PoE Powered Access Control Tutorial

By: Brian Rhodes, Published on Jan 19, 2018

Powering access control with Power over Ethernet is becoming increasingly common. 

However, access requires more power than cameras, and the problems of not having enough are significant, especially if unsecured doors, unresponsive doors, or dead readers are the result.  Considering access impacts life safety, special effort needs to be taken to ensure that mistakes are not made in powering. 

In this tutorial, we teach:

  • Why PoE for Access Is Useful
  • PoE versus PoE+ Use For Controllers
  • Why 4 Doors Is Typically The Max PoE For Controllers
  • How To Calculate PoE Power Load For Access
  • How To Check Available Field Power
  • The Code Impact Of Using PoE
  • Cost Savings From PoE Powered Access
  • 4 Common Problem Areas When Using PoE Powered Access

At the end, take the 7 question quiz on PoE Powered Access Control to test your knowledge.

Note: This guide was initially published in 2015 and substantially updated in 2018.

Where PoE For Access Is Useful

PoE is useful in retrofit access control to bring power to the door, instead of installing high voltage electrical for the system first, an expense that can often cost hundreds of dollars per door.

Without PoE, power at the door involves extending or running new circuits from breakers to openings in new conduit with new outlets, power supplies, enclosures, and junction boxes, while PoE routes power through the same cable that connects door devices to an ethernet network.

******** ****** ******* **** ***** over ******** ** ******** increasingly ******. 

*******, ****** ******** **** power than *******, *** *** problems ** *** ****** enough *** ***********, ********** if ********* *****, ************ doors, ** **** ******* are *** ******.  *********** access ******* **** ******, special ****** ***** ** be ***** ** ****** that ******** *** *** made in ********. 

** **** ********, ** teach:

  • *** *** *** ****** Is ******
  • *** ****** ***+ *** For ***********
  • *** * ***** ** Typically *** *** *** For ***********
  • *** ** ********* *** Power **** *** ******
  • *** ** ***** ********* Field *****
  • *** **** ****** ** Using ***
  • **** ******* **** *** Powered ******
  • * ****** ******* ***** When ***** *** ******* Access

** *** ***, **** the * ******** **** on *** ******* ****** Control ** **** **** knowledge.

****: **** ***** *** initially ********* ** **** and ************* ******* ** 2018.

Where *** *** ****** ** ******

*** ** ****** ** retrofit ****** ******* ** bring ***** ** *** door, ******* ** ********** high ******* ********** *** the ****** *****, ** expense **** *** ***** cost ******** ** ******* per ****.

******* ***, ***** ** the **** ******** ********* or ******* *** ******** from ******** ** ******** in *** ******* **** new *******, ***** ********, enclosures, *** ******** *****, while *** ****** ***** through *** **** ***** that ******** **** ******* to ** ******** *******.

[***************]

PoE ********

******* ** ***** *** for ******, *** *********** any ***********, ** ************* how **** ***** ** available.

*** ***** ***** ** PoE *** ******** ****:

  • ***.*** ******** ** ** **.** and ** **** ** most *** ******* ****** Controllers.
  • ***.***, '****' ***, ******** ** to **.** *** **** only ** * ***** fraction ** ******** *********, generally ***** ******** ** be **** ** ******* weather ************. *******, '**' is compatible **** ********* ********** 'af'.

** ****** *******, ***.*** use ** *** ******, but **** *********** *** offer * ******* ***** it *** ****** ****** or ****-**** ******* *** powering **** ****** ***** or *******. *** *******,****** ****** * ***.*** Net2 **** **** ****** *.**/*** ** output:

*** **** ** ***, both ** * ******* resource *** * ************ features, *** *** *** ***** *** ** Video ************.

PoE **** ********** *** *** ** ****** *******

*** ******* ****** ************ is *** *** ** directly ***** *** **** **********, **** *** ********** powering attached *** ******* ****** control ******* **** ******* and ** **** *****, locks. *** ********** ******** some ** *** *** power ** ******** *** its *** *********, *** then ****** ** ******** of **** ** **** to ********* ******. ******* this ***** ** ******* up ** *** ********* ports ***** ** *** device **** ********* ** it.

