Alpha 6000 User Manual page 137

Chapter 5 Parameter Introductions
P8.02 Rate of length
P8.03 Correction Coefficient of length
P8.04 Shaft Diameter
P8.05 Deceleration point
P8.06 Deviation value
Note:
 This group of parameters is used for function of stop at fixed length.
 The inverter inputs counting pulse by terminals ( 35R5GB/37R5PB and above: X7
or X8 is defined as function 55, or X7 is defined as function 56 and X8 is defined as
function 57; 3004GB/35R5PB and below: X4 or X5 is defined as function 55, or
X4 is defined as function 56 and X5 is defined as function 58 ). In addition,
calculates length according to PG Pulse Range (P4.16) and Shaft perimeter (P8.04).
 Calculated length＝Number of count pulses/PG Pulse Range (P4.16) * shaft
perimeter (P8.04)
 The calculated length can be corrected through P8.02 (Rate of length) and P8.03
(correction coefficient of length), and the actual length is the corrected length.
Actual length ＝calculated length *Rate of length/ correcting coefficient of length
 If the actual length (P8.01) is less than and nearly to the preset length (P8.00), the
inverter will decelerate and run at low speed automatically. When actual length
(P8.01) ≥ preset length (P8.00), the operating frequency will be zero, and the
inverter will stop according to the stop mode. When the inverter restarts, it needs to
clear the actual length or increase the preset length. The preset length (P8.00) must
be larger than the actual length (P8.01), otherwise, the inverter will not start. As
shown in Fig.5-8-1.
136
Range: 0.001~30.00 【1.000】
Range: 0.001~1.000 【1.000】
Range: 0.01~100.0 cm 【10.00 cm】
Range: 50~100 % 【90 %】
Range: Max[-200.0,P8.00]~200.0 mm
【0mm】