Terminal Specifications; Terminal Functions - Fuji Electric FRENIC-HVAC User Manual

2.3 Terminal Specifications

2.3.1

Terminal functions

Main circuit and analog input terminals
Symbol
L1/R, L2/S, Main circuit
L3/T power inputs
U, V, W Inverter outputs Connect a three-phase motor.
R0, T0 Auxiliary power
input for the
control circuit
P1, P(+) DC reactor
P(+), N(-) DC link bus
R1, T1 Auxiliary main
circuit power
supply
G Grounding for
inverter and
motor
E1, E2 Grounding for
EMC filter
[13] Power supply
for the
potentiometer
[12]
Name
Connect the three-phase input power lines.
For a backup of the control circuit power supply, connect AC power
lines same as that of the main power input.
Connect a DC reactor (DCR) for power factor correction.
(For 230 V class series inverters of 75 HP or above and 460 V ones
of 150 HP or above and 575 V ones of 150 HP or above)
To be used for connecting a DC link bus.
For use of these terminals, consult your Fuji Electric representative.
Usually there is no need to do anything for these terminals. To be
used when the inverter is combined with a PWM converter.
(For 230 V class series inverters of 30 HP or above, 460 V ones of
60 HP or above and 575 V ones of 60 HP or above)
Grounding terminals for the inverter's chassis (or case) and motor.
Be sure to ground these terminals for safety and electric noise
reduction.
Usually there is no need to do anything for the EMC filter.
When the leakage current from the connected EMC filter causes
problems with the power supply system, removing screws from
terminals [E1] and [E2] could improve the problem. Note that doing
so loses the effect of the EMC filter so that the inverter is no longer
compliant with the EMC standards. To remove those screws,
consult your Fuji Electric representative.
(For 230 V class series inverters of 60 HP or below, 460 V ones of
125 HP or below and 575 V ones of 50 HP or below)
Power supply (+10 VDC) for frequency command potentiometer
(Potentiometer: 1 to 5kΩ)
The potentiometer of 1/2 W rating or more should be connected.
Analog setting (1) The frequency is commanded according to the external analog
voltage input voltage input.
• 0 to ±10 VDC/0 to ±100% (Normal operation)
• +10 to 0 VDC/0 to 100% (Inverse operation)
(2) In addition to frequency setting, PID command, PID feedback
signal, auxiliary frequency command setting, ratio setting,
upper/lower frequency limits, or analog input monitor can be
assigned to this terminal.
(3) Hardware specifications
• Input impedance: 22kΩ
• The maximum input is ±15 VDC, however, the voltage
exceeding ±10 VDC is handled as ±10 VDC.
• Inputting a bipolar analog voltage (0 to ±10 VDC) to
terminal [12] requires setting function code C35 to "0."
Functions
2-16