West Control Solutions CALogix - Manual (Page 22)

Derivative Sensitivity
0.5 0-1.5, step 0.1
Cycle time
10 secs 0.1 to 9.9, step 0.1
10 to 81, step 1
SP1 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.
Control offset 0 -9999 to 9999, step 0.01
SP1 offset/manual reset - * ±50% band. Applicable in proportional and ON/OFF mode with integral disable:
Integral time = OFF .
Maximum power
100 0 to 100, step 1%
Maximum % proportional output of SP1. When using proportional control the output of SP1 will not exceed maximum power setting.
Minimum power
0 0 to 100, step 1%
Minimum proportional output of SP1. When proportional control is used the output of SP1 will not reduce below the minimum power setting.
Output power
Read Only 0 to 100, Step 1%
The current proportional output of SP1 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.
Module * – Autotune Settings
Default Options
Mode
Off Off, tune, atsp
Off Run current PID or On/Off settings
Tune Tune controller at 75% of set-point
ATSP Tune controller at setpoint
Use cycle time
No No, Yes
No Use manually entered cycle time
Yes Automatically apply autotune calculated cycle time
Band
Read Only
Autotune calculated proportional band
Integral time
Read Only
Autotune calculated Integral time
DAC
Read Only
Autotune calculated derivative approach control
Cycle time
Read Only
Autotune calculated cycle time
CtA, CtB, Ct1, Ct2, Ct3, Ct4, Os1, Os2, Us
Read Only, Autotune data
Module * - Setpoint 2 Control
Default Options
Operating mode
None DVHI, DVLO, BAND, FSHI, FSLO, COOL, EOP, None
DVHI Deviation high, alarm output if process value rises above the main setpoint by the value inserted at setpoint2
DVLO Deviation low, alarm output if process value falls below the main setpoint by the value inserted at setpoint 2
Band Band, alarm output if process value rises above or falls below main setpoint by value inserted at setpoint2
FSHI Full scale high, alarm output if process value rises above the value inserted at setpoint2
FSLO Full scale low, alarm output if process value falls below the value inserted at setpoint2
Cool See section on heat-cool
EOP See event outputs in programmer section
Mode
PARK P, PI, PID,PD, PARK, On/Off
Primary control type for setpoint 2
P
Proportional
PI Proportional Integral
PID Proportional Integral Derivative
PD Proportional Derivative
Park Holds controller operation – disables output
On/Off On/Off Control
PI, PID and PD can only be selected when operating mode is set as Cool
Subsidiary mode
None LTCH, HOLD, LTHO, NLIN
Setpoint
2 0 -9999 to 9999 step 0.01
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