Plc Mode As A Modified Process Pid Mode - Baldor VS1GV21-1B Installation & Operating Manual

10.8 PLC Mode as a Modified Process PID Mode

This example shows how the PLC Mode as a modified Process PID Mode.
Initialization:
Parameter
P1401
P1501
P3431
P3432
P3440
PLC Mode configuration parameters:
Parameter Parameter Dec
Number
P3401 076.000.000.040
P3402 050.000.000.020
P3403 051.000.000.021
P3404 100.000.000.038
P3405 053.002.100.029
P3406 054.000.055.018
P3407 054.000.000.006
P3408 055.000.000.005
P3409 056.000.000.023
P3410 057.000.000.050
P3411 086.000.000.019
J1
1
User Analog Return
2
Analog Input 1
3
Analog Ref. Power +
4
Analog Input 2+
5
Analog Input 2-
6
Analog Output 1
7
Analog Output 2
See recommended tightening torques in Table A-2.
*Note: Remove factory jumper from J2-8 and J3-24 before connecting switch at J2-8.
The Parameter Dec Value column can be used when entering the PLC configuration parameters at the keypad (parameters
are shown as decimal long values - byte3.byte2.byte1.byte0).
For this mode Enable is active.
Use of logical variables A, B, C or D allows for complex PLC logic.
Variable "A" is set based on the outcome of a comparator and then used as an input condition for the torque/speed select
and PID actions.
MN765
Value
PLC
PLC
10
20%
3.00 sec
Byte 3 Condition
Value
Comp A (76)
Input 1 (50)
Input 2 (51)
A (100)
Input 4 (53)
Input 5 (54)
Input 5 (54)
Input 6 (55)
Input 7 (56)
Input 8 (57)
Timer A (86)
See Figure 5-4 for connection information.
PLC operating mode selected
Digital Output 1 Set by PLC Mode Logic
Comparator A monitors absolute speed demand (P10)
Comparator A's constant (12 Hz for 60 Hz max)
Timer A set for 3 seconds
Byte 2 Logic Byte 1 Condition
OR (0) False (0)
OR (0) False (0)
OR (0) False (0)
OR (0) False (0)
XOR (2) A (100)
OR (0) Input 6 (55)
OR (0) False (0)
OR (0) False (0)
OR (0) False (0)
OR (0) False (0)
OR (0) False (0)
*
Forward Enable
Reverse Enable
Jog Enable
Jog Forward
Jog Reverse
Fault Reset
Comment
Byte 0 Action
A (40)
Forward (20)
Reverse (21)
Torque/Speed (38)
PID (29)
Jog Enable (18)
Jog Forward (6)
Jog Reverse (5)
Reset (23)
Start Timer (50)
Fault (19)
J2
Enable
8
Enable
9
Digital Input 1
10
Digital Input 2
PID
11
Digital Input 3
12
Digital Input 4
13
Digital Input 5
14
Digital Input 6
15
Digital Input 7
Fault
16
Digital Input 8
17
Digital Output 1 + (Collector)
18
Digital Output 1 - (Emitter)
19
Digital Output 2 + (Collector)
20
Digital Output 2 - (Emitter)
PLC Mode Description 10-11