PoE Powered Access Control Tutorial

Author: 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.

******** ****** ******* **** ***** **** ******** ** ******** ************ common.

*******, ****** ******** **** ***** **** *******, *** *** ******** of *** ****** ****** *** ***********, ********** ** ********* *****, unresponsive *****, ** **** ******* *** *** ******. *********** ****** impacts **** ******, ******* ****** ***** ** ** ***** ** ensure **** ******** *** *** **** ** ********.

** **** ********, ** *****:

  • *** *** *** ****** ** ******
  • *** ****** ***+ *** *** ***********
  • *** * ***** ** ********* *** *** *** *** ***********
  • *** ** ********* *** ***** **** *** ******
  • *** ** ***** ********* ***** *****
  • *** **** ****** ** ***** ***
  • **** ******* **** *** ******* ******
  • * ****** ******* ***** **** ***** *** ******* ******

** *** ***, **** *** * ******** **** ** *** Powered ****** ******* ** **** **** *********.

****: **** ***** *** ********* ********* ** **** *** ************* updated ** ****.

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

*** ** ****** ** ******** ****** ******* ** ***** ***** to *** ****, ******* ** ********** **** ******* ********** *** the ****** *****, ** ******* **** *** ***** **** ******** of ******* *** ****.

******* ***, ***** ** *** **** ******** ********* ** ******* new ******** **** ******** ** ******** ** *** ******* **** new *******, ***** ********, **********, *** ******** *****, ***** *** routes ***** ******* *** **** ***** **** ******** **** ******* to ** ******** *******.

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

PoE ********

******* ** ***** *** *** ******, *** *********** *** ***********, is ************* *** **** ***** ** *********.

*** ***** ***** ** *** *** ******** ****:

  • ***.*** ******** ** ** **.** *** ** **** ** **** *** enabled ****** ***********.
  • ***.***,'****' ***, ******** ** ** **.** *** **** **** ** a ***** ******** ** ******** *********, ********* ***** ******** ** be **** ** ******* ******* ************. *******, '**' ** ********** with ********* ********** '**'.

** ****** *******, ***.*** *** ** *** ******, *** **** controllers *** ***** * ******* ***** ** *** ****** ****** or ****-**** ******* *** ******** **** ****** ***** ** *******. For *******,****** ****** * ***.*** **** ******** ****** *.**/*** ** ******:

*** **** ** ***, **** ** * ******* ******** *** a ************ ********, *** ****** ***** *** ** ***** ************.

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

*** ******* ****** ************ ** *** *** ** ******** ***** the**** **********, **** *** ********** ******** ******** *** ******* ****** ******* devices **** ******* *** ** **** *****, *****. *** ********** consumes **** ** *** *** ***** ** ******** *** *** own *********, *** **** ****** ** ******** ** **** ** left ** ********* ******. ******* **** ***** ** ******* ** to *** ********* ***** ***** ** *** ****** **** ********* to **.

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

*********** **** **** ** **** ******** ***** *** *** ********, for *** ****** **** **** ***** *** ********** ****** ** powered, *** ********* ****** ********* '****** ****' ** ***** ******* divide ** **** ********** ** *** **** ** ***** *** locks *** *******.

****** ** *******, ***** * ****** ****** ***** ***** **** a *** ******, **** ****** *******, *********** ********** *** *** just *** ***** ****** ** * *****. **** *** ******* power ** ********* **** **** *** ********** *** ******* ********* one ** *** *****. ** * ******, *** ******* *** common *** ****** ** ****** **** ** ***** *********** **** Mercury **-****, *** **** ***, *** *** **** *****.

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

***** **** ***** ** ******* ******* ***** **** *** ********** - *******, ***** *** **** *******. *** **** ***** ***** devices **** ***** ** ******** ** *********** ******* *** **** be ********** *** **** *******.

