LCN 8310-877 User Manual

75.5317.00   20080111 

Page 1 of 13 

DESCRIPTION

TECHNICAL 

SPECIFICATIONS

SAFETY 

PRECAUTIONS

COMPONENT ID

INSTALLATION 

TIPS

The sensor must be  

firmly fastened to     

prevent vibration. 

The LCN Header Mounted Safety Sensor (HMSS) (8310-877) is a self-monitored ready overhead-mounted diffused active 

infrared sensing device that provides detection for the triggering of automatic swing door safety functions.  When used with 

LCN’s lockout devices, the sensor is programmed to allow two different fields of detection - one for detection when the 

door is in the fully closed position and the other for detection when the door is fully open.  While the door is in the fully open 

position, the HMSS extends its coverage back through the threshold area of the doorway, to provide coverage that will 

overlap with LCN’s motion sensors. 

As with all of LCN’s programmable sensing devices, full adjustability is achieved with the use of LCN’s hand-held remote 

control unit.  This allows alteration of all of the available functions as well as for inquiry of existing settings.  Should the 

need arise; the HMSS may also be tuned by means of two sensor-mounted buttons contained on the PC Board within the 

unit.  With these two buttons, the sensor’s field of detection can be altered without the use of the hand-held remote.  If a 

complete Door-Mounted Safety Sensor (DMSS) system is not used in addition to the Header Mounted Safety Sensor, LCN 

recommends the use of a lockout safety beam to allow safety signaling if the zone is entered during a door closing cycle. 

•

Shut off all power going to the header before attempting any wiring procedures. 

•

Maintain a clean & safe environment when working in public areas. 

•

Constantly be aware of pedestrian traffic around the door area. 

•

Always stop pedestrian traffic through the doorway when performing testing that may result in unexpected 

reactions by the door. 

•

Always check placement of all wiring and components before powering up to insure that moving door 

parts will not catch any wires and cause damage to equipment. 

Installation Height - Variable 

9’-0” max. (recommended 6’-6” to 8’-0”) 

Mounting Angles  

HMSS only 

HMSS with Spacer 

+5°, +10° (factory default setting: +5°) 

0°, +5°, +10°  

Power Supply 

12 to 24 V AC / DC +/- 10% 

Frequency 50-60 

Hz 

Output 

Max. Voltage at contacts: 60V DC / 125V AC 

Max. Current at contacts: 1 A  

Max. switching power:  30 W (DC), 60 VA (AC) 

Relay Hold Time 

0.5 to 9 seconds 

Operating Temperature 

-22°F to +140°F 

Immunity 

Immune to electrical and radio frequency interference 

Cable 4’- 

six 

conductor cable 

Weight 

1 b. 11 oz. (765g) 

Dimensions 

11.8”L (305 mm.) x 1.9”H (51 mm.) x 1.9”W (46 mm.) 

Material 

Aluminum & ABS plastic 

Housing Color 

Black anodized aluminum 

Left Lens 

4’ Cable 

Red LED 

Right End Cap 

    Left End Cap 

Right Lens 

Center Eye Shield 

  The sensor must not have 

any unwanted objects l kely 

to move or vibrate in its 

path. 

 The sensor should be 

mounted flush with bottom of 

door header. 

8310-877  HEADER MOUNTED SAFETY SENSOR

USER’S GUIDE