GE IS210DTURH1A Counter card

Most amplifiers have an enable/disable input that permit s complete shutdown of the amplifier regardless of the voltage of the command signal. The Acc-24E2A AENA line is meant for this purpose. The amplifier enable signals of the Acc-24E2A is controlled by a relay with normal opened and normal closed dry contacts as shown in the diagram below:

Loss of Encoder Circuit 

The encoder-loss detection circuitry works for differential incremental encoders only. In proper operation, the digital states of the complementary inputs for a channel (e.g. A and A/) always should be opposite: when one is high, the other is low. If for some reason, such as a cable connection coming undone, one or more of the signal lines is no longer driven, pull-up resistors on the input line pull and hold the signal high. The encoder-loss detection circuitry uses exclusive-or (XOR) gates on each complementary pair to detect whether the signals are in the same or opposite states. These results are combined to produce a single encoder-loss status bit that the processor can read.

Brand display

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