Digital Modules | SMART I/O User’s Manual |
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4.4SM-ACI1
4.4.1Introduction
The SM-ACI1 provides eight optoisolated 80 V AC to 264 V AC inputs arranged in six independent groups with respect to common neutral connections. The input frequency range is 47- 63 Hz, with the system registering a logical ’1’ when the input is active. A logical ’0’ is returned when the input is no longer active. However, a low-pass filter restricts signals exceeding the filter limit, thus registering a logical ’0’ with the system.
The user interface is realized by eight green LEDs (one per input channel), which switch on when the inputs are energized, and by a configurable filter on the last channel used for INTx interrupts, that can be mounted on the specific interrupt slots envisaged for this purpose.
08 Jan. 98 | Manual ID 09901, Rev. Index 0500 | Page 4 - 53 |
