Watson-Marlow MM420 - Manual (Page 131)

Issue 10/06 3 Functions
MICROMASTER 420 Operating Instructions
6SE6400-5AA00-0BP0 131
3.11.2 PID fixed setpoint (PID-FF)
Number: 7
Parameter range:
P2201 – r2224
Warnings -
Faults -
Function chart number:
FP3300, FP3310
Analog to the fixed frequencies (refer to Section 3.8), the PID controller has
separate programmable PID fixed setpoints. The values are defined using
parameters P2201 – P2207 and are selected using binector inputs P2220 – P2222.
The selected PID fixed setpoint is available via connector output r2224 where it can
be further processed (e.g. as PID main setpoint
→ P2253 = 2224).
3 methods are available to select the PID fixed setpoints, analog to the fixed
frequencies (Section 3.8):
Direct selection
Direct selection + ON command
Binary-coded selection + ON command
The methods are selected using parameters P2216 – P2218.
P2216
P0701 = 15
or
P0701 = 99, P2220 = 722.0, P2216 = 1
DIN1
r2224
r0722.0
P2220
1
2,3
P2201
0
. . . .
0
. . .
.
. . . .
Fig. 3-48 Example to directly select the PID fixed frequency of fixed frequency 1 via
DIN1