Terminal Functions And Wiring Order - Fuji Electric FRENIC-HVAC Manual

2.2.4 Terminal functions and wiring order

Main circuit terminals and grounding terminals
The table below shows the order of wiring and terminal functions. Carry out wiring in the order shown below.
Classifi- Order of
cation wiring
Primary grounding
terminals for inverter
enclosure
Secondary grounding
terminals for motor
Inverter output
terminals
Auxiliary control power
input terminals
Auxiliary main power
input terminals
Main
circuit
(Note)
DC reactor connection
terminals
DC link bus terminals
Main circuit power input
terminals
Switching connectors
Control
Control circuit terminals
circuit
(Note) Do not make wiring to unassigned main circuit terminals (marked with NC). For details about the terminal
block, refer to Section 2.2.3 "Terminal arrangement diagrams and screw specifications."
Wiring of Auxiliary control power input terminals
Auxiliary control power input terminals R0 and T0.
Terminal rating: 200V class series ；200 to 240VAC，50/60Hz，Maximum current 1.0A
200V class series ；200 to 230VAC，50/60Hz，Maximum current 1.0A
400V class series ；380 to 480VAC，50/60Hz，Maximum current 0.5A
Auxiliary main power input terminals R1 and T1
(on 200V class series inverters of 22 kW (30HP) or above, and 400V class series inverters of 45 kW
(60HP) or above)
Terminal rating: 200V class series: 200 to 220 VAC /50 Hz, 200 to 230 VAC/60 Hz: Maximum current 1.0 A
400V class series: 380 to 440 VAC /50 Hz, 380 to 480 VAC/60 Hz
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Table 2.4 Order of Wiring and Functions of Main Circuit Terminals
Name Symbol
G
G
U, V, W
R0, T0
R1, T1
P1, P(+)
P(+), N(-)
L1/R, L2/S,
L3/T
CN UX, CN
R, CN W
See Table
2.5.
500 kW (800HP) or below：Maximum current 1.0 A
630/710 kW (900/1000HP)：Maximum current 2.0 A
Two grounding terminals (
power supply wiring (primary circuit) or motor wiring
(secondary circuit). Be sure to ground either of the two
grounding terminals for safety and noise reduction.
Connect the secondary grounding wire for the motor to the
grounding terminal ( G).
Connect the three wires of the 3-phase motor to terminals
U, V, and W, aligning the phases each other. (*1)
Connect the same AC power as for the main circuit to these
terminals as a control circuit power backup.
It is not normally necessary to connect anything to these
terminals. They are used when connecting to a DC bus.
For more information, see section 4-11 of the User's Manual.
(on 200V class series inverter of 22kW (30HP) or above and
400V ones of 45kW (60HP) or above)
Connect a DC reactor (DCR) to improve the power factor.
(on 200V class series inverter of 55 to 90kW (75 to 125HP)
or 400V ones of 110 kW (150HP) or above)
A DC link bus is connectable to these terminals.
When you need to use the DC link bus terminals P(+) and
N(-), consult your Fuji Electric representative.
The three-phase input power lines are connected to these
terminals. (*2)
If the power wires are connected to other terminals, the
inverter will be damaged when the power is turned ON.
These are the main circuit switching connectors. For more
information, see "2.2.5 Switching connectors" in this
instruction manual.
Route the wiring of the control circuit as far from that of the
main circuit as possible. Otherwise, electric noise may
cause malfunctions.
When the Enable function is not to be used, short-circuit
terminals [EN1] and [PLC] and terminals [EN2] and [PLC]
using jumper wires.
2-10
Functions
G) are not exclusive to the
(18.5kW (25HP) or below)
(22kW (30HP) or above)