West Control Solutions CALogix - Manual (Page 23)

Change setpoint 2 value
Band
2 -9999 to 9999 step 0.01
SP2 proportional band or Hysteresis - * 100% sensor maximum, proportional control eliminates the cycling of on-off control. Output power
is varied, by proportioning action, across the proportional band
Integral time
5 mins 0 to 1000, step 0.1
SP2 integral time/reset - Auto-corrects proportional control offset error
Derivative time
25 secs 0 to 200. step 1
SP2 derivative time/rate - Suppresses overshoot and speeds response to disturbances
DAC
2 0 to 5 step 0.5
SP2 derivative approach control dAC - Tunes warm-up characteristics, independent of normal operating conditions, by adjusting
when derivative action starts during start-up (smaller dAC value = nearer setpoint).
Derivative sensitivity
0.5 0.1 to 1, step 0.1
Cycle time
10 secs 0.1 to 9.9, step 0.1
10 to 81, step 1
SP2 proportional cycle-time - Determines the cycle rate of the output device for proportional control.
The choice of cycle-time is influenced by the external switching device or load. eg. contactor, SSR, valve. A setting that is too long for the
process will cause oscillation and a setting that is too short will cause unnecessary wear to an electro-mechanical switching
device.
Maximum power
100 0 to 100, step 1
Maximum % proportional output of SP2. When using proportional control the output of SP3 will not exceed maximum power setting.
Minimum Power
0 0 to 100, step 1
Minimum proportional output of SP2. When proportional control is used the output of SP3 will not reduce below the minimum power setting.
Output power
Read Only 0 to 100, step 1
The current proportional output of SP2 shown as %.
Manual power
Off Off, 0 to 100, step 1
Manual power overrides PID calculated power output. The proportional output for SP1 will remain constant at the entered value. To return to
PID control set manual power to 0.
Display alarm
No No, Yes
When set to yes, alarm symbol is shown on controller image within CALogix-sw when an alarm output is switched.
Reset latched alarm No No, Yes
Used to clear a latched alarm output on SP2, once the alarm condition has cleared. Set value to yes to clear.
Module * - Setpoint 3 control
Default Options
Operating mode
None DVHI, DVLO, BAND, FSHI, FSLO, EOP, None
Mode
PARK P, PARK, On/Off
Primary control type for setpoint 3
P Proportional
Park Holds controller operation
On/Off On/Off Control
Subsidiary mode
None LTCH, HOLD, LTHO
Setpoint
3 0 -9999 to 9999, step 0.01
Change setpoint 3 value
Band
2 -9999 to 9999, step 0.01
SP3 proportional band or Hysteresis - * 100% sensor maximum, proportional control eliminates the cycling of on-off control. Output power
is varied, by proportioning action, across the proportional band
Cycle time
10 0.1 to 9.9, step 0.1
10 to 81, step 1
SP3 proportional cycle-time - Determines the cycle rate of the output device for proportional control.
The choice of cycle-time is influenced by the external switching device or load. eg. contactor, SSR, valve. A setting that is too long for the
process will cause oscillation and a setting that is too short will cause unnecessary wear to an electro-mechanical switching
device.
Maximum power
100 0 to 100, step 1
Maximum % proportional output of SP3. When using proportional control the output of SP3 will not exceed maximum power setting.
Minimum Power
0 0 to 100, step 1
Minimum proportional output of SP3. When proportional control is used the output of SP3 will not reduce below the minimum power setting.
Output Power
Read Only 0 to 100, step 1
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