Fuji Electric FRENIC-HVAC User Manual page 139

[ 5 ] Basic connection diagrams
 RHC7.5-2C to RHC90-2C (Applicable inverters: FRN001AR1-2U to FRN125AR1S-2U)
 RHC7.5-4C to RHC220-4C (Applicable inverters: FRN001AR1-4U to FRN350AR1S-4U)
MC Lf
Power
supply
e
f
(*3)
200 V or below
(*1)
Symbol Part name
Lr Boosting reactor
Lf Filtering reactor
Cf Filtering capacitor
Rf Filtering resistor
R0 Charging resistor
F AC fuse
73 Magnetic contactor for charging circuit
(*1) For the 400 V class power supply, connect a stepdown transformer to limit the voltage of the sequence circuit to 220 V or
below.
(*2) Be sure to connect the auxiliary power input terminals R0 and T0 of the PWM converter and the inverter to the main
power input lines via B contacts of magnetic contactors of the charging circuit (73 or MC). When the PWM converter is
to be connected to an ungrounded power supply, an insulation transformer is required. For details, refer to the PWM
Converter Instruction Manual (INR-HF51746).
(*3) Inverters having terminals R1 and T1 supply power to the AC fan via those terminals, so connect them to the main power
without going through the MC's B contacts or 73.
(*4) Set fan power supply switching connectors CN R and CN W on the NC and FAN (73X) positions, respectively.
(*5) Construct a sequence in which a run command is given to the inverter after the PWM converter becomes ready to run.
(*6) Assign the external alarm THR to any of terminals [X1] to [X7] on the inverter.
(*7) Wiring for terminals L1/R, L2/S, L3/T, R2, T2, R1, S1, and T1 should match with the phase sequence.
When the inverter is used in combination with the PWM converter, be sure to remove grounding
screws of the EMC filter built in the inverter from terminals [E1] and [E2]. Failure to do so results
in increased heating of capacitors inside the inverter so that they may be broken. Further, the
effect of the EMC filter will not be expected.
If the grounding screws of the EMC filter are removed, the inverter is no longer compliant with
the EMC standards.
CU (Charging box)
R0
11
12
13
Lr
1
2
3
73
Rf
Cf
MC or 73
(*2)
i j
Ready
MC RUN
FX
to run
a
b 73
STOP
RUN
MC RUN FX 73
When no CU (Charging box) is used
4-23
Converter
F
4
L1/R P(+)
5
L2/S
6
L3/T N(-)
R2
R2
i
T2
T2
j
e
f
G
c
R1 Y5A
d
S1 Y5C
T1 30A
R0 30B
T0 30C
73A
a
73C
RUN
b
RUN
RST
CM
E(G)
R0
Converter
Lr
F
L1/R
L2/S
F
L3/T
73
R2
T2
4.4 Options
Inverter
P(+) U
M
V
３～
N(-) W
R0
c d (*5)
T0
FX
R1 FWD
(*4)
T1
CM
13
(*6)
X7 (THR) 12
CM 11
30A
30B
30C
G