Mitsubishi Electric FREQROL Manuel d'instructions Page 258

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Function assignment of external terminals Parameter
6 - 118
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 ter-
minal remained on.
Fig. 6-52:
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. 6-28: Activating the output shutoff by external signal or communication
NOTES The MRS signal is assigned to the terminal MRS in the initial setting. By setting "24" in any
of Pr. 178 to Pr.184 "Input terminal function selection", you can assign the RT signal to the
other terminal.
The MRS signal can shut off the output, independently of the PU, external or network opera-
tion mode.
Changing the terminal assignment using Pr. 178 to Pr. 184 "Input terminal function
selection" may affect the other functions. Make setting after confirming the function of each
terminal.
Pr. 17 = 0
PC
MRS
PC
MRS
Pr. 17 = 2
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