Drehmo i-matic Panduan Instalasi dan Pengoperasian - Halaman 16

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Supplement operating manual for DREHMO i-Matic actuators with integrated

2.5.2 Actuator i-Matic for Ex-Zone acc. ATEX device category 2 G – DiM-X1X

2.5.2.1

Connection with copper cable

The connection of the modbus signal lines (A, B) from inputs and outputs have to be done on the appropriate

terminals in the termination compartment. If the actuator is not the last node on the bus, the necessary T-

piece may be made up by means of using the available double terminals (A1, B1, A2, B2) which are

electrically connected. A bridge between incoming and outgoing bus signals has to be made to achieve the

required T-piece.

The bus terminator always has to be provided near or downstream of the last bus device for correct bus

termination. If the last bus device is an i-Matic type DREHMO actuator, the terminator can be activated by

connecting terminals Tx+ with Bx and Tx- with Ax (see next picture), (x = number of channel).

Connection of two Profibus systems to an i-Matic drive

Devices for use in explosive areas have a spur length of approximately 40 cm for each channel.

Wenden, 21.03.12

Prepared by: Ste

MODBUS fieldbus interface

channel 1: leading to the next device

channel 2: last device on the segment (terminator activated)

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