Description Of Specific Functions
V260 Series High Performance Closed-Loop Vector Inverter User Manual
173
F8.0.06 PG rotation direction
Setting range: 0, 1
Factory default: 0
In the system of inductive vector controlling, frequency inverter output phase sequence (depending on the
connection order between the motor and frequency inverter U, V, W) and the connection order between
pulses of encoder Phase A and Phase B should keep uniform. Or it can't function normally and cause the
Fu.020
fault or 0 speed shock when starting. Then it can be solved with modifying the parameter.
F8.0.09 Revolution check cycle
Setting range: 1~5ms
Factory default: 2ms
When revolution feedback channel selects an encoder, the parameter sets speed check cycle.
The parameter should set smaller values; Overlarge revolution check cycle may lead to unstable closed-loop
running and decelerate response. When use larger check cycle for ensuring the exactness of measuring
speed, please lower the proportionality factors F8.1.21, F8.1.25 of revolution closed-loop regulator and
enlarge integral time constants F8.1.22, F8.1.26 moderately.
F8.0.11 Loss of rotational feedback
signal delay
Setting range: 0.01~5.00Sec.
Factory default: 2.00
F8.0.12 Power failure speed
Setting range: 0~20.0%
Factory default: 0.0
When set revolution is bigger than the wire breakage zero speed signal level (its set value is relative to the
percentage of the largest set speed [
F8.0.02
]), while feedback speed is smaller than wire breakage zero
speed signal level, and revolution of frequency inverter checks wire breakage protective function after
keeping the set time of
F8.0.11
.
F8.0.13 Rotational feedback sensitivity
Setting range: 0.1~100.0
Factory default: 5.0
If speed measuring loop interference is great, it can enlarge
[F8.0.13]
to prevent wrong judgments from
interference; otherwise decrease the set value to strengthen the response speed of the system to wire
breakage check.
F8.0.14 Rotational feedback filter time
Setting range: 1~50ms
Factory default: 2ms
Filtering time coefficient of set revolution feedback in this parameter is available to all of the speed measuring
modes (channels). When use encoder for speed measuring, the function is similar to check cycle parameter
(
F8.0.09
), therefore there is a need to set smaller values for the system of fast-speed response.
F8.0.15 Rotational feedback
minimum value (not PG)
Setting range: 0~30000rpm
Factory default: 0
F8.0.16 Rotational feedback
maximum value (not PG)
Setting range: 0~30000rpm
Factory default: 1500
The parameter is used to set relations between revolution feedback signal (feedback channel 1~4) and the
corresponding to the motor feedback.
¾
Systems of tension control or hoisting equipment, etc, which may lead to motor shaft
side-pulling, may result in Fu.020 fault and at this moment please shield the protective
function (FF.1.22 = # 0 # #).
