Frequency and Motor Speed - PENN Controls - VFD68Bxx - VFD68Cxx - VFD68Dxx - Three‐Phase Motor Speed Controller - VFD68 Three‐Phase Variable Frequency Drive

VFD68 Variable Frequency Drives Technical Bulletin

Product name
VFD68 Three‐Phase Variable Frequency Drive
Document type
Technical Bulletin
Document revision
C
Revision date
2019-08-09

Frequency (Hz) is an expression of motor speed (RPM) on the VFD. Figure 1 and Figure 2 show how the drive's operating frequency is related to the speed (RPM) of the motor.

The VFD68Bxx and VFD68Cxx drive models can be configured to display operating frequency (Hz) or motor speed (RPM). To display motor speed (RPM) instead of operating frequency (Hz):

  1. Set P.160 to 0.
  2. Set P. 37 to the rated motor RPM value.
  3. Set P.160 to 9999 (on the VFD68Bxx and VFD68Cxx models only).

See Adjusting the Default Parameters.

Figure 1. Frequency and Motor Speed (60 Hz)

Figure 2. Frequency and Motor Speed (50 Hz)