Mitsubishi Electric FR-D720S SC EC, Instruction Manual

Page: 242 / 512

Function assignment of external terminals Parameter
6 - 92
MRS signal logic inversion
When Pr. 17 is set to "2", the MRS signal (output stop) can be changed to the normally closed
(NC contact) input specification. When the MRS signal turns on (opens), the inverter shuts off
the output.
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.
Fig. 6-44:
Connection of the MRS terminal in source
logic
I000011C
External MRS
Communication
MRS
Pr. 17
0 2 4
OFF OFF Operation enabled Output shutoff Output shutoff
OFF ON Output shutoff Output shutoff Output shutoff
ON OFF Output shutoff Output shutoff Operation enabled
ON ON Output shutoff Operation enabled Output shutoff
Tab. 6-12: Activating the output shutoff by external signal or communication
NOTES
When using an external terminal to input the MRS signal, the MRS signal shuts off the out-
put in any of the operation modes.
Changing the terminal assignment using Pr. 178 to Pr. 182 may affect the other functions.
Make setting after confirming the function of each terminal.
Pr. 17 = 0
PC
MRS
PC
MRS
Pr. 17 = 2