Recent content by Indy

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    Digital input

    Hello, We have the following DI card from Siemens 6DL1131-6BL00-OPH1, which can have a 1 wire configuration. Can this card be wired to a 3 wire PNP sensor. With the 24v+ and 0v coming from a power supply and the signal going to an input channel? Thank you
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    ESD relay

    Hello, We have a few drives and DOL starters which will be provided by others( in an MCC)We will supply an ESD panel which will house a safety relay and expansion modules. The proposal is to leave dry contacts in the ESD panel for each of the drives/starters to be wired into. I assume that the...
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    Control panel surge protection

    Hello, I have a general question. If a control panel (plc modules etc) is powered from a ups source would it require a surge protector in the panel ? Thanks
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    Instrument cabling

    Hi, With regards to instrument cabling ( PT,LT,FT etc) can anyone point me in the direction of information/ standards on how this is sized 0.5mm2 , 0.75mm2 , 1mm2 etc for a particular application. Thanks
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    24vDC power supply

    Hello, I have a question about 24vDc powering instruments from a control panel. My question is why do we use a 2 core cable going to the device/instrument and do not provide a 3rd for for the earth connection like would be provided if the device was powered by AC single phase? Thanks
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    Cables for instrumentation

    Hello, I know that for 4-20ma transmitters twisted pair cable should be used with the screen grounded at one end only. However for digital signals ( limit switches , push buttons ) can 2 core/ part of a multi core cable be used ? Thanks
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