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Wiring
2.3.3 Terminal arrangement of the main circuit terminal, power supply and the motor
wiring
Three-phase 200V/400V class
Control circuit/output signal
Relay
A, B, C
Relay output
(fault output)
1 changeover contact output indicates that the inverter fault occurs.
Fault: discontinuity across B-C (continuity across A-C), Normal: continuity across B-C
(discontinuity across A-C) Contact capacity 230VAC 0.3A (power factor = 0.4) 30VDC 0.3A
Open collector
RUN Inverter running
Switched Low when the inverter output frequency is equal to or
higher than the starting frequency (initial value 0.5Hz).
Switched High during stop or DC injection brake operation.∗
Permissible load 24VDC
(Maximum 27VDC) 0.1A
(a voltage drop is 3.4V
maximum when the signal is
on)
∗ Low is when the open
collector output transistor is
ON (conducts). High is when
the transistor is OFF (does
not conduct).
FU Frequency detection
Switched Low when the inverter output frequency is equal to or
higher than the preset detected frequency and High when less
than the preset detected frequency.∗
SE
Open collector
output common
Common terminal of terminal RUN and FU.
Pulse
FM For meter
Used to output a selected monitored item (such as Output
frequency) among several monitored items. (Not output during
inverter reset.) The output signal is proportional to the
magnitude of the corresponding monitoring item.
Permissible load current 1mA
1440 pulses/s at 60Hz
Communication
— PU connector
With the PU connector, RS-485 communication can be established.
· Conforming standard: EIA-485 (RS-485) · Transmission format: Multi-drop link
· Communication speed: 4800 to 38400bps · Overall extension: 500m
— USB connector
FR Configurator can be operated by connecting the inverter to the personal computer through USB.
· Interface: conforms to USB1.1 · Transmission Speed: 12Mbps
· Connector: USB mini B connector (receptacle mini B type)
Note
y Set Pr. 267 and a voltage/current input switch correctly, then input an analog signal in accordance with the setting.
Applying a voltage with voltage/current input switch in "I" position (current input is selected) or a current with switch
in "V" position (voltage input is selected) could cause component damage of the inverter or analog circuit of output
devices.
y The inverter will be damaged if power is applied to the inverter output terminals (U, V, W). Never perform such wiring.
y indicates that terminal functions can be selected using Pr. 178 to Pr. 184 and Pr. 190 to Pr. 192 (I/O terminal function
selection).
y Terminal names and terminal functions are those of the factory set.
y When connecting the DC power supply, be sure to connect the plus side of the power supply to terminal P/+ and
minus side to terminal N/-. Opposite polarity will damage the inverter.
FR-E720-0.1K to 0.75K FR-E720-1.5K to 3.7K
FR-E740-0.4K to 3.7K
FR-E720-5.5K, 7.5K FR-E740-5.5K, 7.5K
Type
Terminal
Symbol
Terminal Name Description
MotorPower supply
N/-
P/+ PR
IM
R/L1 S/L2 T/L3
Jumpe
r
Motor
Power supply
N/-
P/+
PR
IM
R/L1 S/L2 T/L3
Jumper
Motor
Power supply
IM
N/-
P/+
PR
R/L1 S/L2 T/L3
Jumper
N/-
P/+
PR
R/L1 S/L2 T/L3
MotorPower supply
Jumper
IM