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PN# 500-16900

 

 

Page 2 

Rev. D, 12/11 

SECURITRON MODEL DK-26 DIGITAL KEYPAD 

INSTALLATION & OPERATING INSTRUCTIONS 

 

1.  DESCRIPTION 
Securitron's DK-26 is a digital keypad system designed for medium/high security control of 
electric locks.  It consists of two components: the keypad and the CPU board connected by a 16 
ft. cable.  This allows the CPU board to be mounted within the protected area for higher 
security
.  Tampering with or even destroying the keypad will not release the door.  The rugged 
stainless steel keypad may be mounted outdoors in any environment as it is fully weatherproof.  

The keypad features true 10 digit operation (keys are not paired), three LED’s and a beeper. 
 
2.  PHYSICAL INSTALLATION 
The keypad is normally surface mounted on the outside of the door to be controlled, and the 
CPU Board is mounted inside the protected area safe from tampering. 

 
To install the keypad, holes must be drilled for the 2 mounting screws and the cable.  A template 
is not provided due to unavoidable variations on the cable exit of each keypad.  Referring to 
Figure 1, note that the top screw engages the slot at the top of the keypad.  Once the top screw 
has been installed, the location of the cable hole should be set roughly by positioning the keypad 

and marking the cable hole point.  Make sure the keypad is pulled down firmly on to the screw.  
A 3/8" (10MM) hole is then drilled for the cable.  After the cable has been pulled through, the 
final screw secures the keypad to the wall.  Note finally that a blank rectangular label has also 
been furnished.  This can be used to cover up the “BELL” legend if you don’t intend to utilize the 
doorbell function. 

 

FIG. 1:  PHYSICAL INSTALLATION OF KEYPAD 

M

O

UN

T

ING

SU

R

F

A

C

E

(1) MOUNT SCREW TO ENGAGE SLOT AT
TOP OF KEYPAD
DRILL 1/8" (3MM) HOLE

(2) DRILL 3/8" (10MM) HOLE FOR CABLE

(3) SECURE BOTTOM WITH SECOND
SCREW.  COVER SCREW HEAD WITH
"DK-26" LABEL.
DRILL 1/8" (3MM) HOLE
NOTE: CHOOSE PHILIPS OR SPANNER
(TAMPER) HEAD SCREW

CABLE

 

The CPU Board must be installed in a dry location free of extremes of temperature and humidity.  
If the 16 ft., twelve conductor cable that is included is not of sufficient length, additional cabling 
can be spliced by the installer.  However, a long cable run can give rise to electronic noise 
problems in certain environments.  It should therefore be avoided where possible and in no case 

should cable length exceed 100 ft. (30 meters). 
 
3.  WIRING 
3.1  POWER SELECTION 
The DK-26 operates on 12 to 24 volts AC or DC.  Nearly all electric locks operate on voltage 

within this range, so the power supply you would normally utilize to operate the electric lock will 
also operate the DK-26.  Power consumption of the DK-26 depends on voltage and is shown on 
the following chart: 
 

DK-26 POWER CONSUMPTION: 

12 VOLTS 

24 VOLTS 

RELAYS, LED’S, + BEEPER ON (MAX) 

160 mA  

190 mA 

Summary of Contents for Securitron DK-26

Page 1: ...500 16900 Rev D 12 11 ASSA ABLOY the global leader in door opening solutions MODEL DK 26 DIGITAL KEYPAD SYSTEM INSTALLATION AND OPERATING INSTRUCTIONS Securitron Magnalock Corp www securitron com Tel...

Page 2: ...PROGRAMMING Page 8 SECTION 4 2 KEYPAD CHANGEABLE PROGRAMMING Page 9 SECTION 4 2 1 CHANGING THE USER AND PROG CODE FROM KEYPAD Page 10 SECTION 4 2 2 ADDING MULTIPLE USER CODES Page 10 SECTION 4 3 MAST...

Page 3: ...eypad is pulled down firmly on to the screw A 3 8 10MM hole is then drilled for the cable After the cable has been pulled through the final screw secures the keypad to the wall Note finally that a bla...

Page 4: ...which could cause the microprocessor to malfunction The MOV should be spliced into the lock power wires as close to the lock as possible Some DC electric locks have internal kickback protection includ...

Page 5: ...om 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 tr...

Page 6: ...DK 26 and the lock The DK 26 does not require regulated power but certain specialized electric locks do so follow the rule of matching the power supply to the requirements of the lock DC locks come i...

Page 7: ...to send power to the lock Figure 6 shows how to add external contacts for non timed remote release of the lock for both lock types FIG 6 ADDING EXTERNAL CONTACTS FOR FAIL SAFE AND FAIL SECURE LOCKS NC...

Page 8: ...while its normally open contacts activate the DK 26 In effect the lock is released twice Note that the NC contacts are placed in the circuit before the DK 26 s lock control relay This is to aid possi...

Page 9: ...programming in a situation where the end user is not likely to ever change the code or at least that changes would be rare Fixed programming can be used in lower security traffic control applications...

Page 10: ...ixed code programming 4 2 KEYPAD CHANGEABLE PROGRAMMING In this application two codes are programmed into the DK 26 The first called the Program code acts as a password which allows changing the User...

Page 11: ...ately by a new 2 7 digit User code Wait 5 seconds Note two red LED flashes for confirmation note rapid yellow flashing LED returns Press Bell key to terminate program mode or wait 30 seconds Re enter...

Page 12: ...code The unit could not be put into program mode from the keypad The DK 26 however avoids this problem by rejecting any code that is a subset of another code in memory It signals this rejection by sh...

Page 13: ...y by entering a User code and then secured all night by entering a User code again When you have enabled toggle mode activation of the REX input will successively energize and deenergize the lock cont...

Page 14: ...inary operation must be via one or more User codes see Section 4 2 for programming Program the Hard code as your duress code see Section 4 1 Put the unit in program mode and enter 7 5 You will see the...

Page 15: ...e simply by using the second pole of the lock control relay to shunt the door switch see Section 7 3 Generally you mount a Sonalert on the CPU board enclosure It will sound if the door is left open to...

Page 16: ...e terminals 7 3 ALARM SYSTEM SHUNTING The DK 26 s lock control relay is of the double pole double throw type Note that in all the other drawings in this manual we show only one of the poles being used...

Page 17: ...K 26 is often used with Securitron s Touch Sense Bar and magnetic lock The following drawing shows wiring for this particular configuration Note that the REX input is not used Since touching the bar o...

Page 18: ...timer Two digit codes must be entered from 01 to 99 seconds Default is 5 seconds Entering 00 sets toggle mode APPENDIX B TROUBLESHOOTING Note first that the DK 26 replaces older Securitron keypads the...

Page 19: ...nt through the PolySwitch trips it so that it clamps the current down to roughly 100 mA The PolySwitch will continue to clamp until all power is removed for about 5 seconds It is not enough to correct...

Page 20: ...ace the keypad for full operation PROBLEM Unit beeps when keys are pressed but does not accept programming If the problem occurs on initial installation usually it s caused by misunderstanding the pro...

Page 21: ...ry slot 45 You test the code by re entering 4 5 1 2 and the door opens because the sequence includes the real code 1 2 Later it will be noticed that the door is opening on 1 2 as this is such a simple...

Page 22: ...a fail secure lock is operated from the same supply as the DK 26 When the lock is energized it may draw too much power for the power source This reduces the voltage and these voltage swings can crash...

Page 23: ......

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