
Rev.00 - 09.2021 | A1H-U Single Loop Detector | © 2021 | Allmatic
3
EN
Table of contents
1. Introduction .............................................................................................................. 4
1.1 Description ..........................................................................................................................4
1.2 Validity of documentation ......................................................................................................4
1.3 Who should use this documentation........................................................................................4
1.4 Use of the product ................................................................................................................4
1.5 Safety precautions................................................................................................................4
1.6 Other documents..................................................................................................................4
2. Product ..................................................................................................................... 5
2.1 Main features.......................................................................................................................5
2.2 Identification number ............................................................................................................5
2.3 Specifications ......................................................................................................................6
3. Wiring diagrams....................................................................................................... 7
4. Structure................................................................................................................... 7
5. LED indications.......................................................................................................... 8
5.1 Power / fault indicator LED....................................................................................................9
5.2 Loop state LED......................................................................................................................9
5.3 Relay state LED.....................................................................................................................9
6. Dip Switch .............................................................................................................. 10
DIP Switch settings....................................................................................................................10
7. Loop installation ..................................................................................................... 14
7.1 Dimension and placement of the loop ...................................................................................14
7.2 Inductance and loop turns.. .................................................................................................15
7.3 Loop wire material..............................................................................................................16
7.4 Feeder cable......................................................................................................................17
7.5 Ground Installation .............................................................................................................17
8. Product Setup Guide ............................................................................................... 18
8.1 Channel Selection ..............................................................................................................18
8.2 Sensitivity adjustment ..........................................................................................................19
8.3 Automatic Sensitivity Boost (ASB)..........................................................................................20
8.4 Fail Safe and Fail Secure mode............................................................................................21