OPERATING PROCEDURES
STATION START-UP AND OPERATION
I-E96-117B
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pushbutton is pressed, the station transfers to basic/auto-
matic. Additional depressions of the
AUTO
pushbutton causes
the station to toggle between the other available control strate-
gies. To return to basic/manual, press the
MAN
pushbutton.
Refer to Table
for a description of pushbutton operation in
relation to function code 80.
Bypass/Manual Override Operation
When the station enters bypass/manual override operation,
the demand output from the station is the value of the control
output contained in the latest update message from the mod-
ule. Table
explains how the alphanumeric display notifies
the operator that the station is in bypass/manual override
operation. The operator can adjust the demand output using
the
OUT
raise/lower pushbutton. If the station is in the bypass
operational mode because of a communication failure, it will
return to normal operation when module to station communi-
cation is established. If a failed analog output forces the station
into bypass, the station will stay in bypass until the problem is
resolved.
If the station is in manual override mode, placing the M/A
switch to the
A
position transfers the station to bypass mode. If
the electric drive option is enabled, the
OUT
raise/lower push-
button energizes the electric drive raise/lower relay contact
outputs.
Acknowledging Alarms
The LED within the alarm acknowledge pushbutton blinks
when an alarm condition exists. Table
explains how to
acknowledge and review alarms. Refer to Table
for a list of
error codes and their meaning. Refer to Table
for corrective
action to take for station error codes. Refer to the plant operat-
ing procedure or contact your system engineer or technician
for steps to take for an alarm condition.
