Backup Power For Maglocks Guide

By Brian Rhodes, Published Nov 17, 2020, 10:59am EST

When the main power fails, many believe maglocks must leave doors unlocked.

IPVM Image

However, battery backed up maglocks are allowed according to IBC / NFPA code. It just needs to be done properly. We examine the five critical steps for using backing up maglock power correctly:

  • Understanding Codes
  • Calculating Power Budgets
  • Factoring In Power Source
  • Connecting Power Supply Fire Alarm Loops
  • Including The AHJ

In this note, we look at what the code actually says about power backups for maglocks, where they might be illegal, and how to do it right when allowed.

Multiple *******

** ******* **** ******* doors **** ***** ********* when ***** *****, ***** are ***** ***** **************:

  • *****:************* *** ********** ***** and *** **** ***** to * ********'* *** of******** ** *** *********** start.
  • ***********: *********** ***** **** requirements **** * ********* design.
  • *** ***: ******* ******** **** the ******** ********* ** the ****, *** ***** most ******** ****** ** the *******.

*****

********** ** ****, ******** codes ** *** ****** the *** ** ******* backed ** ********, ******* the ******** '**** ****** must ****** ** ********' theme. ** ***** ****** forbid ******* *******, ***** exceptions *** **** ** the ***** *****. *******, their *** ** ******* if **** *********. **** a **** ** ***** passages, ******** *** **** scope ** ********** ******** regardless ** ********* ****:

  • **** *** (****) *.*.*.*.* (Electrically ********** ****** **** Assemblies)
  • **** *** (****) *.*.*.*.* (Access-Controlled ****** **** **********)
  • **** ** (****) **.*.* Electrically ****** *****
  • *** ****.*.*.* (****)

(*** **** ****** ** these *********, ***:**** ****** ****, ***, and *** ***** *** Standards)

*** *********** ******** ****** cited **:

**** ** ***** ** the ****** ******** **** automatically ****** *** ****.

*******, *** ****** **** not ******** *** *** of ****** *****.*** ******** **** ** the ********* ** ****** shall ** ********* ** the **** ***** ****** and ****** **** *** system ** ********* ** when ***** ** ****.

*** ***** ************ *** have * ********* ** these '***** *****' **** take ********* ** *** rules, ** *********** ***** awareness ** ***** ******** or ****** ***** ** them ** * ******* step, ***** ********** **** meeting *** ***. (*** the **** ******* ** this ******.)

Calculating ***** *******

******* *** **** * battery **** **** * maglock ****** ** *******. Maglocks*** ********* **** ****** devices **** *** ***** batteries ******* ** *** current **** ** ********* **********, ****** ***** lock ***** **** **** use ***** **** *********.

******** ******* *** ***** maglock**** ******** ***** ** 12 *** ** ***** at *****:

IPVM Image

****** * ***** ****** system ********* **** *** 5 *** **** ************* **** **** **** maglock ***** (*** **** of ****** *****) *********. The ***** ***** ******* over *.** **** *** hour, ** **** * 10 *** ******, ***** will **** ********** **** **** ***** hours. ** ****, ********* outages *** ***** ******* manual ******** ********, **** as ****** ************ ******* normally******* *****.

*********** **** ****** ** complicated ** ***** ******* that **** **** ** powered ** *** ****** system, ********* *** ***********, readers, *** **** **** RTE ******* **** *** motion *********. *** ***** demand ********** **** *** backup ****** *** ******* shave *** ****** ***** duration ** **** ******* in * ***** ******, and ***** ******** ** a ****** ** ******* design.

Designing ******* ****** - ****** / **** ********

**** ** ********* * battery ****** ****** *** be ************ ******** (*********) doors ** **** ******, but ******* ****** (******) unlocked **** ***** *****. Of ******, *** ******** must ******* **** ******** security ********** *****, *** in *** ******** ** maximizing ****** *** ******** doors, ****** *** **** to ** ********.

Factoring ** ********** ***** *******

*******, **** ** *** specifies ********** *********, * door ********** *** *** support ******* ********** ***** for *** ****** ******* for ******* **** ** power.

********, *** ******* **** be ******* ** *** main ***** *** ***** will ** ******** **/*** by ********** ********. *******, in ***** **** **** power ***** ** *** access ******** ******** ******** as *****-******* *******, ***** may **** ******** *** routed ******* *** ********** itself. **** ***, **** controller ******** *** *** designed ** ***** ** deliver *********** **** *** long *******.

*** *******, **** **** access ****** ***** **** shows ** ******* ******* connection:

IPVM Image

***** **** ******* *** draw ****** ******* ** power (**: **** - 100mA), *** **********'* ****** relay ******** *** *** be ***** ** **** through ********** ******** ** power ******** (**: ***** - *****+)

IPVM Image

(****: ***** ******** ** eIDC32 ** *** ******* this ****** ***** **********.)

** ** ******* ** this **********, *** *** way **** ***** ******* 'direct ************' ** ***** to ********, **** **** ******** are **** ********* ***** a ******** ****** ***** supply, *** ******* ** pass-thru ******** ** *** controller. ** ***** *** limitations ** *** ****-**** power ******, ********** ***** with ***, ***** ******* ****** ******* Tutorial.

