Loop Detector Pin Connections

Comet utilizes loop detector (Comet product number 402280, manufacturer number LMA-1250S-LV) as an option for presence. The relay socket (Comet product number 402281, manufacturer number 27E123) is utilized for wiring. Both are described in this document the wiring details and pin connections. Comet also sets frequency setting and functions, which are described herein as well.

Pin Connections

The loop detector pin connections (this is also printed on the detector itself):

1. +12-24VDC, +24VAC (Black)
2. DC Ground. -24VAC (White)
3. Output B Relay – N.O. (Orange) (closes for detect)
4. No connection (Green)
5. Output A Relay – COM (Yellow)
6. Output A Relay – N.O. (Blue) (closes for detect)
7. Loop Input (Gray)
8. Loop Input (Brown)
9. Output B Relay – COM (Red)
10. Output A Relay – N.C. (White/Black)
11. Output B Relay – N.C. (White/Red)

Wiring Detail

Frequency and Function Settings

Comet programs the loop detector with the frequency and function settings necessary for optimal performance. The factory settings are notated on the loop detector itself.

FREQUENCY (2 Pos. DIP Switch)

SW1  SW2       Level

ON    ON    =   Low

FUNCTIONS (8 Pos. DIP Switch)

SW1    Function4

ON   =  Sensitivity Boost

SW2    Function

OFF  =  Output A Infinite Presence

SW3    Function

ON   =  2-Second Delay

SW4   SW5    Extension Timing

ON     OFF               =  2 Seconds

SW6   SW7     Output B  

ON      Off    =  Pres. (Same as A)

SW8

OFF