5
3.
SPECIFICATIONS OF WIRING AND TERMINALS
3.1 Terminal connection diagram (Japanese version)
FR-S520-0.1K to 3.7K (-R) (-C)
Power factor improving
DC reactor
(FR-BEL: Option)
3-phase AC
power supply
NFB
R
S
T
PC
External transistor common
24VDC power supply
Contact input common (source)
STF
STR
RH
RM
RL
SD
Forward rotation start
Reverse rotation start
Middle
High
Low
Frequency setting signals (Analog)
10 (+5V)
2
2
3
1
4 to 20mADC (+)
4 (4 to 20mADC)
Frequency
setting
potentiometer
1/2W1k
(*4)
RUN
SE
Running
FM
SD
Control input signals
(No voltage input allowed)
Jumper
: Remove this
jumper when FR-BEL
is connected.
Motor
IM
Ground
Alarm
output
A
B
C
U
V
W
P1
P
N
(+) (-)
Earth (Ground)
Grounding resistance 100 maximum
Grounding cable size: 2mm
2
Selected
Multi-speed selection
Operation status
output
Contact input common
5 (Common)
Open collector
output common
Current input (-)
MC
Open
collector
outputs
Calibration
resistor (*2)
SINK
SOURCE
RS-485 Connector (*1)
Inverter
Main circuit terminal, Control circuit input terminal,
Control circuit output terminal
0 to 5VDC
0 to 10VDC
Indicator
1mA full-scale
Analog meter
(Digital indicator)
1mA
(*3)
When using current input as the
frequency setting signal, set "4"
in any of Pr. 60 to Pr. 63 (input
terminal function selection) and
assign AU (current input selection)
to any of terminals RH, RM, RL
and STR.
Take care not to short
terminals PC-SD.
Remarks
*1 Only the type with RS-485 communication function
*2 Not needed when the setting dial is used for calibration. Used when
calibration must be made near the frequency meter for such a reason as a
remote frequency meter. However, the frequency meter needle may not
deflect to full-scale if the calibration resistor is connected. In this case, use
this resistor and setting dial together.
*3 You can switch between the sink and source logic positions. For details, refer
to the instruction manual (detailed).
*4 When the setting potentiometer is used frequently, use a 2W1kΩ potentiometer.
CAUTION
Keep the signal cables more than 10cm (3.94inches) away from the power cables.