Mitsubishi Electric FR-A700 Technical Manual page 49

Operation
Mode
DC injection Brake
DC injection brake
operated at not more than
enabled
DC injection brake
disabled
*1 Also stopped by the STOP key. (
*2 For multi-speed operation, the same operation is performed when RH, RM, RL signals are OFF.
[Pr. 13
Start frequency]
0.5Hz
Start signal
terminal
Across STF-SD
Across STR-SD
About 20ms
[Pr. 13
Start
frequency]
0.5Hz
Start signal
terminal
Across STF-SD
Across STR-SD
*1 The [Pr. 13 Starting frequency] (initial value 0.5Hz) may be set between 0 and 60Hz.
*2 If the next start signal is given during DC injection brake operation, the DC injection brake is disabled and restart is made.
*3 The [Pr. 11 DC injection brake operation time] ( initial value 0.5s) may be set between 0 and 10s.
*4 The frequency at which the motor is coasted to a stop is not more than the [Pr. 10 DC injection brake operation frequency] (initial
value is 3Hz; may be set between 0 and 120Hz) or not more than 0.5Hz.
*5 The settings of [Pr. 13 Starting frequency], [Pr. 11 DC injection brake operation time], and [Pr. 10 DC injection brake operation frequency]
are the initial values.
DC Injection Brake and Coasting to Stop
External Operation or Combined Operation
When [Pr. 79 = 0, 2, 3]
Terminals STF (STR)
turn OFF
*1
DC injection brake
[Pr. 10 DC injection brake
operation frequency]
Coasting to stop
at not more than
[Pr. 10 DC injection brake
operation frequency]
Refer to page
With DC injection brake
[Pr. 10
*1
DC injection brake operation frequency]
3Hz
ON
About 20ms
Start/Stop Timing Chart (for two-wire type)
Start signal switched ON
while DC injection brake
is being operated
*1
Forward
rotation 0.5Hz
0.5Hz
About
20ms
ON
ON
About 20ms About 20ms
Forward-Reverse Rotation Switch-Over Timing Chart
Terminals STF (STR)
trun ON and 0V
*2
across terminals 2-5
DC injection brake
at 0.5Hz or less
Coasting to stop
at 0.5Hz or less
382.)
0.5Hz
0.5s 0.5s
[Pr. 11
[Pr. 11
DC injection brake
DC injection brake
operation time]
ON
operation time]
*3
*3
About 20ms
*2 About 20ms About 20ms
Forward
rotation
0.5Hz
3Hz
Reverse
rotation
About 20ms
ON
42
SPECIFICATIONS
PU Operation or Combined Operation
When [Pr. 79 = 0, 1, 4]
STOP key
DC injection brake
operated at not more than
[Pr. 10 DC injection brake
operation frequency]
Coasting to stop
at not more than
[Pr. 10 DC injection brake
operation frequency]
Without DC injection brake
DC injection brake
not operated
0.5Hz
ON
About 20ms
[Pr.10 DC injection brake operation frequency]
3Hz With DC injection brake
0.5s
[Pr.11 DC injection brake operation time]
About 20ms
ON
Set frequency
changed to 0Hz
DC injection brake
at 0.5Hz or less
Coasting to stop
at 0.5Hz or less
*4
3Hz
t
Coasted
to a stop
*4
t
*3