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.
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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.
Still have questions about your setup? Talk to an engineer or call (210) 405-4248.