LiftMaster LOGIC 5.0 Mode D'emploi

This service kit provides all the necessary components to upgrade
Logic 5.0 operators to include current sensing technology. Not all
components are required for all applications.
INSTALLATION
FOR MODELS T, SD, GSD, GT, GH
& DAMP ENVIRONMENT (C-PREFIX)
NOT COMPATIBLE WITH N4/N4X MODELS
DO NOT connect the power or activate the operator until
instructed to do so.
REMOVE LOGIC CONTROL BOARD
NOTE: Label wires for reinstallation. See enclosed wiring diagram
for proper connections.
1. Disconnect power from the operator.
2. Disconnect all wires from the board:
• Control Wiring Terminal Block
• System Wiring Connector (J3)
• Coaxial Antenna
3. Remove option boards on slots 1 and/or 2 (if present) set aside.
4. Remove the logic control board from its four mounting posts
using needle nose pliers or a flathead screwdriver.
LOGIC 5.0 CONTROL BOARD OVERVIEW
Slots for option boards
Current Sense
Motor direction
jumper
Coaxial antenna
connecter
System wiring
connector (J3)
LOGIC 5.0 CONTROL & POWER BOARDS
WITH CURRENT SENSE FOR 3 PHASE OPERATORS
To reduce the risk of SERIOUS INJURY or DEATH:
• Disconnect electric power at the fuse box BEFORE proceeding.
• ALL electrical connections MUST be made by a qualified
individual.
• Upon completion of kit installation, the area MUST be cleared
and secured. At that time the unit may be returned to service.
INSTALL NEW LOGIC CONTROL BOARD
1. Install the logic control board into the operator. Position the
board onto mounting posts pressing firmly to ensure posts are
completely through mounting holes.
2. Reconnect all wires:
• Control Wiring Terminal Block
• System Wiring Connector (J3)
• Coaxial Antenna
3. Install option boards in slots 1 and/or 2 (if present).
4. Make sure the electrical box is clear of all debris and tools.
Proceed to remove L1, L2, & L3 terminal block & power board.
Control wiring
terminal block