User Manual of EM760 High-Performance Inverter When the inverter receives the running command, wire disconnection detection will be performed after the set time. If the tens place of F27.20 is set to 0 and the inverter decelerates to this frequency, wire disconnection will not be detected. (This function will not be enabled until the output frequency of the inverter must exceed this frequency after the soft start time and be lower than this frequency after deceleration.) The set time ofF27.23 is calculated when the wire disconnection is identified. According to the setting of F27.24, the operating frequency in this period is reverse during unwinding and positive during winding.
F27.25 and F27.26 are not valid until one output terminal is defined as “brake control” (67# function). When the output frequency ofthe inverter drops to the set value ofF27.25, the brake control terminal will be valid and maintained (the brake mode 1 is enabled). It will be invalid after the set time of F27.26. When the brake control terminal is valid, the inverter will stop freely. There is no response to the running command when the brake control terminal is valid. IfF27.26 is set to 0.0, the brake control terminal will remain valid and can be reset by the brake reset terminal or protection reset terminal.
190 Function code Function code name Parameter description Unit Default setting Attribute F27.22 Lower limit of material cutoff detection after parking 0.00~60.00 Hz 5.00 ● Function code Function code name Parameter description Unit Default setting Attribute F27.23 Time of continuous running after material cutoff 0.0~60.0 s 10.0 ● F27.24 Frequency of continuous running after material cutoff 0.00~Fmax Hz 5.00 ● Function code Function code name Parameter description Unit Default setting Attribute F27.25 Brake signal output frequency 0.00~Fup Hz 2.50 ● F27.26 Braking signal duration 0.0~100.0 s 5.0 ● Function code Function code name Parameter description Unit Default setting Attribute F27.27 Minimum frequency of wiring detection 0.00~20.00 Hz 10.00 ● F27.28 Judgment time for invalid cable signal 0.1~20.0 s 10.0 ● F27.29 Judgment time for valid cable signal 0.1~20.0 s 2.0 ●