Mitsubishi Electric FR-D720S SC EC, Instruction Manual

Page: 51 / 512

Wiring Control circuit specifications
FR-D700 SC EC 3 - 15
Output signals
Communication
Terminal Name Description
Rated
Specifications Refer to
Page
Rela
y
A, B, C
Relay output
(alarm output)
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.
Contact
capacity:
230V AC/0.3A
(Power
factor: 0.4) or
30V DC/0.3A
6-98
Open collector
RUN Inverter running
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.
Permissible
load:
24V DC (max.
27V DC), 0.1A
(A voltage drop
is 3.4V maxi-
mum when the
signal is on.)
SE
Open collector
output common Reference potential for the signals RUN and
SO.
— —
Analog output
AM
Analog voltage
output
Select one e.g. output fre-
quency (Pr. 158) from 18
monitor items.
The output signal is propor-
tional to the magnitude of
the corresponding monitor-
ing item.
Not output during inverter
reset.
Output item:
Output
frequency
(initial setting)
Output signal:
0–10V DC
Permissible
load current:
1 mA
(load imped-
ance:
≥
10k
Ω)
Resolution:
8 bit
6-118
Tab. 3-10: Output signals
Name Description Specification
Refer to
Page
RS485
PU connector
With the PU connector, communication can be
made through RS485.
Conforming standard:
EIA-485 (RS485)
Transmission format:
Multidrop
Communication speed:
4800 to 38400bps
Overall length: 500m
3-30,
6-193
Tab. 3-11: Communication signal
B
C
A