2.2 Wiring
2-41
INSTALLATION AND WIRING
Chap 2
(7) Auxiliary power input terminals for control circuit R0, T0
(Types FRN0088E2
or above)
The inverter can be operated without power input to the auxiliary power input terminals for control circuit. However,
the inverter output signals and the keypad display will be shut off when the inverter main power is shut off and the
control power source is lost.
When it is desired to retain the alarm signal for the activation of the protective function even inverter main power
supply shut off, or when continuous display of the keypad is desired, connect these terminals to the power supply.
When the inverter input side has a magnetic contactor (MC), wire from the input side (primary side) of the magnetic
contactor (MC).
Terminal rating: AC 200 to 240 V, 50/60 Hz, maximum current 1.0 A (200 V series)
AC 380 to 480 V, 50/60 Hz, maximum current 0.5 A (400 V series)
When using the earth leakage breaker, connect terminals R0, T0 to the output side of the earth leakage
breaker.
When connections are made to the input side of the earth leakage breaker, the earth leakage breaker will
malfunction because the inver
ter input is three-phase and the terminals R0, T0 are single phase.
When
connecting to terminals R0, T0 to the input side of the earth leakage breaker, make sure that the
connection is done through an insulating transformer or, alternatively, through the auxiliary B contacts of
the magnetic contactor as shown in the figure below.
Figure 2.2-10 Connection of the Earth Leakage Breaker
When connecting with the PWM converter, do not connect power source directly to the inverter’s auxiliary
power input terminals (R0, T0) for control circuit. Insert an insulating transformer or the auxiliary B
contact
s of a magnetic contactor on the power supply side.
On connection examples for the PWM converter side, refer to
Converters, RHC Series”.
Figure 2.2-11 Example of connection of R0, T0 terminals in combination with PWM converter
(8) Auxiliary power input terminals for fan R1, T1 (Types FRN0203E2
or above)
These terminals are equipped on types FRN0203E2■-4 or below, but are not used ordinarily.
Connect the AC power source when using direct current power supply input (such as in combination with PWM
converters).
Also switch the fan power supply switching connectors “CN R”, “CN W”.
Terminal rating: AC 380 to 440 V/50 Hz, 380 to 480 V/60 Hz, maximum current 1.0 A (400 V series)
Circuit breaker or earth
leakage breaker
Transformer
for insulation
(100 VA)
Magnetic
contactor auxiliary
B contact
To Next Page
Loading...