PoE *********** ********** ******* ** * ***** ** ****

*********** **** **** ** more ******** ***** *** *** uncommon, *** *** ****** fact **** ***** *** controller ****** ** *******, the ********* ****** ********* 'passed ****' ** ***** devices ****** ** **** partitions ** *** **** to ***** *** ***** and *******.

****** ** *******, ***** a ****** ****** ***** power **** * *** source, **** ****** *******, controllers ********** *** *** just *** ***** ****** in * *****. **** PoE ******* ***** ** exhausted **** **** *** controller *** ******* ********* one ** *** *****.  As * ******, *** options *** ****** *** single ** ****** **** IP ***** *********** **** Mercury **-****, *** **** EVO, *** *** **** A1001.

Field ******** ******** *******

***** **** ***** ** devices ******* ***** **** *** controller - *******, ***** and **** *******. *** much ***** ***** ******* need ***** ** ******** in *********** ******* *** will ** ********** *** each *******.

  • *******: *** **** ****** device ********* ****** *****, most ****** ** **** readers *** ********* ** operate ** ****** ***** sourced **** **** *** controller.
  • *****: ********* ** **** types, ***** ********** ****-******* power *** *** ** optional.  *** *******, ***** Strikes *** ** **** to ******* *** ** PoE ***** *******, ******** typically ****** ** **** draw ************* **** *******.
  • **** *******: ** **** *****, other ******* *** **** power **** * *** supplied ********** *** **** position ** **** ***, but **** ** *** commonly ****** ** ****.

** **** *****, *** total ***** ****** *** all ***** ******* **** exceed **** *** ** able ** *******. ** a ******, ******** ** all *** ********** ***** requirements *** *********** ******* the ******** ***** ** critical *** ***** ********** opening.

Three ***** ** *********

*****, ***** **** **** of *** *** **** controller ******* (*.*., ***.*** or ***.***). ****, ****** how **** ****** ***** max *** ********** ********. Then ******* ** *** total ***** *********** ***** of *** ******* ***** power **** *** *******.

******** ********

** *** ***** ******* below, **** **** ****** power ** *********:

* **** ** ********** by******* ******** ****** ********** ***.*** ***, *** passing ******* * *** of *** ** ** field *******. ** **** controller,*** **** **** ****** ********* * *** ** ** ** of *****, *** * *** **** ****** ******* *** ** ** a ********** **** ***** are ********* *** **** power.

*** ***** ***** ******** by *** ****** *** strike ** *** ** from *** **********, ******** to *** ** ********, which ** **** **** enough.

****** ********

*******, ** **** ****** example *****, ****** *** insufficient ***** ** *********.

* **** ** ********** by ******** ******** ****** ********** ***.*** ***, *** passing ******* * *** of *** ** ** field *******, ** **** **********,*** ***** ***** *******(*** * **** **/**** out ***********) ******* * max *** ** ****, and ******* **** ***-* ************* *** ** ** * continuous **** ***** *** connected *** **** *****.

*** ***** ***** ******** by *** ******* *** strike ** *** ** from *** **********, ********* the ********* ***** ** over *** ** ******* no ******* ** ********** obstacles *********.

Available ***** *****

***** *** ************* ***** of *** ********** ** determine *** **** ***** is *********. *** *******, **** *** ********** **** ***** ***** *** ********* ***** values:

********* ** **** *****, the ******* ********* ***** power *** ********** ******* vary ** ****.  *** example, *** '******' ********** offers ** ** *** mA *** * ****** using **.*****, ** ***** 7.1W.  

