Product:ABB 5STP17H4800 In Origianl Packing with Good Quality 5STP17H4800
AC800M series module, industrial robot spare parts DSQC series, Bailey INFI 90,800xA, Advant OCS withMaster Software, Advant OCS with MOD 300 software, Freelance - Distributed control system for the process industry
Symphony Melody, Satt OCS, Symphony DCI System Six, Harmony / INFI 90, security systems, etc.
In powered networks the alternating voltage is superimposed onto the DC voltage being used to power the devices. In either case, the fieldbus receive circuits look at only the alternating voltage. Positive voltage swings have one meaning, negative swings have the opposite meaning. Therefore, the fieldbus signal is polarized. Field devices must be connected so that they all see the signal in correct polarity. If a field
device is connected “backwards” it will see an inverted version of the alternating voltage and won’t be able to communicate. However, there are non-polarized field devices available. This field devices can be connected in either polarity across the network. The non-polarized devices are invariably network-powered, which provides a clue as to how they can work with either polarity
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We have experienced staff, extensive testing , all the spare parts which we sold are with warranty period of one year, and they have undergone rigorous testing and certification!
We have a large inventory of control system components. We also made a lot of new hardware and discontinued spare parts to help supporting your existing control systems.
You might find you need spare parts in our data, we welcome you give valuable suggestions to us with our products at any time!
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