Batteries ** *** ** **********

** ** ***** ****** that ********* *** *** always *** ****, ** even ********* ******, ** backup *****. *** ******* or *********, ** ***** in*** ****** ***** *** Security *****, *** *** **** unitized *** ***** ********* to ******, *** *** duration ** ****** * concern. ** * ******, especially ** ******** ************** or ******* **********, *** entire ******** *** ** backed ** ** * generator. ** **** ****, the ****** ** ********* much **** *********** *** runs **** ******** ** amps *** ****. ** these **********, *** *** length ** *** ****** system *** ****** *** be * **** *******.

Power ****** **** ***** *****

*** ***** *** ***** on *** *********** *****: when *** **** ***** activates, *** ***** ** maglock **** ****. **** typically ** *********** ** tying *** ****** ***** supply **** *** **** alarm *** ** ***** loop. **** *** ***** is ******, ** ***** a ****** ** *** supply **** ** **** cut ***** ** ******** device ** ***** ** it.

**** ****** ***** *** maglock ************* ******* ***** instructions, ******** **** *** typically ***** ** ******* in *** ** ******* their ********** ** **** it *******. ** **** cases, *** ******* ************ state '********* **** **** ********** and/or ***** ****** ** stop ******* ***** **** local **** ***** ** activated', ** *******.*******, ********** ***** *** doing **** *** *** hard ** ********** ** understood ***********.

***** ** *** ******* is ******** ****** ** a ****** ***** ******, which ** **** ** triggered ** **** ***** when * **** ***** is ******** ** *** controller. *************, *** ***** supply ****** *** ******* fire ***** ***** ******** instead ** ********** ** a **** **********. ************ *****, *******, **** power **** *** ***** to ***** ****** ********* to *** ******: *******, controllers, *** *** ****.

**** *** ***** *** door *********, *** *** main ********** ** '******** safety' ***** ***** ********** over '******** ********'.*********, ************* planning *** ***** **** device ** *******, *** under **** ********** ****** power ** ********, ****** not ** **************.

Including *** ***

**** ***** *** **** is ****, *** ****** might ***** ** "**". If *** ************** ****** ************, ** ***, **** not *******, *** **** is ****. ***** *** two ***** ******* *** local **** *** *** accept *** ****:

  • ***** ********* ******:**** ****** ** *** want *** *********** **** firefighters ****** ***** * building ******* *** **** is ******.
  • ****** ***********:*************, **** ********** ****** ** ******** because ** ******* ************** ************, *** ********* could *********** **** *** door ****** *** **** panicked ********* ****** * dangerous ********.

** * ******, **** areas ******** ****** ***** backup ***** ** ***** types ** **** ***** as * ****** ** local ********* *** **** any ******** *** ** the ***** ** ***** inspectors.

Proceed **********

***** ****** ******** *** maglocks *** ***** ** deemed *** ********* ** work **** ** ****. While ***** ******** *** be **** ********* ** easier ** ******* **** other ***** ** ******** locks, **** *** *** always *** **** ******. If *** ******* ****** is *** *********** ** costly ** ****** ***** lock *****, **** ****** power **** ** ******** to **** ***** ******.

******* ******* * ****-********* design *** ******* ******** of *** *** ** become * ******** *** the *** ****** ******.

[****: **** ***** *** initially ********* ** ****, and ************* ******* *** updated ** **** *** 2020.]

Comments (5)

**** ******* ******* ********* connected ** **** ***** is ***** *** ** hooked ** **** *** would ****** ** ***** in ***** *****. *** input ********** ** *** board ***** ** *** a *** ******* ******* only, ***** *** *********** of ***** *** ********** directly **** * *** power ******* ****** **** as * *******.

****'* * **** *****. Sticking ***** ** * non-rated *** ******* ** not ***** ** ***, and ***** ** ******'* fail ***** **** ** isn't * **** *******. I'll *** *** ***** switched.

*** ***** *** **** updated ***** * ******* example. ****** *** ******** this ***.

**** ******* ********* ****** time *** ****** ** allow *** ******* ********* CURVE & *** **** that * ********* ******** decays, ********* ***** *******, based ** ******* ****, temperature & ****** ** prior **** *********.

*** **** ****** ******** that ******* ******** ** calculated ** **** **** scenario, *** ***** ****, eg ***********.

**** **** ***** ********** it ** **** ** downgrade **** ********** ****** time ** **% ** allow *** ***** *********.

***** **** ******* ******* the * *** ***** will **** * ******** 1280mA. **** * * 5AHr ********* **** *********** capacity ** ***** ** a *********** ****** **** of *.* *****. ** real ***** ************ **** off / ********* ******* capacity ** **% ***** gives ** ******** **** world ****** **** ** 5.45 ***.

*** ********** ** ******* a ****-******, ***** ****- and ****-****, ******* ******** sorted *** ******* ** one ** *** **** reasons * ****** ** work **** ******** ** strikes ******** ********.

*****'* **** ** **** places ***** * ******* to **** ******, ********* break-glass, **** **********, ********* override, ***** ** ****** control ****** ***** ***** have ** ***** *** leave * **** ***** closed **** ** *******'* be.

******* *'* *** ******** but * ******** ****** a ******** **** ***** gracefully ** * *** override.

Read this IPVM report for free.

This article is part of IPVM's 6,653 reports, 896 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
Loading Related Reports