Tag Archives: internal amp

Internally Speaking: Applications Using the EVS-INT50W

I wrote a blog in May 2015 introducing our new EVS-INT50W internal amplifier. An overview of the product was provided along with a brief mention of applications. In this installment, I would like to discuss a few specific applications: Day Care Centers, Assembly Occupancies, K – 12 Educational Facilities, and Lodging.

evs-int50w-diagram1Day Care Centers is an ideal application for the internal amplifier because of limited wall space for mounting external hardware and the requirement for the 520Hz low frequency output. Many jurisdictions are adopting the 2012 edition of the International Building Code (IBC) which states that a manual fire alarm system that initiates the occupant notification signal utilizing an emergency voice/alarm communication system shall be installed in Group E occupancies.  Day Care facilities fall under a Group E occupancy. In addition, Section 18 of the 2013 edition of NFPA 72 states that effective January 1st, 2014, audible appliances provided for the sleeping areas to awaken occupants shall produce a low frequency alarm signal.

As defined by NFPA 101, an Assembly Occupancy is an occupancy used for a gathering of 50 or more persons for deliberation, worship, entertainment, eating, drinking, amusement, awaiting transportation, or similar uses. A common example of an assembly occupancy is a place of worship where the area of congregation will require voice evacuation. The EVS-INT50W is perfect for this application because vital wall space is saved while providing a 50 watt single speaker circuit amplifier that meets required decibel output and audibility requirements

K – 12 Educational Facilities offer the ability to use the internal amplifier with the flexibility of integrating distributed amplifiers. As with the Day Care Center application, K through 12 educational facilities fall under a Group E occupancy. Since many classrooms and other gathering locations will have an occupant load of greater than 30 people, these facilities are prime candidates for voice evacuation and emergency communications. The 5820XL-EVS and the EVS-INT50W will cover an area or areas of the facility while distributed amplifiers will cover other areas of the facility. This is quickly becoming a popular method of distributing voice.

evs-int50w-diagram2Due to recent code updates and state/local legislation, low frequency is becoming common in the lodging industry. Section 18 of the 2013 edition of NFPA 72 states that effective January 1st, 2014, audible appliances provided for the sleeping areas to awaken occupants shall produce a low frequency alarm signal. Full coverage for low frequency voice evacuation can be accomplished by using a combination of the internal amplifiers and the distributed EVS-100W amplifiers. As with the K – 12 Educational Facilities application, the 5820XL-EVS and the EVS-INT50W will cover an area or areas of the lodging facility while the distributed EVS-100W will cover other areas of the facility.

Do you have applications where the EVS-INT50W would be helpful? Please let us know by clicking on the Leave a Reply link above to enter your request.  Click here to download the EVS-INT50W data sheet.

 

About the Author
Mark Indgjer is a Product Marketing Manager with Silent Knight.  Mark joined Silent Knight in 1988 and is responsible for new product development, product marketing and much more.  Mark is also NICET Level II certified.​

Tech Tip: EVS-INT50W Power Wiring

The EVS-INT50W is an amplifier that offers a single speaker circuit capable of supporting up to 50 watts of power and is compatible with version 15 of the 5820XL-EVS. Although it is similar to the distributed 50, 100, and 125 watt amplifiers, there are subtle differences.

One of the first things you will notice is that the EVS-INT50W does not come with an enclosure. The reason for this — and why it is described as an internal amplifier — is that it mounts in the 5820XL-EVS cabinet. No external cabinet or hardware is required: this provides the benefit of saving valuable wall space as well as installation time and money.

The other difference you will see is that there is no primary AC and battery backup. The EVS-INT50W is powered by the 5820XL-EVS panel. This is where it can get tricky. To power this amplifier, one of the 6 Flexput™ circuits on the 5820XL-EVS will be programmed for Constant Auxiliary Power and run to the power input on the EVS-INT50W. The SBUS connection, which is normally 4 conductors, will be 2 conductors for the A and B data connections. Do not use the SBUS power (- and +) to power the amplifier. The amplifier draws close to 3 amps in full load. SBUS power only supplies up to 1 amp. Be sure to account for the power draw in your 5820XL-EVS battery calculations.

evs-int50w-tech-tip2

The internal amplifier is an addressable device, so be sure to set the dipswitches on the unit before powering it up. Also ensure that the panel is programmed to look for the address you set on the amplifier. After this, all options are programmable, such as mapping the speaker output for proper activation, 25 or 70.7 Vrms operation, Class A or Class B speaker wiring, and 520 Hz low frequency output.