  • *******: *** **** ****** ****** ********* ****** *****, **** ****** or **** ******* *** ********* ** ******* ** ****** ***** sourced **** **** *** **********.
  • *****: ********* ** **** *****, ***** ********** ****-******* ***** *** not ** ********. *** *******, ***** ******* *** ** **** to ******* *** ** *** ***** *******, ******** ********* ****** as **** **** ************* **** *******.
  • **** *******: ** **** *****, ***** ******* *** **** ***** **** a *** ******** ********** *** **** ******** ** **** ***, but **** ** *** ******** ****** ** ****.

** **** *****, *** ***** ***** ****** *** *** ***** devices **** ****** **** *** ** **** ** *******. ** a ******, ******** ** *** *** ********** ***** ************ *** reconciling ******* *** ******** ***** ** ******** *** ***** ********** opening.

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

*****, ***** **** **** ** *** *** **** ********** ******* (e.g., ***.*** ** ***.***). ****, ****** *** **** ****** ***** max *** ********** ********. **** ******* ** *** ***** ***** consumption ***** ** *** ******* ***** ***** **** *** *******.

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

** *** ***** ******* *****, **** **** ****** ***** ** available:

* **** ** ********** ** ******** ******** **************** ***.*** ***, *** ******* ******* * *** ** *** mA ** ***** *******. ** **** **********, **** **** **** *************** * *** ** ** ** ** *****, *** **** **** ************* *** ** ** * ********** **** ***** *** ********* and **** *****.

*** ***** ***** ******** ** *** ****** *** ****** ** 315 ** **** *** **********, ******** ** *** ** ********, which ** **** **** ******.

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

*******, ** **** ****** ******* *****, ****** *** ************ ***** is *********.

* **** ** ********** ** ******** ******** **************** ***.*** ***, *** ******* ******* * *** ** *** mA ** ***** *******, ** **** **********,*** ***** ***** *******(*** * **** **/**** *** ***********) ******* * *** *** mA ****, *** ******* **** ***-* ************* *** ** ** * ********** **** ***** *** ********* and **** *****.

*** ***** ***** ******** ** *** ******* *** ****** ** 970 ** **** *** **********, ********* *** ********* ***** ** over *** ** ******* ** ******* ** ********** ********* *********.

Available ***** *****

***** *** ************* ***** ** *** ********** ** ********* *** much ***** ** *********. *** *******, ******* ********** **** ********** *** ********* ***** ******:

********* ** **** *****, *** ******* ********* ***** ***** *** particular ******* **** ** ****. *** *******, *** '******' ********** offers ** ** *** ** *** * ****** ***** **.*****, or ***** *.**.

*** '*** *******', ** ******** **** ******* ****-**** ***** ** control * ****, ****** *** ****** ****** ******* ******* *** output ******** *** ******* ** * ******. ***** **** ********** controller ****** ****** ** ** ** *** ********** *******, *** all *********** **. ******* **** *** *********** ****** ** ** limit **** **** ***** ** * ********** ****. ** **** cases, *** ********** ******** *** ***** ******* ****** *** ****** ports, *** ***** *********** ****** ****** * ********** *** ***** power ****** *** *** *****.

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

******* *** ***** ** *** ***** ***** ****** ****** ***** on ***** ****** ****. ********* **** ***** *** *** *****, overall ********* ***** ** **** **** **** ** ******** **** separate *** ******* ***** ********:

**** **** *** ***** ***** ********* **** *** (*.**) ** 33% **** **** ***** (**.**) *** **% **** **** ***** (28.8W).

Code ******

**** ********* ***** ***** *** ** ***** ***** ********, **** if ******** ***** ****** ****** ** *********. ******** ***** *** complicate ***** *** *** *****. ******* *** **** ****** ***** is ***** *** "******* ** ****' *********** **** ******* **** locks **** *******. *** **** ********** ****, *** ****.*.*.*.*(****) *******:

"* ****** ********* ****** (**** ******)***** ****** ** ****** ************ ** ***** ** *** **** *********** ** *** ****** ******* ****** ***********. **** *** **** ****** ** ********, *** ***** **** remain ******** *** ** ******* *******. *** **** ****** **** include ******* ******* “**** ** ****” *** **** ** ******* 40” ** **” ********** ***** *** ***** *** ****** *’ of *** *****. ***** ****** **** ** ******** ** *** push ******."

