Control Parameter (Group Pa) - V&T E5-H Series User Manual

6.11 Control Parameter (Group PA)

PA.00
PA.01
Carrier frequency has an important impact on operations of inverter and motor. When carrier frequency
increases, the loss, temperature rise and noise of motor will decrease. If carrier frequency decreases, the
temperature rise of inverter itself as well as the leakage current of motor and its external radiation
disturbance will decrease.
PA.01 can determine automatically the most suitable carrier frequency according to the temperature of
inverter.
0: Non−auto adjustment, carrier frequency will not be adjusted automatically according to the
temperature of inverter. Under favorable circumstances as regards ventilation and heat sink, all loads
shall operate with low noise. Set PA.00 with higher carrier frequency and set PA.01 to 0.
1: Auto−adjustment; inverter can adjust automatically carrier frequency through temperature check
according to the weight of load. Maintain continuously reliable operation by keeping operating with low
noise at low loads and controlling the temperature of inverter at heavy load.
PA.02
The function will be enabled when operating under V/F control (when P0.03=0 or 1).The function will help
the inverter to keep the motor rotational speed constant if loads vary or under heavy loads.
PA.04
PA.05
PA.04 current limit motion selection:
0: Disabled. Disabled for both processes of constant speed and acceleration/deceleration.
1: Enabled. Enabled for both processes of constant speed and acceleration/deceleration.
Generally, when setting speed or motor load varies sharply, output current of inverter may reach beyond
over current protection value point, resulting over current error. Current limit function reduces effectively
occurrences of over current errors as inverter controls instantaneous output current and keep the sharply
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E5−H High Performance Universal Inverter
Carrier frequency
Carrier frequency automatic adjustment selection
V/F control slip compensation gain
Motor slip
Motor slip
Figure 6−33 V/F control slip compensation gain
Current limit action selection
Current limit value
Chapter 6 Parameter Description
User Manual
0.7 ~ 16.0 kHz(Factory)
0 ~ 1(1)
0.0 ~ 300.0 %(100.0%)
Inverter load
Inverter load
0~1(1)
20.0~200.0 %(160.0%)