Samson foundation 3787, Mounting And Operating Instructions, Page: 74 / 96

OUT N
Index: 9
Access:
r, w in MAN, O/S
Shows the manipulated variable, value, limit and status of the PID Function Block.
Note: If the MAN mode in MODE_BLK is selected, the output value OUT can be
entered manually here. The unit used is taken on by the OUT_SCALE parameter
group. The input range corresponds to OUT_SCALE
±
10 %.
OUT_HI_LIM S
Index: 28
Access:
r, w
Input:
Default:
Used to input the maximum value of the analog manipulated variable (OUT).
Range of OUT_SCALE
±
10 %, unit of OUT_SCALE
100
OUT_LO_LIM
S
Index: 29
Access:
r, w
Input:
Default:
Used to input the minimum value of the analog manipulated variable (OUT).
Range of OUT_SCALE
±
10 %, unit of OUT_SCALE
0
OUT_SCALE S
Index: 11
Access:
r, w in MAN, O/S
Default:
Defines the range (lower range and upper range), the engineering unit and the
number of digits behind the decimal point of the manipulated variable (OUT).
0...100 %
PV D
Index: 7
Access:
r
Shows the process variables, including the status, used for executing the block.
Note: The unit used is taken over by the PV_SCALE parameter group.
PV_FTIME S
Index: 16
Access:
r, w
Default:
Used to input the filter time constant (in seconds) of the digital filter of first order.
This time is required to allow 63 % of a change of the controlled variable to become
effective at the input IN in the PV value.
0 s
PV_SCALE S
Index: 10
Access:
r, w in MAN, O/S
Default:
Defines the range (lower range and upper range), the engineering unit and the
number of digits behind the decimal point of the process variable (PV).
0...100 %
RATE
S
Index: 26
Access:
r, w
Default:
Used to input the time constant for the derivative function.
0 s
RCAS_IN N
Index: 32
Access:
r, w
Used to input and display the analog reference variable (value and status) provided by
the fieldbus host system and used as the set point to calculate the manipulated variable.
Note: This parameter is only active in the RCAS mode.
RCAS_OUT D
Index: 35
Access:
r
Shows the analog reference variable (value and status) after ramping.
This value is provided by the fieldbus host system to perform back calculations when
the operating mode changes or with limited signals.
Note: This parameter is only active in the RCAS mode.
74
EB 8383-1 EN
Parameter description