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Hardware Installation Guidelines
In addition to the main power supply and secondary power supply that are required to be provided at the
central supervisory station, the system must be provided with an uninterruptable power supply (UPS) with
sufficient capacity to operate the computer equipment for a minimum of 15 minutes. If more than 15 minutes
is required for the secondary power supply to supply the UPS input power, the UPS must be capable of
providing input power for at least that amount of time. A means for disconnecting the input to the UPS while
maintaining continuity of power to the automation system must be provided, in order to perform
maintenance and repair service.
The UPS must comply with the Standard for Uninterruptable Power Supply Equipment, UL1778/
CSA-C22.2 No. 107.3, or the Standard for Fire Protective Signaling Devices, UL1481/ULC-S527.
Be sure to use the recommended cabling, which is the shielded wiring required for use on all modules.
Communication circuits and network components connected to the telecommunications network shall be
protected by secondary protectors for communication circuits. These protectors shall comply with the
Standard for Secondary Protectors or Communications Circuits, UL 497A. These protectors shall be used
only in the protected side of the telecommunications network.
A metal conduit must be used when connecting all UL enclosures. This is required for all UL installations.
Do not exceed 1000 receiver accounts for UL.
All receiving equipment shall be completely duplicated with provision for switchover to the backup system
within 30 seconds. The backup system shall be fully operational within 6 minutes of the loss of the primary
system. (This allows 30 seconds for the backup system to be fully energized and connected to the necessary
communication lines and other devices, followed by 5-1/2 minutes for the system to boot up, conduct
memory tests, file system check, security verifications, and prepare for full system operation). The backup
computer must have the capabilities of the primary, such as memory, speed, and the like.
Failure of the main computer system, hard disk, and alarm monitor must be programmed to switchover to
the backup system, and indicate an audible, or obvious visual indication.
A fault tolerant system may be used in lieu of complete duplication of the system if every component in the
fault tolerant system, including the software and power supply, is duplicated.
All OnGuard system solutions that are to be UL1076 compliant systems must also meet the requirements
specified in Section 25A of the UL1076 (Proprietary Burglar Alarm Units and Systems Standard for Safety).
This requirement outlines the need for host monitoring redundancy. Host monitoring redundancy can be
accomplished in many ways, but the standard is clear as to receiving equipment methods, recovery time,
surge suppression and system configurations. Contact Lenel if configuration assistance is required.
All inputs must be supervised for UL1076 installations.
Priority features (alarm, loss of line voltage, opens, shorts, etc.) must be programmed for an audio and a
visual indication at the central supervisory station equipment, and to create a printout. The condition must be
recorded. This indication shall not be silenced without acknowledgement.
Bypass of protective features, such as auto-bypass for forced arm, must not be programmed for UL.
If a modem or Ethernet is used as a method of communication, the connection must be maintained
continuously.
Use Marking — Commercial, Proprietary, Multiplex, Encrypted Line Security Burglar Alarm System
Control Unit and Access Control Unit.
48 —
revision 7
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