Instruction manual

37
Troubleshooting Parallel Operation alarms and errors:
Alarm message:
Possible Cause:
Parallel Unit Offline A unit connected to the
RS485 bus has lost power.
A RS485 data cable has
been unplugged or damaged.
A communications reset has
been done to a unit
connected to the RS485 bus.
The alarm will be cleared as
soon as the unit comes back
online. DC power to the
output terminals is not
interrupted during a
communications reset.
Parallel Config. Error Multiple units connected to
the RS485 bus are
assigned the same Device
ID.
Multiple units connected to
the RS485 bus are
configured as a Master unit.
Parallel Data Error Multiple units connected to
the RS485 bus are
configured as a Master unit.
A RS485 data cable has
been unplugged or damaged.
The RS485 bus is picking up
electrical interference from
another source.
Parallel Invalid Product A product with a different
output voltage rating is
connected to the RS485 bus.