Super Systems 9205 Series - Manual (Page 89)

Series 9205 Operations Manual Rev A 88
Setpoint Upper Limit
This is the upper limit for the setpoint. The range is –100 to 100.
PV Source
The options for PV Source are either Internal or External. If External is selected, the loop’s PV must be
written by an external source. Selecting Internal will continue normal operation where the source is
determined by the PID loop and the PV type.
Minimum Forward On Time (sec)
This setting specifies the minimum number of seconds for which output must be positive (heating) before
the control is turned off. The maximum value for this setting is 100.
Minimum Forward Off Time (sec)
This setting specifies the minimum number of seconds for which the control must be off after heat is
applied. The maximum value for this setting is 100.
Minimum Reverse On Time (sec)
This setting specifies the minimum number of seconds for which output must be negative (cooling) before
the control is turned off. The maximum value for this setting is 100.
Minimum Reverse Off Time (sec)
This setting specifies the minimum number of seconds for which the control must be off after cooling is
applied. The maximum value for this setting is 100.
Positive Output Accumulator
The Positive Output Accumulator is the sum of the positive outputs (given in percentages up to one decimal
place) measured each second. Therefore, if the following outputs are recorded over five seconds:
Output (in %) Second Passed
100.0 1
99.0 2
99.0 3
98.0 4
97.0 5
Then the value for the Positive Output Accumulator after five seconds will be (100.0 + 99.0 + 99.0 + 98.0 +
97.0) or 493.0.
To reset the Positive Output Accumulator, simply click Edit while the Positive Output Accumulator is
highlighted and confirm the reset. This will cause the Positive Output Accumulator to be reset to zero and
start accumulating values again from that point.
Negative Output Accumulator
The Negative Output Accumulator is the sum of the negative outputs (given in percentages up to one
decimal place) measured each second. The sum of the negative values is expressed as a positive value. This
means that, if an output of -50% is recorded after one second, a value of 50 will be added to the Negative
Output Accumulator. Similarly, if the following outputs are recorded over five seconds:
Output (in %) Seconds Passed
-20.0 1
-20.0 2
-21.0 3
-21.0 4
-22.0 5