Rockwell Automation 937CU-DIFRQ_1 Universal Frequency Converter Installation Instructions - Manual (Page 16)

14
Bul. 937
C Universal Frequency Converter Installation Instructions
The Unit is used for display of measured values and for all corresponding settings in parameterization mode.
The universal frequency converter always works internally in Hz (actually in mHz = 0.001 Hz).
If you want the measurement value to be displayed in rpm or r/sec, the number of input pulses per revolution
must be specified. Units are then converted as follows:
•
•
If you want the measurement value to be displayed in l/min, l/h or m3/h, m/s, km/h the number of input
pulses per liter, per m3, per m or per km must be specified. The units are then converted as
specified:
•
• (Measurement range restricted: 0.001 Hz ... 550 Hz)
• (Measurement range restricted: 0.001 Hz ... 550 Hz)
• (Measurement range restricted: 0.001 Hz ... 2 kHz)
• (Measurement range restricted: 0.001 Hz ... 550 Hz)
rpm
Hz 60   
Pulses per revolution
-------------------------------------------------------------------- =
r/sec
Hz
Pulses per revolution
-------------------------------------------------------------------- =
l/min
Hz 60 
Pulses per liter
--------------------------------------------------- =
l/h
Hz 3600 
Pulses per liter
--------------------------------------------------- =
m³/h
Hz 3600 
Pulses per m³
------------------------------------------------- =
m/s
Hz 1000 
Pulses per km
-------------------------------------------------- =
km/h
Hz 3600 
Pulses per km
-------------------------------------------------- =