AH500 Module Manual 4. Average Digital values are averaged. The number by which the sum of several digital values is divided is between 1 and 100. The sampled values are taken as a queue, and the length of the queue is N. Each time a new sampled value is put at the end of the queue, an original value at the start of the queue is removed. The N values are averaged so that the periodic noise is suppressed. 5. Disconnection detection If a channel is enabled, the module will check whether a sensor is disconnected. If an input circuit is an open circuit, the module will give an alarm. Please refer to description below for more information. A four-wire Pt100 sensor is taken for instance. 810:
Maximum temperature -190: Minimum temperature n: 0~7 A three-wire Pt100 sensor is taken for instance. 810: Maximum temperature -190: Minimum temperature n: 0~7 6. Channel detection If an input signal exceeds a range of inputs which can be received by hardware, an error message appears. Please refer to section 5.2.1 for more information.
5-44 Disconnection Result Disconnection Result On+ -190 (Minimum temperature) On- , In+ -190 (Minimum temperature) On- -190 (Minimum temperature) On- , In- -190 (Minimum temperature) In+ 810 (Maximum temperature) In+ , In- -190 (Minimum temperature) In- -190 (Minimum temperature) On+ , On- , In+ -190 (Minimum temperature) On+ , In+ 810 (Maximum temperature) On+ , On- , In- -190 (Minimum temperature) On+ , In- -190 (Minimum temperature) On+ , In+ , In- -190 (Minimum temperature) On+ , On- -190 (Minimum temperature) On- , In+ , In- -190 (Minimum temperature) Disconnection Result Disconnection Result On+ -190 (Minimum temperature) On- , In+ 810 (Maximum temperature) On- -190 (Minimum temperature) On- , In- -190 (Minimum temperature) In+ 810 (Maximum temperature) In+ , In- 810 (Maximum temperature) In- 810 (Maximum temperature) On+ , On- , In+ 810 (Maximum temperature) On+ , In+ 810 (Maximum temperature) On+ , On- , In- 810 (Maximum temperature) On+ , In- 810 (Maximum temperature) On+ , In+ , In- 810 (Maximum temperature) On+ , On- -190 (Minimum temperature) On- , In+ , In- 810 (Maximum temperature)