Securitron DKC Bedienungsanleitung PDF herunterladen (Seite 8)

PN# 500-33510

Page 8 Rev. A, 06/13

When using exit switches, the possibility must be considered that an electronic failure may occur

to the DKC and a person will not be able to exit. If the DKC controls the only door exiting the

area, additional steps should be taken to improve the reliability of exiting so as to avoid trapping

someone. This can most easily be done by implementing a secondary means of releasing the

lock not dependent on the DKC's REX input. Additional switch contacts should be used that

directly control the electric lock. In the case of a fail safe lock, which should always be employed

when there is only one exit path, this can be easily accomplished with "double break" wiring

between the exit button, electric lock, and DKC. If the exit button has a set of normally open

and normally closed contacts, it should then be wired according to Figure 8 or Figure 9 below.

When the exit button is depressed, its normally closed contacts directly break power to the lock

while its normally open contacts activate the DKC. If for any reason a failure occurs with the

DKC, a person can still exit by holding the exit button down while pushing the door open.

Always consult local building or fire department when securing doors that are part of

an emergency exit path to ensure compliance with local codes.

DKC

COM

DOUBLEBREA KWIRINGFORFREEEGRESS(SPDTSWITCH)

Figure8

FAILSAFELOCK

WHENTHEEXITSWITC HISAC TIVATED,THENCCONTACTSOPE NWH ICH

RELEASETHEFAILSAFELOCK.ATTHESAMETIME,THENOCONTACTDI RECTLY

ACTI VATE STHEREXINPUT.THISDEENERGIZESTHELOCKCONTROLRELAY

WHI CHRELEASESTHELOCK“ASECONDTIME”FORTHEAMOUNTOFTIMETHAT

HASBEENPROGRAMMED.IF

THEDKCSU FFERSAFAILURE,THEEXITSWITCH

CANSTILLRELEASETH ELOCKFORSAFETY.

REX

DC

‐

SPD T

SWITCH

‐

NCCOM

DKC

COM

DOUBLEBREAKWIRINGFORFREEEGRESS (TWOPOLESWITCH)

Figure9

FAILSAFELOCK

WHE NTHE EXITSWIT CHISACTIVA TE D,TH ENCCONTACTSOPE NWH ICH

RELEASETHEFAILSAFELOCK.ATTHESAMETIM E,THENOCONTACTSCLOSE

WHI CHACTI VATETH EREXINPUT.TH ISD EENERGIZES THELOCKCONTR OL

RELAYWH ICH RELEASESTH ELOCK“ASECONDTIME”FORTH EAMOUNTOF

TIME THATHASBEENPROGRAMMED.

IFTHE DKCSUFFERSAFAILURE,THEEXIT

SWIT CHCANSTILLREL EASETHELOCKFORSA FETY.

REX SRC

DC

‐

2POLE

SWITCH

‐

NONO

NCNC

Man trap Function

The DKC can be set up to operate two doors to work together as a man trap function. In order to

use the man trap function, the DKC must be programmed with a user code on each door. The

door position switches must be connected to each door as in Figure 10. The DIP switch 1 labeled

“Man Trap” must be switched to the ON position. Always consult local building or fire

department when securing doors that are part of an emergency exit path to ensure

compliance with local codes.

Anti-Tailgating

Particularly when using the longer time ranges, the user

may be concerned that after an authorized person has

used the door, a second unauthorized person can also

use it before the lock has reset. By the addition of a

door switch which opens when the door opens, the DKC

can be made to re-engage the lock as soon as the door

has re-closed regardless of the status of the timer. This

feature can be implemented either using the DKC

Programming Tool or using a system keypad.

ANTI‐TAILGATING

Figure10

CONN ECTADOOR

SWIT CHWHICHOPENS

WHENTHEDOOROPENS

DOOR 

SWITCH

+12V

DOOR

POS

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 19 20

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