178 Commander SE Advanced User Guide
Issue Number: 4
Example 2
1.21 = 500 Preset speed 1 to 500. This will give an error between PID reference source and PID feedback
1.23 = 10 This will give a PID scaling factor of 1 (Reduce this value to give less trim)
7.10 = 0 Analog input 1 destination to zero
7.14 = 0 Analog input 2 destination to zero
12.03 = 7.01 Threshold source to analog input 1 percentage
12.04 = 5 Threshold level to 5% (set as required)
12.07 = 12.10 Threshold indicator to variable selector select
12.08 = 1.22 Variable selector source 1 to preset speed 2
12.09 = 1.23 Variable selector source 2 to preset speed 3
12.11 = 14.15 Variable selector output to PID output scaling factor
14.02 = 7.01 PID main reference source to analog input 1 percentage
14.03 = 7.02 PID reference source to analog input 2 percentage
14.04 = 1.21 PID feedback source to preset speed 1
14.08 = 1 PID enabled
14.11 = 0 PID integral gain to zero
14.13 = 25 PID high limit to 25
14.14 = -25 PID low limit to -25
14.16 = 1.36 PID output to analog reference 1
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. When analog reference 1 falls below the
threshold level of 5%, the variable selector will be switched to change the PID scaling from 1 to 0. This will have the effect of
disabling the PID loop so that the trim is ignored and analog reference 1 will be fed directly into the drives speed loop.
Therefore if analog reference 1 is at zero speed, the drives output will be zero.
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