Mitsubishi Electric FR-E800, Instruction Manual

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13. (T) Multi-Function Input Terminal Parameters
13.7 Inverter output shutoff
 Assigning a different action for each MRS signal input via
communication and external terminal (Pr.17 = "4 or 5")
• When Pr.17 = "4 or 5", the MRS signal input from an external terminal is normally closed (NC contact), and the MRS signal
input from communication is normally open (NO contact). This function is useful to perform operation via communication
while keeping the ON state of the MRS signal input from the external terminal.
 Operation when PU operation interlock enabled (Pr.79 = "7")
• When the X12 signal is not assigned to any input terminal while the PU operation interlock is enabled ( Pr.79 = "7"), the
MRS signal is used as the X12 signal. The logic for the MRS signal used as the X12 signal is changed by the Pr.17 setting.
• The operation when the PU operation interlock is enabled ( Pr.79 = "7") is as follows.
NOTE
• When using an external terminal to input the MRS signal, the MRS signal shuts off the output in any of the operation modes.
• The MRS signal is valid regardless of whether it is input through the external terminal or via network (except for the FR-E800-
SCE), but when the MRS signal is used as the Inverter run enable (X10) signal, input the signal through the external terminal.
• When the terminal assignment is changed using Pr.178 to Pr.189 (Input terminal function selection) , wiring may be
mistaken due to different terminal name and signal contents, or may affect other functions. Set parameters after confirming
the function of each terminal.
Parameters referred to
Pr.79 Operation mode selection

page 212
Pr.178 to Pr.189 (Input terminal function selection)

page 328
External MRS Communication MRS
Pr.17 setting
0, 1 2, 3 4, 5
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
Pr.17 setting MRS signal X12 signal MRS function X12 function
0, 1
Assigned Not assigned PU operation interlock (NO contact) —
Not assigned Assigned —
PU operation interlock (NO contact)
Assigned Assigned Output shutoff (NO contact)
2 to 5
Assigned Not assigned PU operation interlock (NC contact) —
Not assigned Assigned —
PU operation interlock (NO contact)
Assigned Assigned Output shutoff (NC contact)