**** **** ********* ********* *********** **** ***** ** *** ** contact ******* ** *** **********, *** ******** * ****** ***** in **** ***** ******* ************. ** *** **** *****, * push ****** **** ** ********* ** ****** ******* * *** source *** * **** ****, *** **** **** ****** **** to '**** ***** **** ** ******', **** ** *** ****** source ** ** ** ***** '*********** ** *** ****** ******* system ***********'.

*** ***** ******* *** ****** **** ********* ******, ******* ****** ****, ***, *** *** ***** *** ************ **** ******** ******** *** ****** **** ********.

Cost ******* ***********

***** *** ** ***** ***** ***** **** ~$*** - $*** per ****, ***** *** *********** ** ***** *****, ***** ********, and *****. *** *******, *** ***** *********:

  • ***' ** **/* ***** *****: $**
  • ** **/***** ***** ******: $**
  • ************ ***** *** *****: $** - $***

******** ** ** ******* **** **** ** ~$*,***, **** ******* can ** ***** ***********.

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

**** **** ******** *******, *** *** ******* *********** ****** **** separate ***** ******** ** ***. *** *******:

  • ***-**** ****** ****: **** *** ***** *******, ********** ***** ******** *** *** use, *** ********** ** ************ ******* *** ******* **** **** power, **** **** ****** *** ****** ***** *******. ***** *** is *** *** **** ***** ** ***** ******, ******* ***** PoE ***** ***** ******* **** ******** ********** *** *** **** sensitive ** ******* ****.
  • ********: ******* ******** ******* *********** **** ***** *** *** ********** high-power *****, **** *** *********** *** *** ***** **** ******** rated *** ********** ***. ************** ******** ******* ** ********* *** within ****** ******, *** *********** ******* ******** ** ****** ****** are ***. ******** ******* ******** ******** ******** **** *** **********, by *** ** ***, *** ******** ******.
  • ****** ***** *****: ** ********, ** *** ** ****, *** ****** *** subsequent ***** ** ******* ******* *** ** ***********. ** *** doors **** ******** **** ***** **** ***, **** ******** ****-************ backup ***** *** ** **** ******* **** * ******* ******** used ******* ****. ** **** *****, ******** *** ****** ******* PoE ******* **** ***** ******* ********* ******* ** *** ******* for ****** ***** **********, *** ********** ******** ***** ******** *** simpler *** **** ****** ** ******.
  • ******/******** *** ****** ***** ***** ******: * ****** ******** "**** ***** * ****** ******** ******, PoE ***** ** ****. **** ** ** * ****** ******, the ************* ** ****** **** ***** ****** *** *******. **** it ** ****** ******* ******, *** ******* *** ** *************** unlocking ** ******* *****." *** ******* ** ****** ** *** ****** ******* **** during ******** *******, *** **** **** *** *********** *** again **** *** ****** ****** *** ****** **** **. ** mitigate *** ****,*** *** ********** ** *******, ***** *** ~$*** *** ******* ** ****** the '***** ***' ***** * ****** ** *********** *******.

Quiz ********

**** ****** ******* ****** ******* ****.

[******: **** ******** *** ********** ********* ** **** *** ************* revised ** ****]

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.

Login to read this IPVM report.
Why do I need to log in?
IPVM conducts unique testing and research funded by member's payments enabling us to offer the most independent, accurate and in-depth information.

