7ML19985CN01 Milltronics SF 500 - INSTRUCTION MANUAL Page 53
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PID Control
PID Control
The PID control algorithm in the SF 500 works for feed rate control applications. It is
based on motor control type algorithms and includes several anti-windup provisions.
To operate the SF 500 as a controller, address the following:
• hardware
• connections
• setup and tuning
• programming
Hardware
For the SF 500 to operate as a controller, install the optional mA I/O board. Refer to
Interconnection
on page 9.
Connections
In addition to the standard operating connections, make connections to the process
instruments.
Refer to:
•
Interconnection
on page 9, specifically:
•
Relay Output
for relay connections on page 15
•
mA I/O Board
on page 16, for mA input and output connections
•
Auxiliary Inputs
on page 12, for optional remote control
Connect the SF 500 as either a:
1. setpoint controller – rate control
2. setpoint controller – external process variable with or without rate control
PID loop mA output
terminals
(mA I/O)
mA input
terminal
(mA I/O)
1 21 & 215 & 6
2 33 & 427 & 8
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