S&C 5800 Series, Troubleshooting Manual

Page: 11 / 34

S&C Instruction Sheet 1041-550
11
Software Troubleshooting and Error Messages
“Open/Close Contacts Bad” on TROUBLESHOOTING: Event Status screen
a. Check the switch control cable. The switch control must be connected to a switch
to remove this
Active
message. Check that the cable from the line switch is securely
connected to the switch interface connector(s) on the bottom of the switch control.
Check that the line switch and cable(s) are correctly connected and that they are not
damaged.
b. Check the DC wetting voltage. Check the voltage between terminals #1 and #4 on J4
of the PS/IO. The voltage should be the same as the battery voltage on terminals #2
and #3. If the voltage is 0 and the
BAT ON LED is off, see BAT ON LED (on PS/IO)
is OFF on page 8.
c. Check the red 10A DC wetting fuse on the PS/IO. With the fuse installed, check the
DC wetting fuse using the test points and a voltmeter. Replace the fuse if it’s bad.
Real-time data is all zero on Site-Related (or OPERATION) screen
a. Check the switch control cable. Check that the cable is securely connected to the line
switch and to the connector(s) on the bottom of the switch control. Check that the
cable is not damaged. See S&C Instruction Sheet 1041-510 for details.
b. Check the Sensor Conditioning module connections. Carefully check that all con-
nections to the module are secure. For the Sensor Conditioning module location, see
Switch Control Hardware & Software in the Operations Instruction Sheet 1041-540.
Make sure that the three-pin DC POWER connector, at the top center of the Sensor
Conditioning module, is firmly in place.
c. For externally-powered controls, check the power line. Following utility-approved
work procedures and safety practices, verify that the distribution circuit is energized
and that load current is flowing through the switch. Verify that ac power is connected
to the control.
d. For sensor-powered controls, check the voltage from the switch sensors.
Ç
CAUTION
This is a high voltage area of the PS/IO module. When checking the voltage, make
sure the 10-ampere
AC LINE fuse and the 10-ampere dc wetting fuse are OUT and
the ac power line is de-energized.
For switch controls powered from the sensors, you must also disconnect the
switch interface cable(s) on the bottom of the enclosure.
Check the dc voltage across PS/IO J8, pins 1 (positive) and 3. The voltage should be
between 280 and 340 VDC.
NOTE: Do not unplug PS/IO J8.
Real-time voltage or current or kVAR values are wrong
a. Reinitialize the switch control. At the SETUP: Site-Related screen, select Reinitialize
Device . Setup values only take effect after the control has reinitialized.
b. If applicable, check the values on the SETUP: Sensor Configuration screen. Confirm
that the switch serial number(s) on the sensor-calibration data sheet(s) and on the
installed switch(es) are identical. The sensor calibration data sheet is shipped with the
switch and is usually stored in the door pocket of the switch control or low voltage
cabinet. Confirm that the values on the
SETUP: Sensor Configuration screen match
the values on the data sheet. If you change any values, reinitialize the switch control.
c. Check the values on the
SETUP: Site-Related
screen. Confirm that the
Line kV to 120
Vac Base Ratio
,
Voltage Transformer Wiring
, and
Voltage Sensors Present
settings are
correct for this switch and distribution system. If you change any setting, reinitialize
the switch control.