4-140
4-4 Communication Function
4
Functions
<RS485 Port Specifications and Connections>
For the RS485 communication function, use the TM2 terminal on the control terminal block board.
The following wires are recommended for TM2:
Single wire
0.14 to 1.5 mm
2
(If two equal-sized wires are connected to one pole:
0.14 to 0.5 mm
2
)
Stranded wire
0.14 to 1.0 mm
2
(If two equal-sized wires are connected to one pole:
0.14 to 0.2 mm
2
)
Stranded wire with solderless terminal
0.25 to 0.5 mm
2
(Example: PC-1.25 F-7 from J.S.T. MFG. Co., Ltd.)
Wire strip length
5 mm
Tightening torque
0.22 to 0.25 N•m (screw size: M2)
• Connection
Connect the Inverters parallel to each other, as shown below. For the termination Inverter, short-
circuit the RP and RS- terminals. (Also, if the RS485 communication function is used with a single
Inverter, the RP and RS- terminals must be short-circuited.)
Short-circuiting the RP and RS- terminals activates the termination resistor inside the control
terminal block board, suppressing signal reflection.
Terminal
abbreviations
Description
RS+
Transmission/Reception (+)
RS-
Transmission/Reception (-)
RP
Termination resistor enabling terminal
RS-
Termination resistor enabling terminal
Control terminal
block
Control terminal
block board
RS+
RS+
RS-
RS-
RP
RP
RS-
RS-
External controller
RS+ RS-
RP RS-
RS+ RS-
RP RS-
RS+ RS-
RP RS-
Summary of Contents for 3G3RX Series
Page 1: ...Cat No I560 E1 03 USER S MANUAL SYSDRIVE RXSERIES High function General purpose Inverter ...
Page 2: ......
Page 17: ...Chapter 1 Overview 1 1 Functions 1 1 1 2 Appearance and Names of Parts 1 4 ...
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Page 23: ...Chapter 2 Design 2 1 Installation 2 1 2 2 Wiring 2 6 ...
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Page 337: ...Chapter 6 Inspection and Maintenance 6 1 Inspection and Maintenance 6 1 ...
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Page 437: ...Index ...
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