Have you installed the EVS-INT50W? Please let us know your experience by clicking on the Leave a Reply link above to enter your request. Click here to visit the EVS-INT50W web page.

 

About the Author
Bill Root is the Technical Support Supervisor for Silent Knight. Bill joined Silent Knight in 1988 and is responsible for managing applications and technical support across the Silent Knight product line. Bill is also NICET Level II certified.

Trade Show Breakdown – After NFPA 2015

NFPA 2015 did not disappoint! Hopefully you were able to attend the expo and hit up a few of the over 120 educational tracks and sessions offered this year. The booth traffic stayed steady throughout the show and the new products got a lot of attention.

In case you missed the expo, here are a few products we highlighted this year:
Fire/CO Detector
Silent Knight’s SK-FIRE-CO addressable combination fire and carbon monoxide (CO) detector drew a lot of attention. With so many regions now requiring Fire and CO detection, the product fits tons of applications. This device not only protects people from CO leaks and fires all-in-one, but also saves the costs of independent smoke and CO detectors, and all the related parts and wiring. Plus it maintains the aesthetics of any room. It uses four sensing elements to provide the best fire detection and false signal rejection available, reducing nuisance alarms and provides a separate carbon monoxide signal. When used with the B200S/B200S-LF intelligent sounder base, the system ties together by providing the appropriate temporal signals, and because it can synchronize with System Sensor A/V devices, it becomes part of the evacuation signal vs. using a separate device.

Low Frequency Sounders, Strobes & Bases
Shown in connection with the Silent Knight fire panels were the SpectrAlert® Advance Low Frequency Sounders, Bases and Sounder Strobes. These are the first UL-listed low frequency (520 Hz) notification appliances to meet the NFPA 72® 2010/2013 requirements for new sleeping spaces. These devices were designed to easily integrate into new or existing panels’ notification appliance circuit (NAC) line and provide the required audibility and square wave tone to awaken individuals.

5820XL-EVS with Internal Amplifier (EVS-INT50W)
Ideal for schools, hospitals, government and military facilities or other places of assembly, the Silent Knight 5820XL-EVS is an excellent choice for buildings considering an emergency communication system (ECS) or fire alarm upgrade, or for those located within a municipality that will soon adopt current NFPA code ECS requirements. The EVS-INT50W is a 50 watt, single speaker circuit amplifier. What makes this amplifier unique is its ability to be mounted and housed in the 5820XL-EVS cabinet. This new amplifier mounts on the standoffs where 5815XL point expanders are normally mounted, thus saving valuable wall space.

If you’ve never attended an NFPA Conference or Expo, it’s a wealth of information for both product and industry! If your business is involved with fire, don’t miss next year’s conference at the Mandalay Bay Convention Center in Las Vegas, NV, June 13 – 16.

NFPA 2016
Did you go to NFPA 2015?  If so, what was your favorite part?

See you in 2016!

About the Author
Elizabeth Richards is the Manager of Communications for the SED Channel – Fire-Lite Alarms, Honeywell Power, and Silent Knight. Liz joined Honeywell Fire Systems in 2003 and is responsible for the communications, collateral, messaging, and events for all three brands.

How To: Installing the Internal Amp (EVS-INT50W)

We are excited about a new product release for the 5820XL-EVS family.  The EVS-INT50W is a 50 watt, single speaker circuit amplifier.  What makes this amplifier unique is its ability to be mounted and housed in the 5820XL-EVS cabinet.  This new amplifier mounts on the standoffs where 5815XL point expanders are normally mounted, thus saving valuable wall space.Internal Amp install

The EVS-INT50W requires a total of 3 pairs of wires for installation: 2 for the 24 VDC power, 2 for the SBUS data and 2 for the VBUS.

