Mitsubishi Electric 800 Series Instruction Manual page 71

Connection of stand-alone option units

Never connect the power supply to terminals R/L1, S/L2, and T/L3 on the inverter. Incorrect connection will damage the inverter and the
converter.

Connect between the inverter terminal P/+ and the converter terminal P/+ and between the inverter terminal N/- and the converter terminal N/-
for polarity consistency. Connecting opposite polarity of terminals P/+ and N/- will damage the converter and the inverter.

Remove the jumper across terminals P/+ and P1.

Confirm the correct phase sequence of three-phase current to connect between the FR-XCB reactor and the converter, and between the power
supply and terminals R/L1, S/L2, and T/L3.
Incorrect connection will damage the converter.

Be sure to connect the power supply and terminals R/L1, S/L2, and T/L3 of the converter. Operating the inverter without connecting them will
damage the converter.

Assign the X10 signal to any of the input terminals.

Install UL listed fuses on the input side of the FR-XCB reactor to meet the UL/cUL standards (refer to the FR-XC Instruction Manual for
information about the fuse).

Do not install an MCCB or MC between the reactor and the converter. Doing so disrupts proper operation.
CAUTION
 In the common bus regeneration mode, always connect between the converter terminal RYB and the
inverter terminal to which the X10 (MRS) signal is assigned and between the converter terminal SE
and the inverter terminal SD. If the terminals are not connected, the converter may be damaged.
NOTE
• The control logic (sink logic/source logic) of the converter and the inverter must be matched. The converter does not operate
properly if the control logic is not consistent with each other.
• (Refer to page 38
logic of the converter.)
• Keep the wiring length between terminals as short as possible.
• When the power is distorted or falls off sharply, the reactors may generate abnormal acoustic noise. This acoustic noise is
caused by the power supply fault and not by the damage of the converter.
Power regeneration mode
When connecting the multifunction regeneration converter (FR-XC) to suppress power harmonics, perform wiring securely as
follows. Incorrect connection will damage the multifunction regeneration converter and the inverter.
Turn OFF switch 1 (connection mode setting switch) in the function selection switch assembly (SW2). If the switch setting
does not match the actual wiring, the connection mode fault "E.T" occurs.
After making sure that the wiring is correct and secure, set "0 or 100" in Pr.30 Regenerative function selection. (Refer to the
Instruction Manual (Detailed) of the FR-A800 inverter.)
AC reactor
(FR-HAL)
MCCB MC
Power
supply
70
INSTALLATION AND WIRING
for the switching of the control logic. Refer to the FR-XC Instruction Manual for the switching of the control
∗4
∗6
MCCB
FR-XCL
∗2
∗7
Fuse
R/L1
∗7
Fuse S/L2
∗7
Fuse
T/L3
∗3
FR-XC
P4
∗2 ∗8
R2/L12 R2/L12
S2/L22 S2/L22
T2/L32 T2/L32
N/-
R/L1
S/L2
∗5
T/L3
R1/L11
S1/L21
Inverter
R/L1
S/L2
T/L3
R1/L11
S1/L21
Fuse
∗1
P/+
P1
∗1
Fuse N/-
X10(MRS)
RES
SD
U
V
IM M
W