Parameters Of The Pid Function Block - Samson 3787 Mounting And Operating Instructions

Parameters of the PID Function Block

ACK_OPTION
Index: 46
Access: r, w
Option:
Default:
ALARM_HYS
Index: 47
Access: r, w
Input:
Default:
ALARM_SUM
Index: 45
Access: r, w
Display:
S This parameter allows you to choose whether an alarm should be automatically
acknowledged in the device, i.e. without any influence from the fieldbus host system.
Undefined
HI_HI_ALM
HI_ALM
LO_LO_ALM
LO_ALM
DV_HI_ALM
DV_LO_ALM
BLOCK ALM
Undefined
Note:
The alarm is sent to the fieldbus host system, but not acknowledged by it.
S Used to input the hysteresis for the high and low alarm limits.
The alarm conditions remain active as long as the measured value is within the
hysteresis. The hysteresis value has an effect on the following alarm limits of the PID
Function Block:
HI_HI_LIM
HI_LIM
LO_LO_LIM
LO_LIM
DV_HI_LIM
DV_LO_LIM
0...50 %
0.5 %
Note: The hysteresis value in percent applies to the range of the PV_SCALE parameter
group in the PID Function Block.
S + D Shows the current status of process alarms in the PID Function Block
HI_HI_ALM
HI_ALM
LO_LO_ALM
LO_ALM
DV_HI_ALM
DV_LO_ALM
BLOCK ALM
Note: Additionally, the process alarm can be cleared in this parameter group.
No option
High high alarm
High alarm
Low low alarm
Low alarm
Limit alarm for upper range deviation
Limit alarm for lower range deviation
Block alarm
Violation of the high high alarm
Violation of the high alarm
Violation of the low low alarm
Violation of the low alarm
Violation of the limit alarm for the upper range deviation
Violation of the limit alarm for the lower range deviation
Block alarm
Parameter description
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EB 8383-1 EN