Elgo LIMAX44 RED, Operating Manual

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Design and Functions
9 Design and Functions
9.1 Sensor Design .................................................................................................. 37
9.2 Operating Modes ............................................................................................. 39
9.2.1 Dual-Channel Operation ................................................................................................. 39
9.2.2 Single-Channel Operation ............................................................................................... 39
9.3 LED Signals ...................................................................................................... 39
9.3.1 Signalling Severe Errors ................................................................................................... 41
9.4 Door Zone Indication ........................................................................................ 42
9.5 Connections and Interfaces ................................................................................ 42
9.5.1 Power Supply ................................................................................................................. 42
9.5.2 Door Zone Indication ...................................................................................................... 42
9.5.3 Pin Assignment ............................................................................................................... 43
9.5.3.1 RS-485 Interface ................................................................................................................. 43
9.5.4 Protocol Descriptions ....................................................................................................... 43
9.5.4.1 RS-485 Interface ................................................................................................................. 43
9.5.5 Presence Detector Magnetic Tape (only semi-guided variant) ................................................ 49
9.1 Sensor Design
The sensor consists of:

Sensor housing with integrated LEDs (for signaling of various status options), fixed connector for power
supply and for communication with the safe evaluation unit.

Guide rail which holds the magnetic tape at a defined distance from the evaluation electronics (only
semi-guided version)

Ground connector to improve EMC characteristics (connection not mandatory)