ABB YB161601-BL Embedded card

Analogue channel wiring Ensure the following connection requirements are met so as to guarantee the measuring accuracy of the device: 

 Use analogue cables with a braided shield. 

 Separate the laying of analogue cables and power cables. Where required, install metallic shielding in cable channels. 

 Earth the screen at the place where it enters the control cabinet. 

 Connect the screen close and directly with AGND.

A reading is taken from each input channel every millisecond, regardless of how many channels are actually in operation. Sampling rate Operating mode AI-PT 250 ms In operating mode AI-PT, calculations are carried out after the millisecond sampling rate. A new value is available in the user program every 250 ms.

If filtering is active

 an average is calculated for the set time range. However a value is still issued during the sampling rate interval. For example, if the filter is set to 1,000, the average of the measurements for the previous 1,000 ms / 1,000 measurements is issued each millisecond (or, in the case of operating mode AI-PT, the average for the last 250 ms / 1,000 measurements). The filtering can be activated and configured using CODESYS V3. The sampling rate is constant. It can only be filtered with a whole multiple of the sampling rate.

If a voltage of ±10 V is applied to an AI (U), a plausible value is still given up to approx. ±15 V. The specified accuracy is only valid for the range – 10 to +10 V. From a voltage of ±16 V, the values are distorted considerably and from +23 V an error bit is set which can be queried in the application program.

Data of the analogue outputs

The analogue output is not active during device boot-up. Deviations from the zero value during switching on are approx. ≤ 1.5% of the signal range (voltage connected to open output for approx. 150 ms). During temporary interruptions – The analogue outputs are disconnected and lowresistance in the case of temporary interruptions to the power supply of > 10 ms.

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