Control Circuit Specifications - Mitsubishi Electric FR-E700 Series Instruction Manual

Control circuit specifications

3.4 Control circuit specifications
The functions of the terminals highlighted in grey can be adjusted with parameters 178 to 184 "Input
terminal function assignment" and parameters 190 to 192 "Output terminal function assignment" (re-
fer to section 6.10). The listed settings show the default configuration as shipped, which you can re-
store by resetting to the factory defaults.
Input signals
Terminal
RH, RM, RL
Tab. 3-9:
3 - 14
Name
Forward rotation
STF
start
Reverse rotation
STR
start
Multi-speed
selection
Reset
RES
Contact input com-
mon (sink)
SD
24V DC power sup-
ply common
24V DC
power supply,
contact input
PC
common
(source)
Safe stop input
S1
(Channel 1)
Safe stop input
S2
(Channel 2)
Input signals (1)
Description
Turn on the STF signal to start
forward rotation and turn it
off to stop.
Turn on the STR signal to start
reverse rotation and turn it off
to stop.
Multi-speed can be selected according to the
combination of RH, RM and RL signals.
Used to reset alarm output provided when pro-
tective function is activated.
Turn on the RES signal for more than 0.1s, then
turn it off.
Initial setting is for reset always. By setting Pr. 75,
reset can be set to enabled only at an inverter
alarm occurrence. Recover about 1s after reset is
cancelled.
A determined control function is activated, if the
corresponding terminal is connected to the ter-
minal SD (sink logic). The SD terminal is isolated
from the digital circuits via opto couplers.
The terminal is isolated from the reference poten-
tial of the analog circuit (terminal 5).
24V DC/0.1A output
With negative logic and control via open collector
transistors (e.g. a PLC) the positive pole of an
external power source must be connected to the
PC terminal. With positive logic the PC terminal is
used as a common reference for the control
inputs. This means that when positive logic is
selected (default setting of the EC units) the cor-
responding control function is activated by con-
necting its terminal to the PC terminal.
S1/S2 are safe stop signals for use with in con-
junction with an approved external safety unit.
Both S1/S2 must be used in dual channel form.
Inverter output is shutoff depending on shorte-
ning/opening between S1 and PC, S2 and PC. In
the initial status, terminal S1 and S2 are shorted
with terminal PC by shortening wire. Remove the
shortening wire and connect the safety relay
module when using the safety stop function.
Rated
Specifications
When the STF
and STR signals
are turned on
simultaneously,
the stop com-
Input resist-
mand is given.
ance: 4.7kΩ
Voltage at open-
ing:
21V to 26V DC
Contacts at
short-circuited:
4 to 6mA DC
—
Power supply
voltage range:
22V to 26.5V DC
Permissible load
current: 100mA
Input resi-
stance: 4.7kΩ
Voltage when
contacts are
open:
21V to 26V DC
When contacts
are shortcircui-
ted:
4 to 6mA DC
Wiring
Refer
to
Page
6-114
—
3-26
3-23