Mitsubishi Electric FR-F740 EC Instruction Manual page 57

Wiring
Output signals
Terminal
A1, B1, C1
A2, B2, C2
Tab. 3-8: Output signals (1)
FR-F700 EC
Name
Relay output 1
(alarm output)
Relay output 2
RUN Inverter running
SU Up to frequency
OL Overload alarm
Instantaneous
IPF
power failure
Frequency
FU
detection
Open collector
SE
output common
Description
The alarm is output via relay contacts. The
block diagram shows the normal operation and
voltage free status. If the protective function is
activated, the relay picks up.
B1 A1
C1
Switched low when the inverter output fre-
quency is equal to or higher than the starting
frequency (initial value 0.5Hz).
Switched high during stop or DC injection
brake operation.
The SU output supports a
monitoring of frequency set-
ting value and frequency
current value. The output is
switched low, once the fre-
quency current value (out-
put frequency of the
inverter) approaches the
frequency setting value
(determined by the setting
value signal) within a preset
range of tolerance (Pr. 41).
Switched high during accel-
eration/deceleration and at
a stop.
The OL is switched low, if
the output current of the
inverter exceeds the cur-
rent limit preset in Pr. 22
and the stall prevention is
activated. If the output cur-
rent of the inverter falls
below the current limit pre-
set in Pr. 22, the signal at
the OL output is switched
high.
The output is switched low
for a temporary power fail-
ure within a range of
15ms ≤ tIPF ≤ 100ms or for
under voltage.
The output is switched low
once the output frequency
exceeds a value preset in
Pr. 42 (or 43). Otherwise the
FU output is switched high.
Reference potential for the signals RUN, SU,
OL, IPF, and FU. This terminal is isolated from
the reference potential of the control circuit SD.
Control circuit specifications
Rated
Specifications
Contact
capacity:
230V/0.3A AC
(Power
factor: 0.4)
or
30V/0.3A DC.
Permissible
load:
24V DC, 0.1A
(A voltage drop
is 3.4V maxi-
Alarm code
mum when the
(4 bit) (Refer to
signal is on.)
section 6.12.2)
—
Refer to
Page
6-120
6-120
6-120
6-120
6-120
6-120
6-120
—
3 - 19