Mitsubishi Electric FR-F740-00023 Instruction Manual page 33

Control circuit specifications
(2) Output signals
Terminal Terminal
Symbol Name
A1,
Relay output 1
B1,
(Fault output)
C1
A2,
B2, Relay output 2
C2
Inverter
RUN
running
Up to
SU
frequency
Overload
OL
warning
Instantaneous
IPF
power failure
Frequency
FU
detection
Open collector
SE
output common
Analog current
CA
output
Analog voltage
AM
output
(3) Communication
Terminal Terminal
Symbol Name
PU
——
connector
Inverter
TXD+
transmission
TXD-
terminal
Inverter
RXD+
reception
RXD-
terminal
SG Earth
24
Description
1 changeover contact output indicates that the inverter
protective function has activated and the output stopped.
Fault: No conduction across B-C (Across A-C Continuity),
Normal: Across B-C Continuity (No conduction across A-C)
1 changeover contact output
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.
Switched low when the output
frequency reaches within the range of
±10% (initial value) of the set frequency.
Switched high during acceleration/
deceleration and at a stop.
Switched low when stall prevention is
activated by the stall prevention
function. Switched high when stall
prevention is cancelled.
Switched low when an instantaneous
power failure and under voltage
protections are activated.
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.
Common terminal for terminals RUN, SU, OL, IPF, FU
Select one e.g. output frequency from
monitor items. (Not output during
inverter reset.)
The output signal is proportional to the
magnitude of the corresponding
monitoring item.
With the PU connector, communication can be made through RS-485.
(for connection on a 1:1 basis only)
Conforming standard : EIA-485 (RS-485)
Transmission format : Multidrop link
Communication speed : 4800 to 38400bps
Overall length : 500m
With the RS-485 terminals, communication can be made through RS-485.
Conforming standard : EIA-485 (RS-485)
Transmission format : Multidrop link
Communication speed : 300 to 38400bps
Overall length : 500m
Alarm code (4bit)
output
Output item:
Output frequency
(initial setting)
Description
Rated
Refer to
Specifications
Contact capacity:
116
230VAC 0.3A
(Power
factor=0.4)
30VDC 0.3A
116
116
Permissible load
24VDC (27VDC
maximum) 0.1A
116
(A voltage drop is
3.4V maximum
when the signal is
on.)
116
Low is when the
open collector
output transistor
is on (conducts).
116
High is when the
transistor is off
(does not
conduct).
116
- - -- -- - -- -- -- - -- -- -- -- -- -
Load impedance
200 to 450
131
Output signal 0 to
20mADC
Output signal 0 to
10VDC
Permissible load
current 1mA 131
(load impedance
10k or more)
Resolution 8 bit
Refer to
189
191