ABB HIER471062P1 UNS0874A Channel smart card

Digital output modules incorporate output 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. The total value of the capacitance of the field devices connected to the digital input and output 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: Calculate the total capacitance of an AKB651 cable with a capacitance of 200 pF/m. Note: It is not necessary to take into account the capacitance of pressure clamp terminal block, terminal boards, or signal cable adapters.

Terminal Board is Connected

 The SDV531 digital output module can respectively handle a maximum of 0.6 A load currents per channel. However, this can cause the generation of a voltage drop due to connected cable and adapter resistance components, etc. Therefore, it is necessary to take account of the limitations on the magnitude of load current and connected cable length as given below. In case of short circuits detection is enabled, the possible cable length may be limited.

Note: In addition to the influence of voltage drop and wiring capacitance, possible cable length may be shorter when the short circuit detection during output OFF is needed. The above table shows the case that short circuit detection is taken into account. Columns grey in the above table are the area influenced by the short circuit detection.

For SBD3D 

SBD3D has parallel diode inside in order to use dual-redundant configuration power supply. The voltage drop of this diode shows 0.55 V. An external power supply shall be specified as additional 0.55 V within the applicable voltage range 28.8 V maximum of the SBD3D. The voltage drop from the external power supply (Vp) to the output channel load is a total voltage drop of ∆V1 in the power line, ∆V2 in the signal line and ∆V3 in the circuit inside Digital Output Module.

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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