ABB HIEE300686R1 Channel intelligent module

l Cautions of the power source for the loads of SBM54D In the case of using multiple power sources for the loads of SBM54D, there are cautions of the load voltage. When the load voltage is different between loads. All of the load voltages must be in either the range below. 

• Load voltages =< 100 V 

• 50 V < Load voltages =< 150 V l Cautions of the Digital I/O module when SBM54D is used. The functions of Disconnection diagnosis, ON Pulse diagnosis and OFF Pulse diagnosis for SDV541 must be disabled when SBM54D is used.

For dual redundancy, I/O modules should be mounted on Slot No. IO1-IO2, IO3-IO4, IO5-IO6, or IO7-IO8, as shown in the figure below.

LIMITATIONS ON DIGITAL INPUT MODULE CONNECTIONS 

Digital input incorporates input wiring diagnostic functions. Where a pulse test is enabled, it is necessary to take into account the following conditions for the length of the field wiring cable. l If Pulse Test is Used The total value of the capacitance of the field devices connected to the digital input modules and their wiring cable capacitance should be: Total capacitance < 0.1 µF (100000 pF) Note: Wiring capacitance from pressure clamp terminal block or terminal board to the field device depends on the cable type such as Discrete wire or Multi-core cable. Make sure the specification of cable. Note: Calculate the total capacitance of an AKB331 cable with a capacitance of 60 pF/m. Note: It is not necessary to take into account the capacitance of pressure clamp terminal block, terminal boards, or signal cable adapters.

l If SCB110 Wiring Check Adapters are Used 

To get digital input modules to recognize an ON input signal correctly, the total resistance of field devices and their wiring cables is no greater than 132 Ω. If no SCB110 wiring check adapters are used, the cables connecting the digital input module and the field devices should be limited in length so that the total resistance of all the connected field devices and cables is no greater than 1 kΩ. Note: It is not necessary to take into account the resistance of pressure clamp terminals, terminal boards, signal cable adapters, and wiring check adapters (SCB100/SCB110). The following table shows AKB331 cable lengths and allowable resistance on the field side if AKB331 cables are used.

Application industry

The products can be used in the following industries: power plant, paper making, steel, mining, rubber, water supply, cement, chemical industry, glass, printing

Textile, machinery, plastics, coatings, medicine, hospitals, food, hotels, scientific research institutions

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