Aerco Adding a Communications Board to ECS Manual do Utilizador descarregar pdf (Página 4)

NOTE

AERCO recommends that shielded, twisted-pair cable be

used for communication wiring. Examples of suitable wiring

are : Belden 9841, 8761, 3105A, or equivalent.

Figure 5

Table 1. Modbus Communication Signal Connections

COMPUTER CONTROL CABLE

2408 TEMP. CONTROLLER

RS232/9-PIN RS232/25-PIN RS485

SIGNAL

NAME

PIN NO.

SIGNAL

NAME

PIN NO.

GROUND HD GROUND 5 7 GROUND

RECEIVE HE TRANSMIT 3 2 A+

TRANSMIT HF RECEIVE 2 3 B-

4. After the appropriate wire leads have been connected, close and secure the swing-

down panel and close the Control Box door. This completes the installation of the

Communications Board.

5. For additional information and documentation on the 2408 Controller, refer to the

Eurotherm Website at the following address:

www.eurotherm.com/products/controllers/2400_doc.htm

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Aerco Adding a Communications Board to ECS Manual do Utilizador Página 4