ABB 800xA Operation page 242

PID Controller FCM
OUTPUT LOW LIMIT Field
This field specifies the low limit for the output signal. It is used to limit the output
when the FCM is in the modes specified in the LIMITED OUTPUT MODES field.
It is also the alarm limit if the entry in the OUTPUT LOW ALARMS? field is YES.
Valid entry is a number between -14.0 and 114.0%.
OUTPUT ALARM DB Field
This field is used to define a deadband for the output alarm of this FCM. Valid entry
is a floating point number in percent of range.
OUTPUT RATE LIMIT Field
This field specifies the highest allowed rate of change of the output signal per
second. It is used when the FCM is in the modes specified in the LIMITED
OUTPUT MODES field (except for MAN, OUTPUT RATE LIMIT is not
applicable for manual mode). It is also the alarm limit if the entry in the OUTPUT
RATE ALARMS? field is YES. Valid entry is a number between 0.0 and 128.0%.
SETPOINT HIGH LIMIT Field
This field specifies the high limit for the setpoint values. This limit only applies to
the setpoint modes specified in the LIMITED SETPT MODES field. It is also used
as an alarm limit when the entry in the SETPOINT HIGH ALARMS? field is YES.
Valid entry is a decimal value in engineering units.
SETPOINT LOW LIMIT Field
This field specifies the low limit for the setpoint values. This limit only applies to
the setpoint modes specified in the LIMITED SETPT MODES field. It is also used
as an alarm limit when the entry in the SETPOINT LOW ALARMS? field is YES.
Valid entry is a decimal value in engineering units.
DEVIATION HIGH LIMIT Field
This field specifies the high alarm limit for the deviation value (normalized
measured value input to the PID FCM is greater than the PID setpoint by this
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Appendix A Runtime Templates
3BUR002418-600 A