Chapter 5 Parameter Introductions
136
P8.02 Rate of length
Range: 0.001~30.00 【1.000】
P8.03 Correction Coefficient of length
Range: 0.001~1.000 【1.000】
P8.04 Shaft Diameter
Range: 0.01~100.0 cm 【10.00 cm】
P8.05 Deceleration point
Range: 50~100 % 【90 %】
P8.06 Deviation value
Range: Max[-200.0,P8.00]~200.0 mm
【0mm】
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.
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