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 75.1041.08 LO21U 20150708 

 

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PRODUCT 
DESCRIPTION

 

TECHNICAL 
SPECIFICATIONS

 

USERS GUIDE

  

LO-21U 

LOCKOUT RELAY 

SAFETY 
PRECAUTIONS

 

 

 

 
 

The LO-21U (PN: 10LO21U) is a micro-processed lock out module designed to operate on swing door applications with 
BEA’s Bodyguard or DK-12 overhead presence sensor.  The LO-21U interprets door open or door closed position based 
upon motor voltage input. The motor voltage information is sent from the LO-21U to the Bodyguard or DK-12 via data lines. 
The LO-21U provides optional safety beam input (dry contacts) to override the inhibit signal during closing.   
 

 
  

 
 
 

 

DESCRIPTION 

SPECIFICATION 

Supply voltage 

12 to 24 VAC / 15 to 24 VDC 

Operating frequency 

4 MHz (Microprocessor) 

Power consumption 

10 mA at rest, 50 mA Maximum 

Output 

(2) SPST Relays 

Maximum voltage – Relay contacts 

60 VDC, 120 VAC 

Maximum current – Relay contacts 

2A DC, 0.5 A AC 

 
 
 

 
 

 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 

 
 
 
 
 
 

 

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  tests  that  may  result  in  unexpected 

reactions by the door. 

 

Always check placement of all wiring before powering up to insure that moving door parts will not catch any 

wires and cause damage to equipment. 

 

Ensure compliance with all applicable safety standards (i.e. ANSI A156.10) upon completion of installation. 

 
 
 
 
 
 
 
 
 
 
 
 

COMPONENT ID

 

 

Green LED     Dipswitches 
 
   Red LED 

OBSOLETE

Summary of Contents for LO-21U

Page 1: ... 24 VDC Operating frequency 4 MHz Microprocessor Power consumption 10 mA at rest 50 mA Maximum Output 2 SPST Relays Maximum voltage Relay contacts 60 VDC 120 VAC Maximum current Relay contacts 2A DC 0 5 A AC 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 t...

Page 2: ... DC Green Door Control Common Blue Door Control Activate Yellow Door Control Safety 1 The dipswitches are located at the end of the LO 21U opposite of the wire connection terminal There are 8 positions available Dipswitch designations are as follows BLANK 1 INHIBIT GND 2 INHIBIT 3 N C 4 N O 5 COM 6 POWER 7 POWER 8 BLANK 1 INHIBIT GND 2 INHIBIT 3 N C 4 N O 5 COM 6 POWER 7 POWER 8 115 VAC BODYGUARD ...

Page 3: ... 0 seconds 1 second 2 Time Delay 2 sec value 0 seconds 2 second 3 Time Delay 4 sec value 0 seconds 4 second 4 Time Delay 8 sec value 0 seconds 8 second 5 Time Delay 16 sec value 0 seconds 16 second 6 Voltage switching device Voltage source is other than motor Motor Voltage 7 Safety circuit logic used with DS 8 7 OFF 8 ON N O Safety Circuit 8 Safety circuit logic used with DS 7 7 ON 8 OFF N C Safet...

Page 4: ...wires Also make sure the LO 21U has the proper input voltage at the orange and brown wires 5 Once the Bodyguard is functioning correctly with regard to the open and closed door setup walk testing may begin q Do NOT proceed with walk test until the Bodyguard is functioning correctly 6 The LO 21U has two LED s to indicate what function it is performing When the door is closed and someone steps into ...

Page 5: ...62 from 7am 5pm For after hours call East Coast 1 866 836 1863 or 1 800 407 4545 Mid West 1 888 308 8843 West Coast 1 888 419 2564 DO NOT leave any problem unresolved If you must wait for the following workday to call B E A leave the door inoperable until satisfactory repairs can be made NEVER sacrifice the safe operation of the automatic door or gate for an incomplete solution Web www beasensors ...

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