Connection Of The High Power Factor Converter (Fr-Hc) - Mitsubishi Electric FR-D720-0.4K Instruction Manual

Connection of stand-alone option unit
(2) Connection example with the FR-BR(-H) type resistor
Three-phase AC
power supply
∗1
Connect the inverter terminals (P/+ and N/-) and brake unit (FR-BU2) terminals so that their terminal names match with each other.
(Incorrect connection will damage the inverter and brake unit.)
∗2
When the power supply is 400V class, install a step-down transformer.
∗3
The wiring distance between the inverter, brake unit (FR-BU2) and resistor unit (FR-BR) should be within 5m each. Even when the
wiring is twisted, the cable length must not exceed 10m.
∗4
The contact between TH1 and TH2 is closed in the normal status and is open at a fault.
∗5
A jumper is connected across BUE and SD in the initial status.
NOTE
Do not remove the jumper across terminals P/+ and P1 except when connecting a DC reactor.
2.4.3

Connection of the high power factor converter (FR-HC)

When connecting the high power factor converter (FR-HC) to suppress power harmonics, perform wiring securely as shown
below. Incorrect connection will damage the high power factor converter and inverter.
After making sure the wiring is correct, set the following parameters.
Pr. 19 Base frequency voltage (under V/F control) or Pr. 83 Rated motor voltage (under a control method other than V/Fcontrol) =
"rated motor voltage"
Pr. 30 Regenerative function selection = "2"
MC
MCCB
Three-phase
AC power
supply
∗1
Keep input terminals (R/L1, S/L2, T/L3) open. Incorrect connection will damage the inverter.
∗2
Do not insert an MCCB between the terminals P/+ and N/- (between P and P/+, between N and N/-). Opposite polarity of terminals N/- and P/+ will
damage the inverter.
∗3
Use Pr. 178 to Pr. 182 (input terminal function selection) to assign the terminals used for the X10, RES signal. (Refer to page 114)
∗4
Be sure to connect terminal RDY of the FR-HC to the X10 signal or MRS signal assigned terminal of the inverter, and connect terminal SE of the
FR-HC to terminal SD of the inverter. Without proper connecting, FR-HC will be damaged.
NOTE
The voltage phases of terminals R/L1, S/L2, T/L3 and terminals R4, S4, T4 must be matched.
Use sink logic (factory setting) when the FR-HC is connected. The FR-HC cannot be connected when source logic is
selected.
Do not connect a DC reactor to the inverter when FR-HC is connected.
Do not remove the jumper across terminals P/+ and P1.
34
MCCB MC
R/L1
S/L2
T/L3
Outside box
(FR-HCB)
Reactor 1
(FR-HCL01)
R R2 R2
S S2 S2
T T2 T2
∗2
T
MC
Motor
U
V IM
W
∗3
Inverter
P/+
∗1
N/-
∗3
5m or less
High power factor converter
MC1
MC1
MC2
MC2
Reactor 2
(FR-HCL02)
R3 R3 R4 R4
S3 S3 S4 S4
T3 T3 T4 T4
R
S
T
ON OFF
MC
FR-BR
∗4
P TH1
PR
TH2
FR-BU2
PR
A
P/+ B
∗1
N/- C
BUE
∗5
SD
(FR-HC)
Inverter
R/L1
U
S/L2 V
∗1
T/L3 W
P P/+
∗2
N N/-
∗4
RDY X10
∗3
RSO RES
∗3
SE
SD
Phase
detection
Motor
IM