3-44 Programming and Parameters
PowerFlex 40 Adjustable Frequency AC Drive FRN 1.xx - 7.xx User Manual
Publication 22B-UM001I-EN-E
Advanced Program Group (continued)
A164 [Comm Write Mode]
Determines whether parameter changes made over communication port are saved and stored in
Non-Volatile Storage (NVS) or RAM only. If they are stored in RAM, the values will be lost at
power-down.
Options 0 “Save” (Default)
1 “RAM Only”
ATTENTION: Risk of equipment damage exists. If a controller is programmed to
write parameter data to Non-Volatile Storage (NVS) frequently, the NVS will quickly
exceed its life cycle and cause the drive to malfunction. Do not create a program that
frequently uses configurable outputs to write parameter data to NVS unless A164
[Comm Write Mode] is set to option 1.
A165 [Anlg Loss Delay] Related Parameter(s): A122
Sets the length of time after power-up during which the drive will not detect an analog signal loss. The
drive response to an analog signal loss is set in A122
[Analog In Loss].
Values Default: 0.0 Secs
Min/Max: 0.0/20.0 Secs
Display: 0.1 Secs
A166 [Analog In Filter]
Sets level of additional filtering of the analog input signals. A higher number increases filtering and
decreases bandwidth. Each setting doubles the applied filtering (1 = 2x filter, 2 = 4x filter, etc...). No
additional filtering is applied when set to “0”.
Values Default: 0
Min/Max: 0/14
Display: 1
A167 [PID Invert Error]
When set to “Inverted”, changes the sign of the PID error. This causes an increase in the drive output
frequency with PID Feedback greater than PID Setpoint, and a decrease in drive output frequency
with PID Feedback less than PID Setpoint.
Options 0 “Not Inverted” (Default)
1 “Inverted”
22B-UM001.book Page 44 Tuesday, May 30, 2017 5:22 PM
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