Inverter Output Shutoff Signal (Mrs Signal, Pr. 17) - Mitsubishi Electric FR-A700 Instruction Manual

Function assignment of external terminals
6.14.2

Inverter output shutoff signal (MRS signal, Pr. 17)

The inverter output can be shut off from the MRS signal. The logic of the MRS signal can also
be selected.
Pr.
Name
No.
17
MRS input selection
Output shutoff signal
Turning on the output shutoff signal (MRS) during inverter running shuts off the output imme-
diately.
MRS
STF (STR)
Terminal MRS may be used as described below:
● When mechanical brake (e.g. electromagnetic brake) is used to stop motor.
The inverter output is shut off when the mechanical brake operates.
● To provide interlock to disable operation by the inverter.
With the MRS signal on, the inverter cannot be operated if the start signal is entered into
the inverter.
● Coast the motor to a stop.
When the start signal is turned off, the inverter decelerates the motor to a stop in the preset
deceleration time, but when the MRS signal is turned on, the motor coasts to a stop.
6 - 290
Initial Setting
Description
Value Range
0 Open input always
Close input always (NC contact input
2
specifications)
0
External terminal: Normally closed input
4 (NC contact input specifications)
Communication: Normally open input
Motor coasts to
stop
Time
ON
ON
Parameters referred to
178–189 Input terminal
function selection
Fig. 6-123:
Output shutoff signal
Parameter
Refer to
Section
6.14.1
I001325C