Output Frequency - Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual

• When Pr.59 ≠ "0" (remote setting function valid), the functions of the RH, RM and RL signals are changed to acceleration
(RH), deceleration (RM) and clear (RL).
Inverter
Forward
rotation
STF
Acceleration
RH
Deceleration
RM
Clear
RL
SD
Connection
diagram for remote setting
 Acceleration/deceleration operation
• When the acceleration signal (RH) is turned ON, the set frequency increases. The increased speed at this time is
determined by the setting of Pr.44 Second acceleration/deceleration time. Turning OFF the RH signal stops increasing
the set frequency and run the motor at the frequency at that time.
• When the deceleration signal (RM) is turned ON, the set frequency decreases. The decreased speed at this time is
determined by the setting of Pr.45 Second deceleration time. When Pr.45 = "9999", the deceleration speed is the same
as Pr.44 setting. Turning OFF the RM signal stops decreasing the set frequency and runs the motor at the frequency at
that time.
• By setting Pr.59 = "11 to 13", the speed can be decelerated to the frequency lower than the main speed (set by the External
operation frequency (except multi-speed setting) or PU operation frequency).
Main speed
Minimum
frequency
0
Forward rotation(STF)
Acceleration(RH)
Deceleration(RM)
NOTE
• While the RT signal is OFF, Pr.44 Second acceleration/deceleration time and Pr.45 Second deceleration time are used
as the set frequency accelerating/decelerating time at turn ON of the acceleration/deceleration signal. If the Pr.7 and Pr.8
settings are longer, the acceleration/deceleration time set by Pr.7 and Pr.8 are applied.
While the RT signal is ON, Pr.44 and Pr.45 settings are used as the acceleration/deceleration time regardless of the Pr.7 and
Pr.8 settings.
 Output frequency
• During External operation, the remotely-set frequency set with RH and RM signals is added to the terminal 4 input and
External operation mode frequency (PU operation mode frequency when Pr.79 = "3" (External and PU combined
operation)) except multi-speed setting. (When compensating analog input, set Pr.28 Multi-speed input compensation
selection = "1". If the RH and RM signals are used for acceleration/deceleration while the frequency is set by analog
voltage input (terminal 2 or 4, selected by Pr.28 = "0"), the auxiliary input via terminal 1 is disabled.)
• During PU operation, the remotely-set frequency set with RH and RM signal operation is added to the PU running
frequency.
360
5. PARAMETERS
5.8 (F) Setting of acceleration/deceleration time and acceleration/deceleration pattern
10
Set frequency
2
∗1
5
Acceleration (RH)
Deceleration (RM)
Clear (RL)
Forward rotation (STF)
Power supply
∗1 External operation frequency (other than multi-speed) or PU running frequency
Pr.59 = " 1, 2, 3"
Decelerates to the main speed
Pr.59 = " 11, 12, 13"
Decelerates to the minimum frequency
Time
ON
ON
ON
0Hz
0
ON ON
ON
ON
When Pr.59 = "1, 2, 11, 12" When Pr.59 = "1, 11"
When Pr.59 = "3, 13"
When Pr.59 = "2, 3, 12, 13"
ON
ON
ON
ON
ON
Time
ON
ON