Mitsubishi Electric FR-A700 Technical Manual page 63

1.4.12 Inverter output stop (MRS)
(1) Output shutoff signal
Turning ON the output shutoff signal (MRS) during
inverter running shuts OFF the output immediately.
Terminal MRS may be used as described below.
1) To stop the motor by mechanical brake (e.g.
electromagnetic brake)
The inverter output is shut off when the
mechanical brake is operated.
2) To provide interlock to disable operation by the
inverter
With the MRS signal ON, the inverter cannot be
operated if the start signal is given to the inverter.
3) To coast the motor to stop
When the start signal is turned OFF, the motor
decelerates to stop according to the preset
deceleration time, but when the MRS signal is
turned ON, the motor coasts to stop.
*1 For MRS signal in
D700
182 Input terminal function selection
function.
MRS signal
STF (STR)
signal
common
(common)
common
Pr.178 to
, set "24" to any of [
] to assign the
Motor coasts
to stop
Time
ON
ON
(2) MRS signal logic inversion
When [Pr. 17 = 2] , the MRS signal (output stop) can
be changed to the normally closed (NC contact) input
specification.
(opens), the inverter shuts off the output.
When
A700
signal from external terminal (output stop) can be
changed to the normally closed (NC contact) input,
and the MRS signal from communication can be
changed to the normally open (NO contact) input.
This function is used to perform operation by
communication with MRS signal from external
terminal remained ON.
Terminal MRS Function
[Pr. 17]
Setting Normally
open input
(Communication,
0
external
terminal)
2 —
4
(communication)
[Pr.17 = 0]
Inverter
Output
stop
MRS
SD
External
Communication
MRS
MRS Signal
Signal
OFF OFF
OFF ON
ON OFF
ON ON
56
SPECIFICATIONS
common
When the MRS signal turns ON
[Pr. 17 = 4], the MRS
E700 D700
Available
Inverters
A700
Normally
E700
closed input
D700
—
(Communication,
external
terminal)
(external
terminal)
(Initial value)
[Pr.17 = 2]
Inverter
Output
stop
MRS
SD
[Pr. 17] Setting
0 2
Operation Output
enabled shutoff
Output Output
shutoff shutoff
Output Output
shutoff shutoff
Output Operation
shutoff enabled
F700
—
4
Output
shutoff
Output
shutoff
Operation
enabled
Output
shutoff