The Transport locks have not been unlocked.
Defective PH and/or PL proximity switches.
- Check ALL transport locks and optional unlocking hardware.
- Check switch to LED correspondence in the Trailer.
NOTE that a Deactivated PL switch (PL LED in Trailer OFF) means that
the Plate IS Low.
- Check that PH and PL switches appear correctly on the Computer.
Error 632: Trigger Timeout
When Raise Weight is initiated, it is tested that the trigger (TG) proximity
switch is Deactivated within a pre-determined time limit (1.5 sec. typ.), to
make sure that the catch do not elevate without the weight.
Possible causes:
The catch was not locked to the weight.
Trigger switch defective.
Hydraulics needs bleeding.
- Release and lower the catch
by use of Manual Control window (from the Computer) or
by turning the MAN.KEY while pressing Drop and LP/RW buttons, and then
LC button.
- Check Trigger (TG) switch (LED in Trailer and "TG" on Computer).
- Bleed the raise weight cylinder as explained in the Manual.
- Increase the Raise Weight (until TG off) time limit to 3 seconds max.
Error 633: PS1 activated/disconnected
Pressure switch P1 was activated or disconnected during Raise Weight.
- Check P1 wiring.
- Check that "P1" on Computer corresponds to P1 LED OFF in the Trailer.
Error 641: Lower Plate Timeout
Lower Plate has not completed within a predetermined time limit (15 sec. typ).
Possible causes:
The catch was not locked to the weight.
Pressure switch No. 1 (P1) defective or improperly adjusted.
Trigger (TG) proximity switch trouble.
Hydraulics failure.
- Release and lower the catch
by use of Manual Control at Computer screen or
by turning ON MAN.KEY while pressing Drop (LP/RW and RED button), then
LC button.
- Check that "P1" on Computer corresponds to P1 LED OFF in Trailer
and "TG" to TG Led ON.
- Refer to the Manual for adjustment instructions.
- Check that the hydraulic valves, the motor and the motor relay are powered
and functioning properly (refer to the Manual).
- Increase the Lower Plate (until P1 on) time limit to 20 seconds max.
Error 642: Raise Weight Timeout
After initiation of Raise Weight the system must see the first WH (Weight
High) signal within a predetermined time limit (3.5 sec. typ.) and the time
between any two WH signals must not exceed twice this limit.
This prevents the weight from being raised to its top position
(which would cause the weight to drop!) if the WH switch fails or
if no falling height stops are applied.
Possible causes:
WH proximity switch defective.
The uppermost falling height stop (No. 1) is placed too low
(too great falling height No. 1).
Hydraulics failure.
- Check that "WH" on Computer corresponds to WH LED ON in the Trailer.
- Reduce falling height No. 1 to less than approx. 100 mm (4").
- Check that the hydraulic valves, the motor and the motor relay are powered
and functioning properly (refer to the Manual).
- Increase the Raise Weight (until Stop 1) time limit to 4 seconds max.
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