12-11 Applications
650 Series AC Drive
Application 5: PID
A simple application using a Proportional-Integral-Derivative 3-term controller. The setpoint is taken from AIN1, with
feedback signal from the process on AIN2. The scale and offset features of the analogue input blocks may be used to
correctly scale these signals. The difference between these two signals is taken as the PID error. The output of the PID
block is then used as the drive setpoint.
10k Speed
Setpoint
User Relay
10
9
8
7
6
5
4
3
2
1
RL1A
RL1B
WIRE
SINGLE
STARTING
DIN4/DOUT2 NOT STOP
24V = RUN FWD & RUN REV signals latched,
DIN3 JOG
24V = jog
DIN2 REMOTE REVERSE
0V = remote forward, 24V = remote reverse
DIN1 RUN FORWARD
24V = run forward
+24V
AOUT RAMP OUTPUT
+10V REF
AIN2 PROCESS FEEDBACK
AIN1 PROCESS SETPOINT
0V
DOUT3 (relay)
24V
+10V REF
0V
Control
Terminal
0V = RUN FWD & RUN REV signals not latched
DEMAND (0V = 0%, 10V = 100%)
4mA = 0%, 20mA = 100%
RELAY SOURCE HEALTH i.e. 0V = not healthy
= 0
= 3
= 1
= 1
A or V
= 4-20mA
default source
0V = 0%, 10V = 100%
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