75.1041.06 20060605 Page 1 of 5
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.
ANSI / BHMA 156.10-2005 requires the use of a sensor or photobeam on the swing side of the door when using
a header mounted safety sensor, such as the Bodyguard or DK12. For more information reference the ANSI
156.10 standard.
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
Comments to this Manuals