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Function assignment of external terminals and CC-Link communication virtual terminals
5.13.2 Inverter output shutoff signal (MRS signal, Pr. 17)
The inverter 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 User group read selection = "0". (Refer to page 197)
The motor coasts to stop
ON
MRS signal
STF (STR)
ON
signal
REMARKS
The MRS signal is initially assigned to a virtual terminal of CC-Link communication. Set "24" in one of Pr. 180 to Pr. 184 (input
terminal function selection) to assign the MRS signal to another virtual terminal.
NOTE
Changing the assignment of a virtual terminal of CC-Link communication with Pr. 180 to Pr. 184 (input terminal function
selection) may affect other functions. Set parameters after confirming the function of each virtual terminal
Parameters referred to
Pr. 180 to Pr. 184 (input terminal function selection)
166
Name
Initial Value
(1)
Turning ON the output shutoff signal (MRS) during inverter running
shuts off the output immediately.
MRS signal may be used as described below.
(a) When mechanical brake (e.g. electromagnetic brake) is used to stop
(b) To provide interlock to disable operation by the inverter
Time
(c) Coast the motor to a stop.
(2)
to the normally closed (NC contact) input specification. When the MRS
signal turns ON (opens), the inverter shuts off the output.
Setting Range
0, 4
0
2
Output shutoff signal (MRS signal)
motor
The inverter output is shut off when the mechanical brake operates.
With the MRS signal ON, the inverter cannot be operated if the start
signal is entered into 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.
MRS signal logic inversion (Pr. 17)
When Pr. 17 is set to "2", the MRS signal (output stop) can be changed
Refer to page 163
Description
Normally open input
Normally closed input
(NC contact input specifications)
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