Mitsubishi Electric 800 Series, Instruction Manual, Page: 46 / 727

Control circuit
INSTALLATION AND WIRING
45
2
 Output signal
Ty
p
e
Terminal
Symbol
Terminal name Terminal function description
Rated
specification
Refer
to
page
Rela
y
A1,
B1,
C1
Relay output 1 (fault
output)
1 changeover contact output that indicates that an inverter's
protective function has been activated and the outputs are
stopped.
Fault: discontinuity across B and C (continuity across A and
C), Normal: continuity across Band C (discontinuity across A
and C)
Contact capacity 230
VAC 0.3 A (power
factor = 0.4)
30 VDC 0.3 A
370
A2,
B2,
C2
Relay output 2 1 changeover contact output 370
Open collector
RUN Inverter running
Switched to LOW when the inverter output frequency is equal
to or higher than the starting frequency (initial value 0.5 Hz).
Switched to HIGH during stop or DC injection brake operation.
Permissible load 24
VDC (maximum 27
VDC) 0.1 A
(The voltage drop is
2.8 V at maximum
while the signal is
ON.)
LOW is when the
open collector output
transistor is ON
(conducted).
HIGH is when the
transistor is OFF (not
conducted).
370
SU Up to frequency
Switched to LOW when the output
frequency is within the set frequency
range

10% (initial value). Switched to
HIGH during acceleration/deceleration
and at a stop.
Fault code (4 bits)
output. (Refer to
page 388 .)
379
OL Overload warning
Switched to LOW when stall prevention
is activated by the stall prevention
function. Switched to HIGH when stall
prevention is canceled.
332
IPF
Instantaneous power
failure
Switched to LOW when an
instantaneous power failure occurs or
when the undervoltage protection is
activated.
515
FU Frequency detection
Switched to LOW when the inverter
output frequency is equal to or higher
than the preset detection frequency,
and to HIGH when it is less than the
preset detection frequency.
379
SE
Open collector output
common
Common terminal for terminals RUN, SU, OL, IPF, FU — —
Pulse
FM
For meter
Outputs a selected monitored item
(such as output frequency) among
several monitored items. The signal is
not output during an inverter reset.
The output signal is proportional to the
magnitude of the corresponding
monitoring item.
Use
Pr.55, Pr.56, and Pr.866 to set full
scales for the monitored output
frequency, output current, and torque.
(Refer to
page 357
.)
Output item:
Output frequency
(initial setting)
Permissible load
current 2 mA
For full scale
1440 pulses/s
357
NPN open
collector output
This terminal can be
used for open
collector outputs by
setting
Pr.291 .
Maximum output
pulse 50k pulses/s
Permissible load
current 80 mA
308
Analog
AM
Analog voltage
output
Output item:
Output frequency
(initial setting)
Output signal 0 to

10
VDC, Permissible
load current 1 mA
(load impedance 10
k

or more)
Resolution 8 bits
357