LiftMaster HDSL24UL Installation Manual - English - Page 34

ACCESSORY WIRING Locks Maglock (2 Terminals, N.C. and COM) Relay contact output, Normally - closed (N.C.) output for maglocks. Relay activates prior to motor activation and during motor run. Relay is off when motor is off. CONTROL BOARD MAGLOCK NOT PROVIDED Miscellaneous Wiring Three button control station (4 Terminals) • OPEN and COM: Opens a closed gate. Hard open (maintained switch overrides external safeties and resets alarm condition). If maintained, pauses Timer-to-Close at OPEN limit. Opens a closing gate and holds open an open gate (within line-of-sight). • CLOSE and COM: Closes an open gate. Hard close (maintained switch overrides external safeties and resets alarm condition within line-of-sight) • STOP and COM: Stops a moving gate. Hard stop (maintained switch overrides Open and Close commands and resets alarm condition). If maintained, pauses Timer-to-Close at OPEN limit. Overrides Open and Close commands (within line-of-sight). Fire department open input (2 Terminals) Acts as hard open. Maintained input overrides (ignores) external safeties (photoelectric sensor and edge), pauses Timer-to-Close momentary input logic as single button control and safeties remain active, re-enables Timer-to-Close. Accessory power class 2 supply 24 VDC, MAX 1 Amp (4 Terminals) • SWITCHED: Switched ON with gate motion and at the open limit when Timer-to-Close is active. Turns off 5 seconds after motion. • UNSWITCHED: 24 Vdc voltage out to power accessories, always ON. MAIN CONTROL BOARD Three Button Control Station Open Close Stop N.C. Com Fire Dept Com Fire Department MAIN CONTROL BOARD Accessory Power Switched Com (-) Acc power +24 Vdc Com (-) Acc power +24 Vdc Accessory Power Unswitched Terminal Block The terminal block provides additional space for accessory wiring. Terminal Block 34