Mitsubishi Electronics FR-A500L Connection to the PU connector, For RS-485 communication

INSTALLATION AND WIRING

2.2.4 Connection to the PU connector

(1) When connecting the operation panel or parameter unit using a connection cable

<Recommended cable connector>

•Parameter unit connection cable (FR-CB2) (option) or the following connector and cable.

•Connector: RJ45 connector

Example: 5-554720-3, Nippon AMP

• Cable: Cable conforming to EIA568 (e.g. 10BASE-T cable)

Example: SGLPEV 0.5mm×4P, MITSUBISHI CABLE INDUSTRIES, LTD.

Note: The maximum wiring length is 20m (65.62 feet).

(2) For RS-485 communication

With the operation panel disconnected, the PU connector can be used for communication operation from a personal computer etc.

<PU connector pin-outs>

Viewed from the inverter (receptacle side) front

⑧	① SG	⑤ SDA
	② P5S	⑥ RDB
	③ RDA	⑦ SG
	④ SDB	⑧ P5S

①

Note: 1. Do not connect the PU connector to the computer’s LAN board, FAX modem socket or telephone modular connector. Otherwise, the product may be damaged due to electrical specification differences.

2.Pins 2 and 8 (P5S) provide power to the operation unit or parameter unit. Do not use these pins for RS-485 communication.

Use the connector and cable as detailed below.

• Connector: RJ45 connector

Example: 5-554720-3, Nippon AMP

• Cable: Cable conforming to EIA568 (e.g. 10BASE-T cable)

Example: SGLPEV 0.5mm×4P, MITSUBISHI CABLE INDUSTRIES, LTD.

œWhen the communication board of the personal computer has the RS-232C specifications, prepare an RS-485, RS-232C converter.

Example of converter.

1)Model: FA-T-RS40 Converter

Industrial Systems Division Mitsubishi Electric Engineering Co., Ltd.

2)Model: DINV-485CAB

Interface built-in cable

Dia Trend Co., Ltd.

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