gefran VDI100 Series User Manual

■Speedsearchbasedoncurrentdetection
(a) Speed search at starting
Figure4.4.65Speedsearchatstarting
Run command
Search command
Output frequency
Output voltage
Speed search
operation
Output current
Speed search decel time (07-21)
Return to voltage at normal operation
Voltage recovery time (07-23)
(07-20)
t
t
t
t
t
V/f during speed search
(07-18)
(b) Speed search in recovery period of momentary power failure
Figure4.4.66Speedsearchinrecoveryperiodofmomentarypowerfailure
Run command
Search command
Output frequency
Output voltage
Speed search
operation
Output current
Speed search decel time (07-21)
Return to voltage at normal operation
Voltage recovery time (07-23)
(07-20)
t
t
t
t
t
V/f during speed search
(07-18)
Momentary power loss
Minimum b.b. time (07-18) t
t
Notes: If the minimum base block time (07-18) is longer than the momentary power failure time, the speed search starts
operation after the minimum base block time (07-18).
If the minimum base block time (07-18) is too short, the speed search operation begins immediately after power has
been restored.
Code Parameter Name / Range
07-29 Run Command Selection at the Action of DC Braking
(0) Not Allowable to Run
(1) Allowable to Run
When DC braking is active, then:
07-29=0: Inverter does not run again until DC braking stops.
07-29=1: Inverter can run again even if DC braking is in action.
200 VDI100 • Instruction manual

gefran VDI100 Series Specifications

General

Brand	gefran
Model	VDI100 Series
Category	Inverter
Language	English