Azbil dcp551 mark II - PID Group Selection

5-16
■ PID group selection
• ID groups can be selected in two ways: by setting a PID segment or through
automatic PID group switching.
A PID group segment and automatic PID group switching can also be
combined. When a PID group number is set to 0, the setting in the previous
segment is continued.
• In a PID group segment setting a PID group number is set in each segment and
PID parameters are used for calculating the control output. The nine PID groups
PID1 to PID9 can be used.
• In automatic PID group switching, the entire SP scale is divided into seven
zones assigning CP-A1 to CP-A6 to each. The PID constants that are used
according to SP values are automatically selected to calculate control output.
The PID group number for each segment specifies A. Seven PID groups from
PID-A1 to PID-A7 can be used.
■ Selection of ouput limiter group
• Output limiter group number can be set for each segment to control the lower
limit (OL) and upper limit (OH) of the control output. oL and oH groups 1 to 9
can be used.
• The output limiter can only be specified by segment; automatic selection cannot
be made.
• When the output limiter is set to 0, the setting in the previous segment is
continued.
Chapter 5. FUNCTIONS
PID group number
1234
PID group segment setting
Zone 7
Zone 6
Zone 5
Zone 4
Zone 3
Zone 2
Zone 1
Entire SP range is
divided into seven zones.
Automatic PID group selection
CP-A6
CP-A5
CP-A4
CP-A3
CP-A2
CP-A1