PID Control Configuration on SCADAPack in Telepace Studio
Key Takeaway
How to configure and tune PID control loops on SCADAPack RTUs — setpoint, process variable, output scaling, tuning, and manual/auto switching.
Quick Answer
SCADAPack includes a PID function block in Telepace Studio for local closed-loop control. Configure the process variable (analog input), setpoint (local or remote-written via DNP3/Modbus), output (analog output to valve or VFD), and tuning parameters (Kp, Ti, Td).
Configuration
- Add PID function block to the program
- Assign PV source (scaled analog input register)
- Set SP (fixed or remote-writable register)
- Assign CV output (analog output channel)
- Configure Kp, Ti, Td tuning parameters
- Set output limits (0-100% or custom range)
- Select direct or reverse acting
Remote Setpoint
The SCADA master can write new setpoints via DNP3 Analog Output or Modbus holding register, enabling remote PID adjustment without field visits.
Example: Separator Pressure Control
PV=pressure transmitter (4-20mA, 0-100 PSIG), SP=50 PSIG, CV=control valve (4-20mA output). Start with Kp=2.0, Ti=60s, Td=0. Tune based on step response.
For cross-platform PID comparison, see Allen-Bradley PIDE and IDEC FC6A PID.
Frequently Asked Questions
Yes. A built-in PID function block in Telepace Studio supports proportional, integral, derivative terms with output limits and manual/auto switching.
Yes. The PID setpoint register can be written via DNP3 Analog Output or Modbus holding register for remote adjustment.