Mitsubishi Electric F700 User Manual

130
Operation selection at power failure
and instantaneous power failure
4.12.2 Power failure-time deceleration-to-stop function (Pr. 261 to Pr. 266 )
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 156)
* When the setting of Pr. 21 Acceleration/deceleration time increments is "0" (initial value), the setting range is "0 to 3600s" and the setting increments are
"0.1s", and when the setting is "1", the setting range is "0 to 360s" and the setting increments are "0.01s"
When a power failure or undervoltage occurs, the inverter can be decelerated to a stop or can be decelerated
and re-accelerated to the set frequency.
Parameter
Number
Name
Initial
Value
Setting Range Description
261
Power failure stop
selection
0
0
Coasting to stop
When undervoltage or power failure occurs, the inverter
output is shut off.
1
When undervoltage or a power failure occurs, the inverter
can be decelerated to a stop.
2
When undervoltage or a power failure occurs, the inverter
can be decelerated to a stop.
If power is restored during a power failure, the inverter
accelerates again.
262
Subtracted frequency at
deceleration start
3Hz 0 to 20Hz
Normally operation can be performed with the initial value
unchanged. But adjust the frequency according to the
magnitude of the load specifications (moment of inertia, torque).
263
Subtraction starting
frequency
60Hz
0 to 120Hz
When output frequency ≥ Pr. 263
Decelerate from the speed obtained from output
frequency minus Pr. 262.
When output frequency < Pr. 263
Decelerate from output frequency
9999
Decelerate from the speed obtained from output
frequency minus Pr. 262.
264
Power-failure deceleration
time 1
5s 0 to 3600/ 360s *
Set a deceleration slope down to the frequency set in Pr. 266 .
265
Power-failure deceleration
time 2
9999
0 to 3600/ 360s *
Set a deceleration slope below the frequency set in Pr. 266 .
9999
Same slope as in Pr. 264
266
Power failure deceleration
time switchover frequency
60Hz 0 to 400Hz
Set the frequency at which the deceleration slope is
switched from the Pr. 264 setting to the Pr. 265 setting.
(1) Connection and parameter setting
⋅ Remove the jumpers across terminals R/L1-R1/L11 and
across terminals S/L2-S1/L21, and connect terminals R1/
L11 and P/+ and terminals S1/L21 and N/-.
⋅ When Pr. 261 is set to "1" or "2", the inverter decelerates to a
stop if an undervoltage or power failure occurs.
(2) Operation outline of deceleration to stop at
power failure
⋅ If an undervoltage or power failure occurs, the output
frequency is dropped by the frequency set in Pr. 262 .
⋅ Deceleration is made in the deceleration time set in Pr. 264.
(The deceleration time setting is the time required from Pr. 20
Acceleration/deceleration reference frequency to a stop.)
⋅ When the frequency is low and enough regeneration energy
is not provided, for example, the deceleration time (slope)
from Pr. 265 to a stop can be changed.
(3) Power failure stop mode (Pr. 261 = "1")
⋅ If power is restored during power failure deceleration, deceleration to
a stop is continued and the inverter remains stopped. To restart, turn
off the start signal once, then turn it on again.
Power supply
Remove the jumper
Inverter
S/L2
T/L3
S1/L21
P/+
N/−
R1/L11
R/L1
Connect terminals
R1/L11 and P/+
and terminals
S1/L21 and N/-.
Pr.264
Power-failure
deceleration time 1
Pr.265
Power-failure
deceleration
time 2
Time
Power supply
Output
frequency
Subtracted
frequency at
deceleration start
Pr.262
Power-failure
deceleration
time switchover
frequency
P
r.266
During deceleration at
occurrence of power failure
During stop at
occurrence of
power failure
STF
Y46
Time
Turn off STF once to make acceleration again
Power
supply
Output frequency
Pr.261 = 1
REMARKS
⋅ When automatic restart after instantaneous power failure is selected (Pr.
57
≠ "9999"), deceleration to stop function is invalid and the restart after
instantaneous power failure operation is performed.
⋅ After a power failure stop, the inverter will not start if the power supply is switched
on with the start signal (STF/STR) input. After switching on the power supply, turn
off the start signal once and then on again to make a start.
STF
Power supply
Y46
Not started as inverter
is stopped due to power
failure
ON
OFF
ON
Output
frequency
Time

Mitsubishi Electric F700 Specifications

General

Brand	Mitsubishi Electric
Model	F700
Category	Inverter
Language	English