Friday, 03 April 2015 12:15

Countdown to Vegas, Baby!

ISC West will be upon us soon

ISC West is one of the longest continually running security shows in the physical security business. It’s a place for networking, education and learning about new and emerging technologies. And LifeSafety Power will have a huge presence at this year’s show – bigger than ever – as we step up our game with a brand new booth at #13115 and interactive displays. Heck, we’ll even have a comfy place to sit and watch PowerPro TV videos.

LifeSafety Power Power Cube April 2015

At the show, you’ll be able to see the ‘Power Cube’ – featuring LifeSafety Power’s Unified Power Solutions, configured on a front-and-center display. This innovative enclosure family integrates the industry’s most widely used access controller board power solutions, including Mercury, AMAG Technology and Software House. FlexPower’s Unified Power Solutions yield a smaller installation footprint, providing multiple efficiencies and greater effectiveness in the design and specification of integrated access control power solutions.

Best Solutions for Most Widely Used Access Security Controllers

The FlexPower Unified Power Solutions family includes the MCLASS™ for Mercury controllers, ACLASS™ for AMAG controllers and SCLASS™ for Software House controllers. These solutions take up less wall space, provide servicing efficiencies and include other embedded features that equal installation and labor savings for systems integrators.

We’ll also be featuring the FlexPower® Multi-Site Manager (MSM-200), entered in the 2015 Security Industry Association (SIA) New Product Showcase.  The MSM-200 is a smart, network-based appliance that securely and proactively manages LifeSafety Power’s power management system across any enterprise or multiple customer locations. The web-based software and hardware solution uses a Virtual Private Network (VPN) server to securely interface with multiple NetLink communication modules and iSCAN® SmartPower Systems, providing real-time health activity of power systems on the network. NetLink is the industry’s only patented network power management system.

The MSM-200 lets systems integrators and users assess, manage and monitor even the most complex campuses with multiple sites and buildings - such as healthcare facilities and schools - from the Internet and anywhere in the world.  To deploy, a single network connection is made at the MSM Server which then creates a VPN and automatically locates and adds LifeSafety Power network devices. While NetLink or iSCAN monitors the power system, MSM consolidates the monitoring of all devices to a single computer screen.

There will be much more to explore at the LifeSafety Power booth #13115 at ISC West in Las Vegas, so be sure to stop by and see why we are a leader in award-winning, smarter power solutions.

Published in Blog

Earth Ground Fault Detection was developed for the Fire Alarm industry to give enhanced fault detection on NAC loops.  Although Earth Ground Fault Detection is not currently required in access control applications, it can still be a useful feature - provided your system is compatible.

Earth Ground Fault

What is Earth Ground Fault Detection?

Despite what its name might imply, Earth Ground Fault Detection does not detect a missing earth ground connection to your power supply.  Instead, it detects a connection between earth ground and any positive or negative output circuit in the system.  This includes any part of the system that is common grounded with the power supply.  If the power supply with earth ground detection is powering an access control panel, any earth ground faults on the access panel circuits (readers, etc) will show on the power supply.  If your access control panel is then common grounded with your 24VDC CCTV system's DVR, any faults on the CCTV system would also show on your power supply.  Because of this, it is important to be aware of what is connected to your system - especially when troubleshooting.

How Does Earth Ground Detection Help?

An earth ground fault does not mean you necessarily have an immediate problem.  It is simply a warning that one leg of a circuit somewhere is either partially or fully shorted to earth ground.  Usually, a single short to earth ground causes no problem in the operation of the system.  However, a second short to earth ground - even on a completely unrelated circuit, can cause a direct short circuit, leading to blown fuses, erratic operation, or even a fire.

When should I not enable Earth Ground Fault Detection?

Earth Ground Fault Detection should only be enabled on one piece of equipment within the system.  In access control, this is usually the power supply.  If the access system is common grounded with the fire system, the FACP may already have earth ground detection enabled.  Also, if there are multiple power supplies connected to the access system, only one of these supplies should have Earth Ground Fault Detection enabled - this includes two supplies within the same enclosure.

In many access control applications, even if you follow all of the rules and none of your wiring or load devices is shorted to earth ground, you may still show an Earth Ground Fault.  This is usually caused by access control panels that don't "play nice" with earth ground fault detection.  As stated above, Earth Ground Fault Detection is not a requirement in access control.  Many access panels require shielded communications circuits and the panel manufacturers connect these shields to earth ground and DC ground for better shielding or other RF noise or transient requirements.  In these cases, the only option is to disable the Earth Ground Fault Detection entirely.

Troubleshooting Earth Ground Faults

For more information, our application note AN-32 (Troubleshooting Earth Ground Faults) goes in-depth on how earth ground fault detection works and the best method of troubleshooting earth ground fault conditions.  And as always, our Technical Support Department is always here to help.

Published in Blog