*** '*** *******', ** contacts **** ******* ****-**** power ** ******* * lock, ****** *** ****** output ******* ******* *** output ******** *** ******* as * ******. ***** this ********** ********** ****** either ** ** ** VDC ********** *******, *** all *********** **. ******* will all *********** ****** ** or ***** **** **** power ** * ********** port.  ** **** *****, the ********** ******** *** power ******* ****** *** output *****, *** ***** controllers ****** ****** * controller *** ***** ***** output *** *** *****.

Max ***** ******

******* *** ***** ** how ***** ***** ****** varies ***** ** ***** source ****. ********* **** ***** PoE *** *****, ******* available ***** ** **** than **** ** ******** with ******** *** ******* power ********:

**** **** *** ***** power ********* **** *** (9.6W) is **% **** **** ***** (14.4W) *** **% **** than ***** (**.**). 

Code ******

**** ********* ***** ***** PoE ** ***** ***** outright, **** ** ******** power ****** ****** ** available. ******** ***** *** complicate ***** *** *** *****.  Perhaps *** **** ****** issue ** ***** *** "Request ** ****' *********** that ******* **** ***** when *******. *** **** applicable ****, *** ****.*.*.*.*(****) *******:

"* ****** ********* ****** (push ******)***** ****** ** ****** interruption ** ***** ** the **** – *********** of *** ****** ******* system ***********. **** *** **** button ** ********, *** doors **** ****** ******** for ** ******* *******. The **** ****** **** include ******* ******* “**** to ****” *** **** be ******* **” ** 48” ********** ***** *** floor *** ****** *’ of *** *****. ***** access **** ** ******** to *** **** ******."

**** **** ********* ********* controlling **** ***** ** way ** ******* ******* on *** **********, *** mandates * ****** ***** in **** ***** ******* interruption.  ** *** **** least, * **** ****** must ** ********* ** series ******* * *** source *** * **** lock, *** **** **** reduce **** ** '**** power **** ** ******', even ** *** ****** source ** ** ** fully '*********** ** *** ****** control ****** ***********'.

*** ***** ******* *** formal **** ********* ******, see **** ****** ****, ***, and *** ***** *** Standards *** **** ******** ******** and ****** **** ********.

Cost Savings ***********

***** *** ** ***** doors ***** **** ~$*** - $250 *** ****, ***** the *********** ** ***** cable, ***** ********, *** labor. For *******, *** ***** eliminate:

  • ***' ** **/* ***** Cable: $**
  • ** **/***** ***** ******: $50
  • ************ ***** *** *****: $60 - $***

******** ** ** ******* door **** ** ~$*,***, this ******* *** ** quite ***********.

Potential *** *** ****** ********

**** **** ******** *******, PoE *** ******* *********** issues **** ******** ***** supplies ** ***. *** example:

  • ***-**** ****** ****: **** *** ***** strikes, ********** ***** ******** for *** ***, *** vulnerable ** ************ ******* and ******* **** **** power, **** **** ****** can ****** ***** *******. While *** ** *** the **** ***** ** these ******, ******* ***** PoE ***** ***** ******* more ******** ********** *** are **** ********* ** typical ****.
  • ********: ******* ******** ******* continually **** ***** *** are ********** ****-***** *****, many *** *********** *** not ***** **** ******** rated *** ********** ***. Intermittently ******** ******* ** deadbolts *** ****** ****** limits, *** *********** ******* amperage ** ****** ****** are ***.  ******** ******* powering ******** ******** **** the **********, ** *** of ***, *** ******** stated. 
  • ****** ***** *****: ** ********, ** PoE ** ****, *** demand *** ********** ***** on ******* ******* *** be ***********. ** *** doors **** ******** **** power **** ***, **** specific ****-************ ****** ***** may ** **** ******* than * ******* ******** used ******* ****.  ** many *****, ******** *** access ******* *** ******* from ***** ******* ********* devices ** *** ******* for ****** ***** **********, and ********** ******** ***** supplies *** ******* *** less ****** ** ******.
  • ******/******** *** ****** ***** Power ******: * ****** ******** "When ***** * ****** firmware ******, *** ***** is ****. **** ** is * ****** ******, the ************* ** ****** lost ***** ****** *** upgrade. **** ** ** ****** control ******, *** ******* can ** *************** ********* or ******* *****." *** ******* ** caused ** *** ****** falling **** ****** firmware *******, *** **** then *** *********** *** again **** *** ****** brings *** ****** **** up. ** ******** *** risk,*** *** ********** ** *******, ***** for ~$*** *** ******* to ****** *** '***** gap' ***** * ****** is *********** *******.

