LiftMaster SN700255 Mini-Key 500 Access Control System Installation Guide

LiftMaster SN700255 Mini-Key 500 Access Control System

Wire Charts

Use the following chart to pull wires in preparation for your installation:

MINI-KEY SYSTEM WIRING

SYSTEM POWER
Use 2-conductor, shielded wires, and appropriate wire gauge (AWG) according to the chart below:

Installation Guidelines

PROVIDE POWER FROM A DEDICATED SOURCE
Plug LiftMaster-provided transformer into outlet wired to its own circuit breaker. This will prevent two problems:

• Other equipment cannot introduce spikes, noise, surges, or dips into the power circuit that will affect the system.
• The system’s operation will not be affected if any other equipment develops a short circuit across the power line.

AVOID OVERLOADING THE TERMINAL BLOCKS
LiftMaster discourages inserting more than one wire into the same terminal pin.
To wire a terminal block:

1. Lift head off terminal pins.
2. Loosen screws.
3. Insert wires.
4. Tighten screws.
5. Replace head on terminal pins.

READ THE BOARD MARKINGS CAREFULLY
The connection points are marked on the boards. Before making any connection, make sure you read the board markings.

USE METAL CONDUIT (NOT PVC)
Always run wires in metal conduit instead of PVC pipe. Wires run in PVC conduit may cause the system to malfunction due to interference. Metal conduits also add extra protection against lightning strikes.

DISCHARGE STATIC
Before touching LiftMaster components (e.g., circuit boards), discharge any static electricity:

• Use a grounding strap OR
• Touch a cold, grounded, metallic pipe.

NEVER RUN DATA AND HIGH VOLTAGE WIRES IN THE SAME CONDUIT
The high voltage wires may interfere with the data wires, possibly causing the system to malfunction.

Mounting the Cabinet

1. Remove the four (4) screws from the Mini-Key’s front panel with the provided hex tool (see Figure 5). Carefully remove the keypad and the boards from the cabinet and set aside onto a static-free surface.

2.  Use the knockout (back of enclosure) to run wires into the cabinet (see Figure 6).

3. If the installation does not allow you to run the wires through the knockout, drill a 7/8″ diameter hole through the bottom of the enclosure to accommodate a 1 /2″ conduit. Be sure to securely connect the conduit to the unit.
   Note: Wires run through the bottom of the enclosure will be more prone to tampering or vandalism.

4. Securely mount the unit on the wall or pedestal. Mounting hardware is provided if you are using LiftMaster’s pedestal mount post. Do not put the keypad and the circuit board back into the cabinet until all connections are made as described in this manual.

Wiring

Door Strikes
Connect the wires from the door strike and the strike power supply to the terminal block according to Figure 7. Strike power may not be drawn from the same transformer as the power for the Mini-Key system.

Mag Locks
Connect the wires from the mag lock and the strike power supply to the terminal block according to Figure 8. Mag Lock power may not be drawn from the same transformer as the power for the Mini-Key system.

Dry Contact Closure (Most Gate Operators)
Connect the wires from the gate operator to the terminal block according to Figure 9.

Auxiliary Opening / Exit Request (REX) Devices
Any device (e.g., exit button or Knox box) that provides a contact closure can be hooked up to the Mini-Key at:

• “EXIT1” and “COM” (TB3) to activate Rela 1 OR
• “EXIT2” and “COM” (TB3) to activate Rela 2

Timer/Clock
You may install a timer or clock to the Mini-Key system to be used in conjunction with the time clock feature. This timer or clock must provide a floating contact closure (a floating contact closure is a contact closure that is not grounded). To install a timer or clock, refer to Figure 11.

WARNING
Any clock or timer connected to the Mini-key system must provide a floating contact closure. If not, there is a very strong chance that the clock will “burn out” the circuit board and may start a fire. Any use of these devices will also void any LiftMaster warranty. If your clock or timer plugs directly into an AC power source and it has an AC output terminal, it does not provide floating contact closure and should not be used with the Mini-Key system.

