PROBLEM
SOLUTION
The unit will not start.
Display alternates “rP” with the
“DISPLAY / PROGRAM’ switch
value.
The voltage inputs are reverse phased. If this is the initial start
up, swap the “L1” and “L3” leads to correct the problem. If the
overload relay has been previously running, the power system
has been reverse phased. Check the phase sequence of the
incoming power lines.
The unit will not start.
Display alternates “SP”, “uB”,
“HI”, or “Lo with “DISPLAY /
PROGRAM” switch parameter
value.
The incoming voltage is not within the limits programmed in the
“VUB”, “HV”, and “LV” settings. Adjust the “DISPLAY /
PROGRAM” switch to read the incoming line voltage values.
Correct the incoming power problem and check programmed
limits to verify they are correct.
Display alternates “SP”, “uB”,
or “oc” with “RUN”.
The overload relay has tripped on the fault shown on the display
and is timimg down “RD2” before restarting.
Display alternates “uc” with
“RUN”.
The overload relay has tripped on undercurrent and is timing
down “RD3” before restarting. If undercurrent is not a normal
condition for this installation, check for broken shafts, broken
belts, etc.
Display is showing a solid “SP”,
“uB”, or “oc”.
The unit has tripped on the fault shown and manual reset is
required because of the programmed setting in”#RF”. Check
the system for problems that would produce the single phase,
overload, or current unbalance fault like a jam.
Display is showing a solid “uc”.
The unit has tripped on undercurrent and a manual reset is
required because of the setting in “#RU”. Check the system for
problems that would produce a loss of load like a broken belt or
a pump is out of liquid.
Display is showing a solid “CF”.
The unit has tripped on a single phasing of the current, but was
not single phased by the incoming power. Check for damaged
contacts or loose wiring.
TROUBLESHOOTING
Any questions or comments call SymCom at 1-800-843-8848 or
1-605-348-5580
07/25/03
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