Quiz ********

**** ****** ******* ****** ******* Quiz.

[******: **** ******** *** originally ********* ** **** and ************* ******* ** 2018]

Comments (11)

UL certification is a minor point, but worth clarifying.

If an access system is not UL certified while using PoE as a power option, or the PoE PSE (switch or midspan) is not also UL certified to the same standard (often UL294), using PoE may leave the entire system non-compliant.

This exception will be noted on spec sheets, like this:

However, it may be buried in the compliance section, general notes, or called out in the power section like above.

Mostly customers demands for PoE based controller to supply power for door locks to avoid wiring and keep installations clean. (specially in IT and corporate customers). many times it is difficult to convince customer to use separate power for locks as they question like then why i need PoE for controller because anyhow i need separate supply ??

We generally suggest them to use low powered PoE locks (upto 600 and 1200 Lbs) which works fine for inside doors (mostly glass and wooden doors).

recently we installed ALGATEC PoE locks for same.

If you guys have any specific low powered PoE locks details which works fine then please share.

Brian,

Installer also need to take care of POE switch output power.

As access control devices need full powered PoE port switch. i.e. Max output per port (15.4W as per 802.3af standard)

Total output power of poe switch= per port output power x No. of port on switch

I just noticed that the example you use for not recommending powering maglocks via PoE is our diagram and thought I'd drop a quick note that about 18 months ago, we performed cycle testing with a Schlage model 70 maglock powered off of an open collector (over PoE). After well over 1 million cycles both lock and controller were perfectly fine. I doubt we have updated all marketing collateral, but it's really no longer an issue as long as the power requirement of the maglock doesn't exceed the available output.

Hi Wayne,

It might be PoE+ rather PoE?

it is all about total power consumption of device and reader connected with controller.

how much power rating of Schlage maglock ?

A member wrote in regarding a potential risk of PoE with access when switch firmware is updated:

Another issue we ran across is the vulnerability of PoE powered access control panels.  When the IT department does a switch firmware update, PoE power is lost.  When it is a camera system, the inconvenience is merely lost video during the upgrade.  When it is access control panels, the penalty can be unintentionally unlocking or locking doors.

A solution we found is an in-line PoE back up system by Energy Re-Connect. I am sure their are others on the market, but these seem relatively inexpensive. 
 
Like video, networked access systems often entail close working relationships with IT groups. The example above is a key example of why that relationship should be maintained and close!

I emailed the contact on the PoE UPS device you reference in the article.

 

Do you have any experience or opinions?

We have a test / evaluation of those planned coming up.  I believe Ethan ordered them this week, so those results will publish this fall.

A member mentioned them as being a good solution in his experience using them.  

While this is a very good article, most of the problems highlighted have been resolved by TYCO, in their patent for PoE in Access control. By use of an intelligent power supply and using the backup battery the power supply can supply the current surges associated with mag locks and strikes. They have been shipping such as equipment for 10 years.

...resolved by TYCO, in their patent for PoE in Access control...

What's the patent# ?

RBH Access has IEEE 802.3at compliant controllers with onboard battery backup to resolve power fluctuations issues plus sufficient power overhead to power low power accessories such as electric door strikes. Mechanical design options include 19 inch rack model.

Read this IPVM report for free.

This article is part of IPVM's 6,307 reports, 842 tests and is only available to members. To get a one-time preview of our work, enter your work email to access the full article.

