Description Of Specific Functions
V260 Series High Performance Closed-Loop Vector Inverter User Manual
175
F8.1.25 Proportional gain 2
(ASR-P2)
Setting range: 0.1~2.00
Factory default: 0.80
F8.1.26 Integral time 2 (ASR-I2)
Setting range:0.0,0.01~50.00Sec.
Factory default: 2.50
F8.1.27 Differential coefficient
2(ASR-D2)
Setting range: 0.0, 0.01~10.00
Factory default: 0.0
F8.1.28 Differential output
filtering constant 2(ASR-DT2)
Setting range: 0.10~10.00 Sec.
Factory default: 1.00
The parameters are applied to adjust proportional gain of speed adjuster, integral time and differential
coefficient. Each parameter should be set as following:
1) Proportional gain P: As value is bigger, the response id faster, however the stability of system is worse and
overlarge gain can lead to revolution shock.
2) Integral time coefficient I: As value is greater, the response id faster, and the revolution over-adjusting is
greater, while the stability is worse. In general, the parameters are direct proportional to system inertia. When
inertia is great, the parameter also set with great value.
3) Differential coefficient D: it is the reverse to differential time constant; there is no need in general system
and it should be set to be zero. Differential adjusting in reality is a kind of trend forecasting adjustment; The
parameter set is bigger, the differential function is stronger. Proper differential set can fast the response
speed, improve the stability, and it is used to the system with requirements of less inertia and fast response.
4) Differential output filtering time constant DT: Differential output to the adjuster for a stage of inertia filtering
time constant is generally set direct proportion to system inertia.
F8.1.29 Maximum torque output
Setting range: 0.0~250.0%
Factory default: 190.0
F8.1.30 Minimum torque output
Setting range: -250.0~0.0%
Factory default: -190.0
The parameter is applied to set adjuster output amplitude and limit system's transient forward and backward
torque. Its set value is the percentage corresponding to rated torque.
7.34 PROTECTIVE PARAMETERS (GROUP F8.2)
F8.2.32 Excessive action of
revolution deviation (DEV)
Setting range: 0~3
Factory default: 0
F8.2.33 Over speed (OS)
detection action
Setting range: 0~3
Factory default: 1
The parameter is used to set excessive action of revolution deviation
(DEV)
and over speed
(OS)
detection
action.
0: No action
Inverter keeps on running without reporting any fault or warning message.
1: Alarm free stop
Inverter immediately blockades output and reports overlarge deviation of rotating speed
(Fu.018)
or over-
speed fault
(Fu.019)
, while electric motor freely coasts to stop
¾
Actual output torque is also limited by adjuster output lower limit amplitude [F1.4.47] and
should pick up the lower among the two. When running acceleration and deceleration, it is
mainly limited by electricity limit level.
