Delta VFD-B - User Defined Coefficient K

Chapter 5 Parameters|VFD-B Series
Revision July 2008, BE16, SW V4.08 & V5.00 5-25
00 - 04 Content of Multi-Function Display
07
Display the actual motor speed in rpm (enabled in
vector control mode or PG (Encoder) feedback control)
(LED H and LED U).
08
Display the estimated value of torque in Nm as it relates
to current.
09
Display PG encoder feedback pulses/10ms.
Display value= (rpm*PPR)/6000 (see note)
10 Display analog feedback signal value in %.
11
Display the signal of AVI analog input terminal in %.
Range 0~10V corresponds to 0~100%. (LED U)
12
Display the signal of ACI analog input terminal in %.
Range 4~20mA corresponds to 0~100%. (LED U)
13
Display the signal of AUI analog input terminal in %.
Range -10V~10V corresponds to 0~100%. (LED U)
14
Display the temperature of heat sink in °C.
 This parameter sets the display when Pr. 00-03 is set to 03.
 Pr.00-04=09. The display value is (((rpm/60)*PPR)/1000ms)*10ms
with rpm=motor speed in revs/min and PPR=encoder pulse per revolution
 When the display shows the multi-function display (Pr.00-03=03), the user also can view other
information by pressing the “LEFT” key
on the VFD-PU01 keypad.
00 - 05 User Defined Coefficient K Unit: 0.01
Settings 0.01 to d 160.00 Factory Setting: 1.00
 The coefficient K determines the multiplying factor for the user-defined unit.
The display value is calculated as follows:
U (User-defined unit) = Frequency Command * K (Pr.00-05)
H (actual output) = Actual output frequency * K (Pr.00-05)
Example:
A conveyor belt runs at 13.6m/s at motor speed 60Hz.
K = 13.6/60 = 0.23 (0.226667 rounded to 2 decimals), therefore Pr.00-05=0.23
With Frequency command 35Hz, display shows LED U and 35*0.23=8.05m/s.
(To increase accuracy, use K=2.27 or K=22.67 and disregard decimal point.)