Delta VFD-E

Chapter 4 Parameters|
Revision Jan. 2009, 06EE, SW--PW V1.12/CTL V2.12 4-55
01.20 Delay Time at 0Hz for Simple Position Unit: 0.01
01.21 Delay Time at 10Hz for Simple Position Unit: 0.01
01.22 Delay Time at 20Hz for Simple Position Unit: 0.01
01.23 Delay Time at 30Hz for Simple Position Unit: 0.01
01.24 Delay Time at 40Hz for Simple Position Unit: 0.01
01.25 Delay Time at 50Hz for Simple Position Unit: 0.01
Settings 0.00 to 600.00 sec Factory Setting: 0.00
 This simple position function is calculated by the measure of operation distance. When the
multi-function input terminal is set to 25 and it is ON, it will start to decelerate after getting the
delay time from Pr.01.20 to Pr.01.25 and get the final position.
 This is simple position function NOT the precision position function.
f
t
MI=25
t2tx
()
⎟
⎠
⎞
⎜
⎝
⎛
++
×=
2
S
2
ttt
n
xx
p
120
fn ×=
S: operation distance
n: rotation speed(revolution/second)
tx: delay time (sec)
t2: deceleration time(sec)
n: rotation speed(revolution/second)
P: pole number of motor
f: operation frequency
Assume that the radius of the 4-pole motor is r and rotation speed is n (rpm).
r
n
 Example 1:
Assume that motor speed is 50Hz, the delay time at 50Hz is 2 sec (Pr.01.25=2) and the
deceleration time from 50Hz to 0Hz is 10 seconds.
The rotation speed n = 120 X 50 /4 (rpm/min) = 25 rpm/sec
The revolution numbers = (25 X (2+12))/2 = 175 (revolutions)