Analog Input Trim - Control Techniques Commander SE Advanced User's Manual

Example 2
The variable selector can also be used to select between two modes of operation of an unprotected parameter of the drive
e.g. parameter 1.14 reference select
Set-up
1.22 = 0.4
1.23 = 0.l
9.04 = 6.30
9.05 = 1
9.06 = 6.32
9.07 = 1
9.10 = 12.10
12.08 = 1.22
12.09 = 1.23
12.11 = 1.14
Perform a Save routine: xx.00 = 1000 and press red Stop / Reset button on the drive
Operation
When either the run forward or run reverse terminal is closed allowing the drive to run, keypad mode is selected. This allows
the drive's speed to be increased or decreased via the drive's up and down buttons on the drive's keypad. The drive can also
be stop or started via the drive's keypad.
If the drive is running and either the run forward or run reverse terminal is opened, the drive will stop as keypad mode is de-
selected and terminal mode selected.
NOTE
Parameter 1.14 was only unprotected in V01.08.00 software.
To change between other different modes of parameter 1.14 or another parameter, change the values of parameters 1.21 and
1.22
0.0 Mode 0
0.1 Mode 1
0.2 Mode 2
0.3 Mode 3
0.4 Mode 4
0.5 Mode 5
12.18

Analog input trim

The following set-up allows analog input 1 to be used as the main speed reference and analog input 2 as an offset trim of the
main reference.
Example 1
1.21 = 500
7.10 = 0
14.02 = 7.01
14.03 = 7.02
14.04 = 1.21
14.08 = 1
14.11 = 0
14.13 = 25
14.14 = -25
14.16 = 1.36
Perform a Save routine: xx.00 = 1000 and press red Stop / Reset button on the drive
Operation
With the above set-up, analog reference 1 can be used as normal to control the speed of the motor. Analog reference 2 can
be used to increase or decrease (trim) this speed around analog reference 1. With this set-up the trim will be approx. ±12.5Hz
around analog reference 1. Parameter 14.13 and 14.14 can be increased or decreased to give larger or smaller trim value.
One problem with the above set-up is if maximum trim is set on analog reference 2 with zero speed reference on analog ref-
erence 1, the drive will run at maximum trim speed and not go to zero speed. If the motor is required to go to zero speed with
zero reference, the following set-up should be used.
Commander SE Advanced User Guide
Issue Number: 4
Preset speed 2 to 0.4
Preset speed 3 to 0.1
Logic source 1 to run forward
Logic source 1 inverted
Logic source 2 to run reverse
Logic source 2 inverted
Logic destination to variable selector select
Variable selector source 1 to preset speed 1
Variable selector source 2 to preset speed 2
Variable selector output to reference select
A1.A2
A1.Pr
A2.Pr
Pr
PAd
Prc
Preset speed 1 to 500. This will give an error between PID reference source and PID feedback
Analog input 1 destination to zero 7.14 = 0 Analog input 2 destination to zero
PID main reference source to analog input 1 percentage
PID reference source to analog input 2 percentage
PID feedback source to preset speed 1
PID enabled
PID integral gain to zero
PID high limit to 25
PID low limit to -25
PID output to analog reference 1
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