Manual

88
DXi User Manual
Chapter 12: Troubleshooting
Short Circuit Shutdown
A short circuit shutdown event is generated when the total cumulative current draw
of all conventional outputs (stations, MV's and Pumps) measured by the MV/Sensor
board exceeds 2.75Amps. An alarm will be generated and the MV/Sensor board will
sever the common connection to all conventional outputs, preventing them from
energizing. The severed common connection can be quickly diagnosed by the
illumination of the shutdown LED (reads 'OFF' on main board cover).
Once the alarm is cleared, the MV/Sensor board will reset the common connection.
Note: In the event of a short circuit shutdown, no station LEDs will illuminate if
activated. If a MV or Pump is activated, all MV and Pump LEDs will illuminate in
the same manner as station outputs sharing a common connection will, as described
in the previous section.
MV1 MV2 MV3 P1 P2
24
VAC COM COM COM
FLOW/SENSORS/ALARM
1 2 3 1 2 3 4 5 6
1 2 3 1 2
OFF
FLOW AUX.SENSOR INPUTS MV PUMP
+ - + - + - + - + - + - + - + - + - + + + + + - - -
2 WIRE
24
VAC
F2
5V
12V
3.5V
24VAC
COMMON