Siemens Milltronics BW500/L - Page 120

PID Control
9.5 Programming
BW500 and BW500/L
118 Operating Instructions, 12/2016, A5E33482052-AD
Note
For the mA input:
•
mA input 1 is an external signal normally reserved for controller 1. The signal is input at
terminals 5 and 6 on the mA I/O board.
•
mA input 2 is an external signal normally reserved for controller 2. The signal is input at
terminals 7 and 8 on the mA I/O board.
P250-01 mA Input Range
E
Select 1- 0 to 20, 2-4 to 20
2
Select the appropriate range for the mA input signal.
P255-01 mA Input Function
E
Select: 0, 1-PID SP, 2-PID PV
0
Assign either 1: PID setpoint, or 2: process variable as the function of the mA input.
P401-01 PID Update Time
E
Readings between PID Updates
1
Enter the value, e.g. nominal value of 1.
P402 Process Variable Source
E
1- Rate, 2-Load, 3-mA In
Select the source. Rate and load are internal values.
P405-01 Proportional Term
E
Enter
0.40
Enter the value for the proportional term, for example: nominal value of 0.4.
P406-01 Integral Term
E
Select 1- 0 to 20, 2-4 to 20
0.2
Enter the value for the integral term, for example: nominal value of 0.2.
P407-01 Derivative Term
E
Enter
0.05
Enter the value for the derivative term, for example: nominal value of 0.05.