Mitsubishi Electric FR-A802-P Instruction Manual page 35

Terminal connection diagrams
Wiring converter units and inverters
 Main circuit terminal
• Wire terminal P (+) on the converter unit to terminal P on the inverter, and do likewise for terminal N (-). Pair the masters
or the slaves (1 with 1 or 2 with 2). Otherwise, the converter unit and the inverter may be damaged.
• Use cables of 50 m or shorter each to connect the converter unit and the inverter (for terminal P or N).
• For the gauge of the wire across the main circuit terminals P/+ and N/- (P and P, N and N), refer to
Power supply

Do not install an MCCB for terminal P or N. Ensure correct connection in polarity of terminals P and N; failing to do so may damage the inverter.
 Control circuit terminal
• The control circuit terminals of the master inverter and master converter unit must be wired. Ensure that the terminals
are wired correctly so that the commands output from the converter are properly transmitted to the inverter. Otherwise,
the converter unit and the inverter may be damaged.
• Use each cable of 30 m or shorter to wire the control circuits.
Converter unit
RDA
RDB
IPF
RSO
SE

For the terminal used for the X10 signal input, set "10" in any of 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 be normally closed (NC). To change the contact state to normally open (NO), set Pr.599 =
"0".

For the terminal used for the X11 signal input, set "11" in any of Pr.178 to Pr.189 (Input terminal function selection) to assign the function.
For RS-485 or other communication operation where the start command is only transmitted once, use the X11 signal to keep the operation mode
before an instantaneous power failure.

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.
34
INSTALLATION AND WIRING
Converter unit
∗1
R/L1 P/+
N/-
S/L2
T/L3
R1/L11
S1/L21
Inverter
∗3
MRS(X10）
∗1
∗2
X11
RES
∗3
SD
Inverter
P/+
U
N/-
V
To motor
W
R1/L11
S1/L21
page 37.