  • 24 VDC constant power can be obtained from any of the 6 Flexput™ circuits programmed as constant auxiliary power. Eliminating an additional AC circuit and backup batteries to power the amplifier saves time and money.
  • The EVS-INT50W is an intelligent device requiring SBUS wiring to the 5820XL board assembly. The A and B terminals on the amplifier will wire to the SBUS Out A and B terminals on the 5820XL.
  • The amplifier requires a VBUS (Voice BUS) connection to the VCM (Voice Command Module) located on the dead front door of the 5820XL-EVS cabinet. The VBUS carries the recorded voice messages and microphone to the amplifier.  The 2 wire VBUS runs from the VBUS out on the VCM to the VBUS terminals on the amplifier.  Since the VBUS is an audio circuit, shielded wire is recommended.
  • Using shielded wire, connect the speaker circuit to the Speaker Out terminals on the amplifier. The speaker circuit requires a 15K end of line resistor.  There is an option to wire the speaker circuit as Class A.  In this case, an end of line resistor is not required and the shielded pair would return to the Speaker In terminals on the amplifier from the last device on the circuit.

Before applying power, use the dipswitches on the EVS-INT50W to set the address.  You will then need to program the EVS-INT50W into the 5820XL-EVS, by following these steps:

  • Open your program file in SKSS and click on the “System” tab. Under “Module”, right mouse click and select “Add”.  The “Add Module” window will appear and you will scroll down to highlight the EVS-INT50W voice amplifier.  Select “OK” and ensure that the ID of the module matches the ID set with the dipswitches.
  • Select the “Output Groups” tab. Scroll down to Module 34 and right click on the Type box across from Flexput™ circuit you want to use for constant auxiliary power.  Select the “Aux. Power” bullet and ensure that “Constant” is selected in the drop down.  Save the configuration and download to the panel.

You have successfully installed the EVS-INT50W internal amplifier!

The EVS-INT50W works with version 15 of the 5820XL-EVS and version 3.64 of SKSS.  Download SKSS for free and check out our new EVS-INT50W video at www.silentknight.com.

You can also click the link to download the EVS-INT50W sell sheet.

About the Author
Brian Brownell joined Honeywell in 2011 and brings 30 years of fire alarm industry expertise to his current role as a Technical Trainer for Silent Knight. ​

Amp Up Your Game

We are excited about the recent release of the Silent Knight model EVS-INT50W internal amplifier.  This new amplifier has the unique feature of being mounted and housed in the 5820XL-EVS cabinet, thus saving valuable wall space where installation area of accessory devices is constricted.  In turn, this saves time and money by eliminating accessory mounting and wiring. Register to attend an upcoming webinar on the 5820XL-EVS, its new internal ampinternal amplifier and other components of this system.

The EVS-INT50W is a 50 watt amplifier that provides one Class A or Class B speaker circuit.  Wiring is a total of 6 conductors – 2 for the A and B SBUS data terminals, 2 for the 24 VDC constant auxiliary power, and 2 for the VBUS.  Notice that the amplifier is not powered by AC and backup batteries, which saves the expense of an electrician running another AC circuit and additional battery costs.  The 24 VDC constant power is obtained from one of the Flexput™ circuits on the 5820XL-EVS programmed as constant auxiliary power.

After the amplifier is addressed with the dipswitches and wired to the panel, it can be added to the panel configuration and activated as required using the same methods as other outputs on the panel.  In addition, the EVS-INT50W can be programmed to provide the 520 Hz low frequency output as required in sleeping areas.

Ideal for smaller applications such as day care centers and places of assembly, or used in conjunction with the distributed amplifiers for larger installations, the EVS-INT50W is another tool in your tool belt to win jobs.

Click here to download the EVS-INT50W sell sheet.

About the Author
Mark Indgjer is a Product Marketing Manager with Silent Knight.  Mark joined Silent Knight in 1988 and is responsible for new product development, product marketing and much more.  Mark is also NICET Level II certified.​