Fuji Electric FRENIC-AQUA series, User Manual

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5.1 Mounting and Wiring the Inverter
5-9
Chap. 5
PR
EP
AR
A
T
IO
N AND
TEST
RUN
5.1.7 Wiring for control circuit terminals
In general, the covers of the control signal wires are not specifically designed to withstand a high voltage (i.e.,
reinforced insulation is not applied). Therefore, if a control signal wire comes into direct contact with a live
conductor of the main circuit, the insulation of the cover might break down, which would expose the signal wire to
a high voltage of the main circuit. Make sure that the control signal wires will not come into contact with live
conductors of the main circuit.
Failure to observe these precautions could cause electric shock or an accident.
Noise may be emitted from the inverter, motor and wires.
Take appropriate measures to prevent the nearby sensors and devices from malfunctioning due to such noise.
An accident could occur.
Table 5.2 lists the symbols, names and functions of the control circuit terminals. The wiring to the
control circuit terminals differs depending upon the setting of the function codes, which reflects the
use of the inverter. Route wires properly to reduce the influence of noise.
Table 5.2 Symbols, Names and Functions of the Control Circuit Terminals
Classifi- cation
Symbol Name Functions
[13] Power supply for
the potentiometer Power supply (+10 VDC) for frequency command potentiometer
(Potentiometer: 1 to 5k
Ω
)
[12]
Analog setting
voltage input The frequency is commanded according to the external analog voltage
input.
[C1] Analog setting
current input
PTC thermistor
input The frequency is commanded according to the external analog current
input.
Connects PTC (Positive Temperature Coefficient) thermistor for motor
protection.
[V2] Analog setting
voltage input The frequency is commanded according to the external analog voltage
input.
Analog inpu
t
[11] Analog common Common for analog input/output signals
[X1] Digital input 1
[X2] Digital input 2
[X3] Digital input 3
[X4] Digital input 4
[X5] Digital input 5
[X6] Digital input 6
[X7] Digital input 7
(1) Various signals such as "Coast to a stop," "Enable external alarm trip,"
and "Select multi-frequency" can be assigned to terminals [X1] to
[X7], [FWD] and [REV] by setting function codes E01 to E07, E98,
and E99.
(2) Input mode, i.e. SINK/SOURCE, is changeable by using the slide
switch SW1.
(3) The logic value (1/0) for ON/OFF of the terminals [X1] to [X7],
[FWD], or [REV] can be switched. If the logic value for ON of the
terminal [X1] is "1" in the normal logic system, for example, OFF is
"1" in the negative logic system and vice versa.
[FWD] Run forward
command Short-circuiting terminals [FWD] and [CM] runs the motor in the forward
direction and opening them decelerates the motor to a stop.
Digital input
[REV] Run reverse
command Short-circuiting terminals [REV] and [CM] runs the motor in the reverse
direction and opening them decelerates the motor to a stop.