Inverter Output Shutoff - Mitsubishi Electric FR-A800 Series Instruction Manual

 Adjusting the response of input terminals (Pr.699)
• Response of the input terminals can be delayed in a range between 5 to 50 ms. (The following is the operation example
of the STF signal.)
STF
Pr.699 9999
NOTE
• The Pr.699 setting is invalid (no filter) for the following signals.
— Input signals which are already in the ON state when the power is turned ON
— Input signals used for the PLC function
— Inverter run enable (X10) signal, Simple position pulse train sign (NP) signal, Simple position droop pulse clear (CLR) signal

5.12.9 Inverter output shutoff

The inverter output can be shut off with the MRS signal. The logic of the MRS signal can also be selected.
Pr.
17
MRS input selection
T720
 Output shutoff signal (MRS signal)
Output frequency
MRS signal
STF (STR)
signal
• When the Output stop (MRS) signal is turned ON while operating the inverter, the inverter output is instantaneously shut
off.
• The response time of the MRS signal is within 2 ms.
• The MRS signal is used in the following cases.
To stop the motor using a mechanical brake (e.g.
electromagnetic brake)
To provide interlock to disable the motor operation by the
inverter
To coast the motor to a stop
524
5. PARAMETERS
5.12 (T) Multi-function input terminal parameters
Downloaded from ManualsNet.com
OFF
ON
Pr.699 Pr.699
Initial
Name Setting range
value
0
2
0
4
Motor coasts
to stop
Time
ON
ON
Application
search engine
Time
Normally open input
Normally closed input (NC contact input specification)
External terminal: Normally closed input (NC contact input
specification)
Communication: Normally open input
(Initial
Setting value "0" Setting value "2"
value)
Inverter
MRS
SD
The inverter output is shut off when the mechanical brake operates.
With the MRS signal ON, the motor cannot be driven by the inverter even if
the start signal is input to the inverter.
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.
Description
Inverter
MRS
SD
Description