Yokogawa DAQWORX - Manual (Page 277)

8-20 IM WX104-01E
• PID Parameters
Specify the PID parameters for each loop.
Target setpoint
Specify the target setpoint in EU (0.0 to 100.0%).
Set between the target setpoint’s upper and lower limits.
Alarm value (1 to 4)
Set the alarm value. (The setting depends on the type of alarm.)
PV and SP alarms EU (0 to 100%)
Deviation-High and Deviation-Low alarms EUS (–100 to 100%)
Deviation alarms EUS (0 to 100%)
Output alarms –5.0 to 105.0%
Proportional band (P)
Specify between 0.1 and 999.9%.
Integral Time(I)
Specify between 0 and 6000s.
Derivative Time(D)
Specify between 0 and 6000s.
Lower Limit
Set the output lower limit between –5.0 and 105.0%.
Upper Limit
Set the output upper limit between –5.0 and 105.0%.
Shutdown
Turn the shutdown function ON or OFF.
Manual Reset
Set the manual reset between –5.0 and 105.0%.
Relay Hysteresis (Value)
Set the relay hysteresis in EU (0.0 to 100.0%).
Relay Hysteresis (Point)
Select the Hysteresis operating point when using ON/OFF control from [Mid], [Lower
Limit], or [Upper Limit].
Preset Out
Select from -5.0 to 105.0% to be used when operation is stopped.
Reverse/Direct
Select reverse/direct switching from [Direct] or [Reverse].
Note
[Relay Hysteresis (Value)] and [Relay Hysteresis (Point)] appear in PID Parameters when
[Control Output] is set to [On/Off-control] on the [Internal Loop] tab of the [Setup] tab. In that
case, [PID], [Output Limit], [Shutdown], and [Manual Reset] are not shown.
8.4 Control Functon General Settngs