28 – English
MAINTENANCE
Fault tracing table
Problem/Fault Code
Possible Cause
Potential Solution
Machine will not turn on
The incoming power cable is not live
Check that incoming power is turned on
The EMERGENCY STOP button is
engaged
Twist the Emergency Stop button to release
The safety circuit breaker is open inside
the electrical cabinet
Close circuit breaker to complete the circuit
Problem with the contactor on the back of
the POWER button
Check that wires are connected and firm on the back of the
POWER button as on machine model schematic. Check that
the contactor is engaging when the POWER button is pressed.
Opening display screens
(V1.1) does not change
from 0,00 Hz on the
variable speed drives when
I switch my machine from
STOP to RUN
Problem with the connection of the wires
to STOP/RUN switch or with the contactor
on the back of the STOP/RUN switch
Check that the stop run switch wires inside the control panel
are connected and firm and are engaging and disengaging
when switch is turned.
Opening display screen
(V.1.1) stays on 0,00 Hz on
only one of the varible
speed drives when I switch
my machine from STOP to
RUN
Problem with the electrical connection
from STOP/RUN switch to on of the FWD/
REV switches
Check that linkage wires between STOP/RUN switch and the
FWD/REV switches are connected and firm as machine model
schematic
Problem with the wire connection from
FWD/REV switch to the frequency
inverter or with the contactor on the back
of the FWD/REV switch
Check that linkage wires between FWD/REV switches and
frequency inverter are firm and correct as machine model
schematic. Check that the contactor is completely engaging
and disengaging when switch is turned.
Display screen when on
frequency reference
display (V1.1.2) will not go
all the way to 80 Hz on the
large variable speed drive
Problem with the head speed
potentiometer on the control panel near
the handle bars
Check wires into potentiometer, as machine model schematic.
Replace potentiometer if needed.
Problem with the wiring communications
into the variable speed drive
Check the control panel cable and cable into variable speed
drive terminals for damages
Problem with the data and programming
of the variable speed drive
Re-programming required. Machine needs to be checked by a
Husqvarna service agent
Display screen when on
frequency reference
display (V1.1.2) will not go
all the way to 120 Hz on the
small variable speed drive
Problem with the disc speed
potentiometer on the control panel near
the handle bars
Check wires into potentiometer, as machine model schematic.
Replace potentiometer if needed.
Problem with the wiring communications
into the variable speed drive
Check the control panel cable and cable into variable speed
drive terminals for damages
Problem with the data and programming
of the variable speed drive
Re-programming required. Machine needs to be checked by a
Husqvarna service agent
Display screen when on
frequency reference
display (V1.1.2) will not go
all the way to 100 Hz on the
variable speed drive
Problem with the disc speed
potentiometer on the control panel near
the handle bars
Check wires into potentiometer, as machine model schematic.
Replace potentiometer if needed.
Problem with the wiring communications
into the variable speed drive
Check the control panel cable and cable into variable speed
drive terminals for damages
Problem with the data and programming
of the variable speed drive
Re-programming required. Machine needs to be checked by a
Husqvarna service agent
DC link voltage (screen
V1.18) is less then 550 +/-
5V when the machine is in
stand by
Poor power supply coming into the
variable speed drive
Check voltage and phases to grinding machine at the first point
of output power to the grinder
DC link voltage (screen
V1.18) is less then 500+/-
5V when the machine is in
operation
Poor power supply coming into the
variable speed drive
Check both voltage and phases to grinding machine at the first
point of output power to the grinder, including wiring
connections at the contactor and variable speed drive input
Summary of Contents for PG 530
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