Assa Abloy DK-26 Instructions d'exploitation télécharger pdf (Page 5)

PN# 500-16900

Page 4 Rev. D, 12/11

FIG. 3: OVERVIEW OF CPU BOARD

SRC

REX

UCD HCD NCX CX

NOX

NC2 C2

NO2

NC1 C1

NO1

GRN YEL RED BLU

WHT

BLK GRY BRN BGE ORG PNK

VIO

AC IN F DC IN/OUT

PRGM

HARD

CODE

MICROPROCESSOR

AUX.

SOCKET

DPDT RELAY

SPDT

RELAY

12/24 AC POWER

FREE TERMINAL

12/24 DC POWER +

12/24 DC NEGATIVE

DC TERMINALS MAY

ALSO BE USED AS

OUTPUT TO POWER

DC LOCK, IF AC

POWER IS SUPPLIED

BEEPER

COMMON

RED LED

GRN LED

YEL LED

KEYS

VIOLET

PINK

ORANGE

BEIGE

BROWN

GRAY

BLACK

WHITE

BLUE

RED

YELLOW

GREEN

PUSH TO SET PROGRAM MODE

PUSH TO PROGRAM HARD CODE

COM. FOR REX, UCD, HCD TERMS

REX INPUT (REMOTE RELEASE)

DISABLE ALL USER CODES

DISABLE HARD CODE

LOCK CONTROL

RELAY CONTACTS

PROGRAM

RELAY

CONTACTS

KEYPAD CABLE

PS1

PS2

PS3

3.3.2 DC LOCK WITH AC POWER

For convenience and economy, most DC electric locks can be operated from an AC transformer

when the DK-26 is used. Select a transformer of the same voltage as the lock (12 or 24). The

CPU board converts the input AC to DC to operate the lock. Make sure the capacity of the

transformer is large enough to operate both the DK-26 and the lock and that the transformer

is UL listed under the UL 294 standard. The lock must accept full wave rectified DC

power. This is true of most DC locks (including Securitron’s Magnalocks) but some specialty

units require regulated DC power. You must operate those as described in the next Section.

Note finally that many DC lock installations call for battery backup. To achieve this, you must

employ a DC battery backup power supply and also follow the wiring description in Section

3.3.3.

DC locks come in “fail secure” and “fail safe” versions. A fail secure lock is secure when not

powered and a fail safe lock is secure when powered. All magnetic locks are fail safe. Figure

4 shows AC power being input to the AC terminals. The DC terminals furnish output power for

RELAY CONTACTS

RATED AT 5 AMPS

1 2 3 4 5 6 7 8 9 10 ... 22 23

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Assa Abloy DK-26 Instructions d'exploitation Page 5

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