Drive Unit Output Shutoff Signal (Mrs Signal, Pr.17) - Mitsubishi Electric FR-E700EX Instruction Manual

Function assignment of external terminal and control
(2) Response time of each signal
 The response time of the X10 signal and MRS signal is within 2ms.
The response time of other signals is within 20ms.

4.12.2 Drive unit output shutoff signal (MRS signal, Pr.17)

The drive unit output can be shut off by the MRS signal. Also, logic for the MRS signal can be selected.
Parameter
number
17 MRS input selection
The above parameters can be set when Pr.160 Extended function display selection = "0". (Refer to page 182)
The motor coasts to stop
ON
MRS signal
STF (STR)
ON
signal
Setting value "0"
(initial value)
Drive unit
Output stop Output stop
MRS
SD
(3) Assign a different action for each MRS signal input from communication and external terminal
(Pr.17 = "4")
 When Pr.17 is set to "4", the MRS 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 useful to perform operation by communication with MRS signal from external terminal remained ON.
External MRS
OFF
OFF
ON
ON
REMARKS
 For MRS signal, assign the function by setting "24" to any of Pr.178 to Pr.184 (Input terminal function selection).
 When using an external terminal to input the MRS signal, the MRS signal shuts off the output in any of the operation modes.
NOTE
 Changing the terminal assignment using Pr.178 to Pr.184 (input terminal function selection) may affect the other functions.
Set parameters after confirming the function of each terminal.
140
Name Initial value
(1) Output shutoff signal (MRS signal)
 Turning ON the output shutoff signal (MRS) during drive unit running
 MRS signal may be used as described below.
(a)When mechanical brake (e.g. electromagnetic brake) is used to stop motor
(b)To provide interlock to disable operation by the drive unit
Time
(c) Coast the motor to a stop.
Setting value "2"
(2) MRS signal logic inversion (Pr.17)
Drive unit
 When Pr.17 is set to "2", the MRS signal (output stop) can be changed
MRS
SD
Communication MRS
OFF
ON
OFF
ON
Setting range
0
2
0
4
shuts off the output immediately.
The drive unit output is shut off when the mechanical brake operates.
With the MRS signal ON, the drive unit cannot be operated if the start
signal is entered into the drive unit.
When the start signal is turned OFF, the drive unit 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.
to the normally closed (NC contact) input specification. When the MRS
signal turns ON (opens), the drive unit shuts off the output.
0
Operation enabled
Output shutoff
Output shutoff
Output shutoff Operation enabled
Description
Normally open input
Normally closed input
(NC contact input specifications)
External terminal: Normally closed input
(NC contact input specifications)
Communication: Normally open input
Pr.17 Setting
2
Output shutoff Output shutoff
Output shutoff Output shutoff
Output shutoff Operation enabled
Output shutoff
4