SmartFan® Stratus II


ISOLATED POTENTIOMETER CONTROL MODE


Stratus II Variable Frequency Drive AC Motor Speed Control

Isolated Potentiometer Control Mode: Connection for the isolated potentiometer control mode is made on the Isolated I/O terminals using the COM pin for negative reference, 5V pin for positive reference and POT for the wiper control.

Set registers 40001 and 40017 to 513 (0x0201) for forward run isolated potentiometer control mode.
Set register 40014 to desired ramp up rate (1Hz/Sec)
Set register 40015 to desired ramp down rate (1Hz/Sec)
Set register 40030 to 1 to save to EEPROM.

The Isolated Current Control mode is split into the following three control modes:

  • Positive Slope
  • Negative Slope
  • Two Speed

Positive Slope:
Set register 40019 to the maximum output that the motor should receive (1Hz resolution) Point A
Set register 40020 to the minimum output that the motor should receive (1Hz resolution) Point B
Set register 40022 to the control value where the maximum output will occur (0-100%) Point E
Set register 40023 to the control value where the minimum output will occur (0-100%) Point D
Set register 40024 to the control value where the alarm condition will occur (0-100%) Point C

  • To disable alarm set to 0%
  • To Idle when in alarm set bit 4 in Register 40013
  • To alarm on over limit set bit 6 in Register 40013

Negative Slope:
Set register 40019 to the maximum output that the motor should receive (1Hz resolution) Point A
Set register 40020 to the minimum output that the motor should receive (1Hz resolution) Point B
Set register 40022 to the control value where the maximum output will occur (0-100%) Point D
Set register 40023 to the control value where the minimum output will occur (0-100%) Point E
Set register 40024 to the control value where the alarm condition will occur (0-100%) Point C

  • To disable alarm set to 0%
  • To Idle when in alarm set bit 4 in Register 40013
  • To alarm on over limit set bit 6 in Register 40013

Two Speed:
Set register 40019 to the maximum output that the motor should receive (1Hz resolution) Point A
Set register 40020 to the minimum output that the motor should receive (1Hz resolution) Point B
Set register 40022 to the control value where the speed change will occur (0-100%) Point D
Set register 40023 to the same value as register 40022
Set register 40024 to the control value where the alarm condition will occur (0-100%) Point C on figure xx

  • To disable alarm set to 0%
  • To Idle when in alarm set bit 4 in Register 40013
  • To alarm on over limit set bit 6 in Register 40013

Stratus II Variable Frequency Drive AC Motor Speed Control Manual Pages

Use the links below for addtional manual pages or for a complete manual or click on the Operation/Installation Manual PDF link above.





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