Wiring Of The Control Circuit - Mitsubishi FR-E 520S EC Installation Manual

Wiring of the Control Circuit

4.3
The following picture shows the arrangement of the terminal for the control circuit of the inverter:
Control logic
*
The control signal level can be adjusted with the jumper. At the factory the jumper on the EC
units is set to the "Source" position (positive logic, 24V DC corresponds to logical 1).
If you want to use negative logic (0V corresponds to logical 1) you must move the jumper to
the "Sink" position. Use tweezers or thin-nosed pliers to move the jumper.
Signal
FR-E 500 EC
Jumper
*
Terminal
STF
STR
RH, RM, RL
MRS
RES
Common sink for contact in-
SD
put/reference potential
PC control input common if
source logic type is activated
POW ER
ALAR M
A
RH
RM B
RL C
10
MRS
2
RES
SD
5
SD
AM 4
PC
PC SD
SE
SINK STF
SE
RUN STR
SD
FU
SOURC E
PR
- P1 + FAN
2
FAN
1
Terminal name Description
The motor rotates forward, if
a signal is applied to terminal
Forward rotation start
STF.
The motor rotates reverse, if
a signal is applied to terminal
Reverse rotation start
STR.
Up to 15 different output fre-
Multi-speed selection
quencies can be preset.
Turn on the MRS signal
(20ms or longer) to stop the
Output stop
inverter output.
Used to reset the protective circuit activated.
Turn on the RES signal for more than 0.1 second
RESET input
then turn it off.
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 optocouplers. The ter-
minal is isolated from the reference potential of
the control circuit.
Common output terminal for 24V DC / 0.1A po-
wer output (PC terminal).
24V DC/0.1A output
With negative logic and control via open collec-
tor 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
24V DC output and
is used as a common reference for the control in-
puts. This means that when positive logic is se-
lected (default setting of the EC units) the corre-
sponding control function is activated by
connecting its terminal to the PC terminal.
Wiring
RH A
RM B
RL C
MRS 10
RES 2
SD 5
AM 4
PC SD
SE STF
RUN STR
FU SD
When the STF
and STR signals
are turned on si-
multaneously,
the stop com-
mand is given.
Input terminal
function selec-
tion (Pr. 180 to
Pr. 183) changes
the terminal
functions.
17