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3 System Operation
D1 Load signal does not show the minimum value
Cause:
load transducer not on minimum
Run transducer down manually
D2 Load signal cannot be changed
Check whether fault present
if so
- Rest fault (selector switch on status switch up)
if not
Check load circuitIf only "000" is displayed
- current input poles reversed
D3 When changing a point, "Err" or >20 point appears on the display instead of "Point"
Load rating was not run precisely to the point previously programmed.
- Repeat process
but this time
- Run precisely to load rating
It is possible that the digital display shifts after the load rating, if
- the load rating is right at the edge of the adjustment range
- there are marked fluctuations on the connection leads
For this reason:
Run load rating to the middle of the adjustment range (flashing number after the load rating
D4 Load signal cannot be set higher than approx. 500, although the 5kΩ potentiometer runs over
the full range
Load potentiometer wrongly connected (middle reversed with outer)
or
the internal wiring of the configuration cards causes the FMS to expect a current signal as load
default
Check wiring
Check that the correct configuration jumpers are inserted,
if not, change them
D5 Load value does not attain the lowest possible value.
If the load transducer is in the basic position but does not emit bottom value indicated.
Make sure that this position of the load transducer is the lowest load rating position that occurs
in operation.
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