Mitsubishi Electric FR-A872-E Instruction Manual page 35

 Connection between the converter unit and the inverter
Wire correctly to ensure the command transmission from the converter unit to the inverter. Otherwise, the converter unit and
the inverter may be damaged.
For the wiring length, refer to the following tables.
Location in the connection diagram Total wiring length
Between the terminals P and P and
the terminals N and N
Other control signal cables
For the cable gauge of the cable across the main circuit terminals P/+ and N/- (P and P, N and N), refer to
MCCB
MC
Power
supply
*1 Do not install an MCCB across terminals P/+ and N/- (between terminals P and P/+ or between terminals N and N/-). Connecting the opposite
polarity of terminals N/- and P/+ will damage the inverter.
*2 For the X10 signal input, set "10" in any parameter from Pr.178 to Pr.189 (Input terminal function selection) to assign the function. (The X10
signal is assigned to terminal MRS in the initial setting.)
The state of contact at terminal MRS is initially set to normally closed (NC). To change the contact state to normally open (NO), set Pr.599 = "0".
*3 For the X11 signal input, set "11" in any parameter from Pr.178 to Pr.189 (Input terminal function selection) to assign the function.
For RS-485 or any other form of communication where the start command is only transmitted once, use the X11 signal to save the operation
mode at the time of an instantaneous power failure.
*4 Always connect terminal RDA of the converter unit and terminal MRS (X10) of the inverter, and terminal SE of the converter unit and terminal SD
(sink logic) of the inverter. Otherwise, the converter unit may be damaged.
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2. INSTALLATION AND WIRING
2.4 Terminal connection diagrams
50m or shorter
30m or shorter
Converter unit
(FR-CC2)
∗1
R/L1 P/+ P/+
N/- N/-
S/L2
R1/L11
S1/L21
T/L3
R1/L11
S1/L21
∗4
RDA MRS(X10)
∗2
RDB
IPF X11
RES
RSO
∗4
SD
SE
Inverter
U
V
M
W
∗3
page 38.