inverter of larger capacity.
4: DC braking is too high. Decrease DC braking.
5: The inverter has failure. Please send it to the
factory for repair.
E.GF.S
E.GF.a
E.GF.n
E.GF.d
Short circuit to
earth
1: Check whether the connection wire of the
motor has got short circuit.
2: Check whether the insulation of the output
wires is good.
3: Please send it for repair.