Remote Keypad
You may install a remote keypad to work with the Mini-Key. All information programmed into the Mini-Key will be the same information read by the remote keypad (refer to the Mini-Key Programming Guide for details).

1. Install a remote keypad according to Figure 12.
2. Connect the shields to the ground screw on the Mini-Key.

Grounding the System
Ensure that the system is grounded properly by following the directions below. The Mini-Key contains a number of static sensitive components that can be damaged by static discharge. This type of damage is not covered under LiftMaster’s warranty.

1. Ground the cabinet according to Figure 13.
2. Connect any unsecured drain/shield wires to the ground screw.

Powering the System

1. Connect the 2 conductor cable from TB4 at the Mini-Key unit to the 12VAC, 20 VA transformer supplied by LiftMaster (or the 13.5 VDC power supply that you provide).
2. DC Power Note: If you are using a DC power supply, the Mini-Key system will not trickle charge a battery, so the DC power must be supplied by an uninterruptible power supply (UPS).
3. Plug the transformer into a 110 VAC outlet ONLY after all connections have been made. Any other type of outlet will cause damage to the system.
   

Testing and Troubleshooting

1. Plugin the unit’s power transformer into the 11 0VAC power outlet if you haven’t done so.
2. Test the Doors and Relays using an entry code.
3. Refer to the Mini-Key Programming Guide for details on adding codes to the system’s database. If any problems occur, see below.

• RESOLVE COMMON INSTALLATION MISTAKES
  • Check for correct length and AWG of wires. See page 3.
  • Check that wires are correctly inserted into the terminal blocks (not loose, no two sharing the same pin, etc.).
  • Checkboard markings for correct wiring.
  • Make sure high voltage and data wires do not share the same conduit.
  • Use metal conduit, not PVC.
• No POWER TO UNIT
  • Check power at the source. Power must come from a dedicated 11 0VAC outlet.
  • The outlet into which you plug the transformer should be wired back to its own circuit breaker.
• DOOR STRIKES/ MAG LOCKS NOT WORKING
  • Check power source. Strikes and Mag Locks must be powered independently from the unit.
  • Connect and test different Strike or Mag Lock. Make sure Strike or Mag Lock is not defective.
  • Check relay connections at TB1. The door Strike device should be wired to COM and NO (Normally Open) terminals.
  • Mag Lock device should be wired to COM and NC (Normally Closed) terminals.
• Aux OPEN / EXIT REQUEST DEVICE
  • Check device connections at TB3. The device should be wired to EXIT and COM terminals.
• GATE OPERATOR (DRY CONTACT CLOSURE) NOT WORKING
  • Check gate operator functionality.
  • Check relay connections at TB1.
  • The dry Contact Closure device should be wired to
  • COM and NO (Normally Open) terminals.
• TIMER/CLOCK NOT WORKING
  • Check timer functionality.
  • Check connections at TB3.
  • Timer should be wired to COM and TZONE terminals.
  • The timer must provide a floating contact closure.
• REMOTE KEYPAD NOT WORKING
  • No Power? Check the splice into the power conductors. Check the power connections at TB4.
  • Check data wiring at TB2.

Reference

Mini-Key Circuit Board

FCC Requirements: Radio Frequency

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and
2. this device must accept any interference received, including interference that may cause undesired operation.

This document is protected by copyright and may not be copied or adapted without the prior written consent of LiftMaster. This document contains information proprietary to LiftMaster and such information may not be distributed without the prior written consent of LiftMaster. The software and firmware included in the LiftMaster product as they relate to this documentation are also protected by copyright and contain information proprietary to LiftMaster.

FOR TECHNICAL SUPPORT
Call our toll free number: 800-528-2806
Installation and service information is available six days a week (Monday- Saturday)

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