Chziri ZVF9V-G/P, Руководство пользователя, Страница: 49 / 87

6.1 Schedule of Function Parameters 6.1 Schedule of Function Parameters
F1.10 Slip compensation coefficient Setting range: 0.50~2.00 Default setting: 1.00
Proceeding vector control over no speed sensor, this parameter is used to adjust
motor's stability precision. Increase this parameter when the motor has heavy loads
with lower speed and decrease this parameter vise versa.
F1.11 Motor pre-excitation selection Setting range: 0~1 Default setting: 0
If the motor is in the state of halting before it is started, it is supposed to build air-
gap flux
to get enough starting torque.
0: Conditionally valid
If this choice is selected, the motor will perform pre-excitation when the motor is
started, sustain for a period of time set by parameter F1.12 and then proceed
acceleration; or it will proceed control through multi-function terminals defined
with starting pre-excitation command (remained temporarily).
1
Always valid
When the inverter is started, it performs pre-excitation function over the motor
(always sustain 0.00Hz).
F1.12 Motor pre-excitation sustaining time Setting range: 0.1~1.0s Default setting: 0.2s
This parameter defines pre-excitation sustaining time of the motor in the mode of
vector control. In this state, rated pre-excitation current passes through the motor,
as if the motor is in the state of DC braking. Therefore in the mode of vector control,
DC braking is invalid. To realize the effect of DC braking, user may regulate the
function of pre-excitation and its sustaining time.
F1.13 Motor parameter self-learning Setting range: 0~1 Default setting: 0
0 No action
This indicates there is no action of static self-learning.
1
Static self-learning
If motor parameter self-learning is selected, press the RUN key, self-learning of the
motor will be started. This course can be finished automatically without any manual
intervention. During self-learning, the inverter does not respond to other operation
commands. After parameter self-learning is completed, this parameter will be cleared
automatically and the motor parameter received from self-learning will be saved in the
inverter's control panel. In other words, parameter F1.05~F1.08 will be updated
conditionally.
CAUTION
This parameter is valid only when vector control is validated
(F0.00=0) and the operation mode is controlled by operator panel
(F0.04=0)
Tips
If over current occurs during parameter self-learning, please
check if the motor's current matches with the inverter's rated
current. Before parameter self-learning, DO make sure the
motor is in the state of stop, otherwise self-learning cannot
perform normally. The advantage of static self-learning is that
motor parameter testing can be carried out even though there is
load on the motor's shaft.
F1.14 Velocity loop (ASR) proportional gain Setting range: 0.0~5.00 Default setting: 1.00
F1.15 Velocity loop (ASR) integral time Setting range: 0.01~10.00s Default setting: 2.00s
Parameter F1.14 and F1.15 are valid only for vector control and invalid for V/F control.
Increasing proportional gain may quicken dynamic response of the system, but over-
large may cause oscillation; Decreasing integral time may quicken dynamic response
of the system, but over-small may cause system's severe over-control and oscillation.
Generally, it is suggested to increase proportional gain as much as possible on the
premise that there is no oscillation of the system, and then adjust the integral time to
enable a faster dynamic response and a moderate over-control of the system.