Related Reports

Genetec Security Center 5.8 Tested on Mar 19, 2019
Genetec has released Version 5.8. This comes after a wait of more than a year that caused frustrations for many Genetec partners. Our previous...
Retired Mercury President Returns As Open Options President on Mar 18, 2019
Open Options experienced major changes in 2018, including being acquired by ACRE and losing its President and General Manager, John Berman who...
Large US University End-User Video Surveillance Interview on Mar 18, 2019
Schools have become targets in modern days of active shooters and terrorist fears. The need for video and access security is high. Universities...
Installation Course - Last Chance on Mar 14, 2019
This is the last chance to register for the March Installation course. This is a unique installation course in a market where little practical...
Camera Pendant Mounting Guide on Mar 07, 2019
It is often necessary to suspend a camera from a high open ceiling. This is commonplace in retail, warehouse, industrial sites, hangars, and other...
Start Up Safe Zone $150 Gunfire Detector Profile on Mar 06, 2019
While gunfire detectors have been around for years, typically they are limited to enterprise level or municipal deployments. Startup AVidea, makers...
Cable Firestopping Installation Guide on Mar 06, 2019
Installing cables through firewalls is a critical installation issue. Failing to properly seal a penetration can cause smoke and fire to spread,...
Top ISC West 2019 Booth Moves on Mar 05, 2019
With ISC West just a month away, we examine the most notable exhibitor moves including big exhibitors who dropped out and a number of significant...
Prysm PSIM Profile on Mar 05, 2019
A decade ago, PSIM promised significant potential but has always suffered from significant problems. Now, a number of PSIMs have either gone out of...
Genetec Declares "Lead With Synergis" Access Control on Mar 04, 2019
Genetec started with and is best known for its video management software. However, the company is now imploring its partners to lead with Synergis,...

Most Recent Industry Reports

Avigilon Launches 'Renewed Products Program' on Mar 19, 2019
There are lots of 'pre-owned' cars but pre-owned IP cameras? While such programs are common in other industries, in video surveillance, they are...
Hanwha Tax Evasion Probe, Camera Division Implicated on Mar 19, 2019
A Hanwha group subsidiary was raided as part of a tax evasion probe. While a Korean news media report listed the raided entity as 'Hanwha...
Genetec Security Center 5.8 Tested on Mar 19, 2019
Genetec has released Version 5.8. This comes after a wait of more than a year that caused frustrations for many Genetec partners. Our previous...
Retired Mercury President Returns As Open Options President on Mar 18, 2019
Open Options experienced major changes in 2018, including being acquired by ACRE and losing its President and General Manager, John Berman who...
Large US University End-User Video Surveillance Interview on Mar 18, 2019
Schools have become targets in modern days of active shooters and terrorist fears. The need for video and access security is high. Universities...
Hikvision Favorability Results 2019 on Mar 18, 2019
Hikvision favorability results declined significantly in IPVM's 2019 study of 200+ integrators. While in 2017 Hikvision's favorability was...
ONVIF Favorability Results 2019 on Mar 15, 2019
In the past decade, ONVIF has grown from a reaction to the outside Cisco-lead PSIA challenge, to being the de facto video surveillance standard...
Installation Course - Last Chance on Mar 14, 2019
This is the last chance to register for the March Installation course. This is a unique installation course in a market where little practical...
City Physical Security Manager Interview on Mar 14, 2019
This physical security pro is the Physical Security Manager for the City of Calgary. He is a criminologist by training with an ASIS CPP credential....
US Drafting Separate Rule for NDAA Dahua/Hikvision 'Blacklist' on Mar 14, 2019
The most debated provision of the NDAA ban of Dahua, Hikvision, Huawei, et al. is the so-called 'blacklist' provision which would ban any company...

The world's leading video surveillance information source, IPVM provides the best reporting, testing and training for 10,000+ members globally. Dedicated to independent and objective information, we uniquely refuse any and all advertisements, sponsorship and consulting from manufacturers.

About | FAQ | Contact