4-107
Hold Hold
Fref 1
Fref
2
*1
*2
Power
Supply
Forward
Run
Inhibit
ACC / DEC
Command
Frequency
Reference
Output
Frequency
Fref 1
Fref
2
ON ONOFF
t
t
t
t
t
Refer to 03-40 UP/ DOWN frequency width setting for using other functions of UP/ DOWN. (It is enabled in
inverter software V1.4)
Frequency reference retention is active when parameter 11-58 is set to 1 and the frequency reference is
saved when power is lost and retrieved when power is restored.
*1: When 11-58 = 1 and the operation command is active, the output frequency will accelerate to the
previously stored frequency command.
*2: When 11-58 = 0 and the operation command is active, the output frequency will accelerate to the lower
limit of frequency reference (00-13).
03-0X =10: Acceleration/deceleration 1 selection
03-0X =30: Acceleration/deceleration 2 selection
Refer to the "multi-function digital input terminals select acceleration/ deceleration time” in Table 4.4.1 and
Figure 4.4.6.
03-0X =11: Acceleration/deceleration inhibition command (hold command)
When activated suspends the acceleration / deceleration operation and maintains the output frequency at
current level.
If 11-58 = 1, the frequency reference value is saved when the acceleration/deceleration inhibition
command is active. Deactivating the acceleration / deceleration inhibition command resumes acceleration
/ deceleration.
If 11-58 = 1, the frequency reference value is saved when the acceleration/deceleration inhibition
command is active and even when powering down the inverter.
Refer to Fig.4.4.18. for an example.
Figure 4.4.18 Acceleration / deceleration inhibition command operation
*1. When 11-58 = 1, and acceleration / deceleration inhibit command is activated, the frequency reference
is stored even when powering down the inverter. When a run command is given (e.g. run forward) and the
acceleration / deceleration inhibit command is active, the inverter will accelerate to the previously stored
frequency reference.
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