Already a member? Login here | Join now

Related Reports

Low-Tech Access Control: Master Keying Explained on Jan 09, 2020
Mechanical keys are one of the most fundamental forms of access control. 'Master Keying' can allow individually different credential keys to...
Wireless / WiFi Access Lock Guide on Nov 12, 2019
For some access openings, running wires can add thousands in cost, and wireless alternatives that avoid it becomes appealing. But using wireless...
Access Control Door Controllers Guide on Oct 22, 2019
Door controllers are at the center of physical access control systems connecting software, readers, and locks. Despite being buried inside...
Securing Access Control Installations Tutorial on Oct 17, 2019
The physical security of access control components is critical to ensuring that a facility is truly secure. Otherwise, the entire system can be...
Altronix Claims Tango 'Eliminates Electricians' on Oct 15, 2019
Power supply provider Altronix claims its new Tango power supply 'eliminates the need for an electrician, dedicated conduit and wire runs'. In...
'Bunker Busting' Wireless Access Startup: Sure-Fi Profile on Oct 03, 2019
An access startup is claiming its 'bunker busting' wireless Wiegand radios can punch through 'any obstruction'. We examine their offering,...
Assa Acquires LifeSafety Power on Sep 04, 2019
Assa Abloy is acquiring LifeSafety Power, adding to their growing collection of access control brands like Mercury, August, Pioneer Doors, and...
Siklu $400 Compact 60GHz Radio on Jul 24, 2019
Siklu first entered the video surveillance market with a $6,000 per link solution, is now aiming down market with their newest 60GHz wireless...
Access Control Job Walk Guide on May 22, 2019
Significant money can be saved and problems avoided with an access control job walk if you know what to look for and what to ask. By inviting...
Locking Down Network Connections Guide on Apr 23, 2019
Accidents and inside attacks are risks when network connections are not locked down. Security and video surveillance systems should be protected...

Most Recent Industry Reports

JCI / Tyco Security Products Layoffs on Jun 05, 2020
Johnson Controls / Tyco Security Products has confirmed COVID-19 related layoffs, expanding upon the April coronavirus cuts the company previously...
EyePark Presents Mobile Driver Authentication on Jun 05, 2020
EyePark presented its long-range QR code parking verification platform at the May 2020 IPVM Startups show. A 30-minute video from EyePark...
Bleenco "Under The Tongue" Temperature Detection Examined on Jun 05, 2020
"Say aah", says Bleenco, a PPE detection video analytics company, offering a different method for measuring body temperature with a thermal...
Hikvision and Uniview Entry Level Thermal Handheld Cameras Tested on Jun 05, 2020
While most screening systems cost $10,000 or more, manufacturers such as Hikvision and Uniview have now released handheld models for $1,000 or...
Sequr Presents HID based Cloud Access Control on Jun 04, 2020
Sequr presented HID based Cloud Access Control at the May 2020 IPVM Startups show. Inside this report: A 30-minute video from Sequr...
VergeSense Presents People Tracking Sensor on Jun 04, 2020
VergeSense presented its people tracking sensor and social distancing insights at the May 2020 IPVM Startups show. A 30-minute video from...
FLIR A Series Temperature Screening Cameras Tested on Jun 04, 2020
FLIR is one of the biggest names in thermal and one of the most conservative. While rivals have marketed fever detection, FLIR has stuck to EST...
"Fever Camera" Show On-Demand Watch Now on Jun 03, 2020
IPVM has successfully completed the world's first "Fever Camera" show. Recordings from both days are posted at the end of this report for on-demand...
Cobalt Robotics Presents Indoor Security and Access Robots on Jun 03, 2020
Cobalt Robotics presented indoor security robots at the May 2020 IPVM Startups show. Inside this report: A 30-minute video from Cobalt...
Dahua Sues Ex-North American President, Says Legal Typo on Jun 03, 2020
Dahua's former North American President Frank Zhang claims he is owed almost $11 million but Dahua counter claims it is just a "scrivener's error",...