LiftMaster Model MT - Trolley Arm Commercial Door Operator

Medium Duty Trolley Operator for Standard Lift Sectional Doors

Model MT is a Medium-Duty Logic trolley operator for standard lift sectional doors. It features a high-starting torque motor, a compact design, quick-gliding rail spacers and a quick-mount swivel header bracket.

MEDIUM-DUTY LOGIC TECHNOLOGY
Added Value

• UL325-2010 compliant Medium-Duty Logic programmable integrated circuit board.
• Built-in 3-channel, 315MHz radio receiver accepts up to 20 Chamberlain® Security+® or unlimited DIP switch remotes.
• 3-button remotes can be programmed for OPEN/CLOSE/STOP operation.
• Programmable C2 or B2 wiring options (B2 requires CPS-U, CPS-UN4, or CPS-EI).
• Integrated Timer-to-Close (TTC) allows programming from 5 to 60 seconds in 5-second increments. Allows for timed automatic door closure after the door reaches the full open position (Requires monitored safety devices, with CPS-U, CPS-UN4, or CPS-EI).
• Integrated 90-second maximum run timer.
• UL325-2010 Monitored Entrapment Capability.
• Monitored protection against transient overvoltage conditions.
• 3-button control station included.

STANDARD FEATURES:

DUAL VOLTAGE CONNECTIONS

Increase flexibility by enabling the installer to select the required voltage, within phase, to meet job-site requirements.

Within phases, voltage is selectable at the time of installation with the placement of a connector. • Single-Phase: 115V and 230V• 3-Phase: 208V, 230V and 460V• 575V is a discrete model without field-selectable voltage

EMERGENCY DISCONNECT

Disconnects operator from door for manual lifting in an emergency.

HEAVY-DUTY WORM GEAR-IN-OIL GEAR REDUCER

Delivers performance for heavy industrial, high-cycle applications.

CONTROL FUNCTION SELECTOR DIAL

Enables easy selection and programming of (7) wiring types, from constant pressure to close, to specialized Timer-to-Close functionality to meet end-user needs.

TIMER-TO-CLOSE

Conveniently and confidently closes the commercial door automatically after a predetermined amount of time has elapsed for added security and peace of mind.

CONTINUOUS-DUTY HIGH-STARTING TORQUE MOTOR

Performs in demanding industrial overhead door applications.

MOTOR REMOVABLE WITHOUT AFFECTING LIMIT SWITCH SETTINGS

Saves time and money for maintenance.

ADJUSTABLE FRICTION CLUTCH

Helps to protect door and operator from damage should the door meet an obstruction.

MID-STOP

Enables partial opening of door to a preprogrammed position for energy savings, time savings and convenience.

MAXIMUM RUN TIMER

Reverses or stops door if closing time exceeds expected time-frame to limit damage to door and operator.

DELAY-ON-REVERSE CIRCUIT

Prevents abrupt reversal of door, reducing wear on the door and operator system.

3-BUTTON CONTROL STATION WITH MAINTENANCE ALERT SYSTEM (MAS)

Provides open/close/stop functions and notification when routine maintenance is required.

SPECIFICATIONS:

SECURITY+ 2.0™ RADIO RECEIVER

Standard on-board with Logic 5.0 operators. Accepts up to (90) single-button or (30) 3-Button remote controls plus up to (30) wireless keypads or an unlimited number of DIP switch remotes.

MOTOR

Continuous-duty high-starting torque motor with instant reverse and overload protection. Available in 1/2, 3/4, 1 and 1-1/2 HP; single- or three-phase. Capacitor start on single-phase.

WIRING TYPE

Operators are factory preset to C2 wiring, providing momentary contact to open and stop, with constant contact to close. Monitored entrapment protection, using approved photo sensors or sensing edges is optional, although recommended, when using C2, D1 or E2. All other wiring types, B2, T, TS and FSTS can be selected with the addition of an appropriately monitored entrapment protection device (LiftMaster® CPS-U photo eyes, LiftMaster OES monitored sensing edge, or a monitored sensing edge supported by the CPS-EI, as examples). Logic 5.0 operators can only accept UL-Approved LiftMaster monitored entrapment protection devices.

CONTROL CIRCUIT

5V DC NEC Class 2.

DRIVE REDUCTION

10:1 first-stage using heavy-duty gears running in oil bath; cast iron housing; #41 chain second stage; #41 output chain on trolley.

BEARINGS

Sealed roller bearings in gear reducer. Flange-mount industrial ball bearings on drive shaft.

BRAKE

Standard on all GT operators.

CONSTRUCTION

NEMA 1 type electrical box, heavy-duty 11-gauge steel frame with durable powder coat finish, all reduction sprockets drilled and pinned to shafts.

#41 TROLLEY ROLLER CHAIN

Standard on GT Operators.

WARRANTY

Two Years.

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