ELECTRIC INVERTER,S ZERO SERVO COMPLETION WIDTH.



ZERO SERVO COMPLETION WIDTH.

TO SET THE OUTPUT WIDTH OF ZERO SERVO COMPLETION SIGNAL , MULTI FUNCTION INPUT IS SET TO BE EFFECTIVE WHEN ZERO SERVO IS COMPLETED . ZERO SERVO COMPLETION SIGNALS OUTPUT IN CURRENT POSITION (ZERO SERVO START +/-ZERO SERVO COMPLETION WIDTH) IS ON . THE DELAY VALUE FROM ZERO SERVO STARTING POSITION TO ADMISSIBLE POSITION IS SET BY 4 TIMES OF PULSE QUANTITY OF PG (PULSE INCORDER ).

NOTE:
any of the multi function inputs (h 1- 0 1 --0 6)is allocated to zero servo command . the set value  is 72.when frequency (speed) command is below zero speed levee (b 2- 0 1) ,it will be zero servo status. if the operation commands input is still (on ),off, the output will be cut, and the loss ends. the lock strength of zero servo depends on (b 9-0 1), zero servo gain , the bigger the set of b 9-0 1 is the bigger the lock strength is . please adjust the lock strength after adjusting the speed control (a s r)  gain . when zero servo is output to the exterior, any of the constant among multi function output (h 2-0 1~03)is set be to zero servo completion width (value is 33), then zero servo completion width (b 9-02) is set be too effective. zero servo ending signal is in position of on within the range of zero servo starting position +/- zero servo completion width. the delay value from zero servo starting position to admissible position is set by 4 times of pulse quantity of pg (pulse encorder).set the allowable position displacement form the zero-servo rate of the PG ( pulse generator encoder )in use for instance ; for the encoder with 600 p/r,four times of pulse quantity is 2400 p/r .if zero servo command is in a position of off zero servo completion signal will be off. zero servo function , please avoid long time servo lock with 100% load , otherwise , it will result in inverters fault . please increase the power level of inverter when the servo retentiveness current drops to 10%.

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