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Assa DK-26 User's Manual

1. nny POWER SUPPLY J H E NOTE MOV NOT REQUIRED IF 5 i SECURITRON MAGNALOCK IS USED Eam 58 9 12 OR 24 VDC IF FAIL SECURE z S DC FAIL SECURE OR FAIL SAFE LOCK DC POWER NEED NOT BE REGULATED LL L b 4 i 3 4 USE OF THE F TERMINAL The F terminal on the power strip is not connected to FIRE ALARM anything It is a free terminal with either of two CONTACTS intended uses First on some complicated A E i installations a large number of wires generally DC negative may require termination It can be convenient to run a jumper from the DC terminal to the F terminal so that the large number of negative returns can be spread on to the two terminals This avoids putting two many wires on one terminal or splicing into wires Second some magnetic lock installations require interface with NC contacts controlled by the fire alarm system which will cut low voltage power immediately releasing the magnetic lock for safety The connection to the fire alarm contacts is normally made in the power supply but if you are using a plug in power supply you ll want to make the connection on the DK 26 CPU board where you have terminals The presence of the F terminal makes the connection more con
2. Page 3 SECTION 3 3 2 DC LOCK WITH AC POWER Page 5 SECTION 3 3 3 DC LOCK WITH DC POWER Page 6 SECTION 3 4 USE OF THE F TERMINAL Page 7 The F terminal is mainly used for convenient connection of fire alarm contacts which will release a fail safe lock in the event of activation of the fire alarm SECTION 3 5 ADDING OTHER LOCK CONTROL SWITCHES Page 7 This section and drawing show proper connection for an external switch such as from Securitron s Lock Control Panel SEGTION Gc THE REXFUNCTION eicere iiec onec ceca Page 8 When you are using a magnetic lock or solenoid bolt you often require a separate switch to allow egress This switch can be connected to the CPU board to provide timed egress in different ways This section fully covers this requirement SECTION 4 PROGRAMMING Page 10 SECTION 4 1 FIXED PROGRAMMING Page 10 Fixed programming is for lower security applications when the code is not expected to need regular changing by the user The Hard code is used for this requirement Copyright 2003 all rights reserved e Securitron Magnalock Corp 550 Vista Blvd Sparks NV 89434 USA Tel 775 355 56
3. assure that only a single Hard code is in memory but to be extra sure install a wire jumper between terminal SRC and terminal UCD see Figure 2 This will disable any of the possible User codes so if somehow one was programmed in it would not open the door Below we show a step by step summary Power up unit confirm steady yellow LED Press the Hard Code button on the CPU board for one second Confirm slow flashing yellow LED Within 30 seconds of pressing Hard Code button enter a 2 7 digit code End your entry with Bell key or wait 5 seconds Note two red LED flashes for confirmation Re enter code door should open Finally as mentioned at the beginning of this section here is the procedure to follow if you don t get a steady yellow light on power up The absence of the yellow light means that for any reason the unit already has one or more codes in memory You must erase these other Rev A 2 10 03 Page 12 codes to be certain that the unit will operate only on the single code you plan to enter Follow the steps shown below Press the Prgm Code button on the CPU board for one second Confirm fast flashing yellow LED Enter 0 0 followed by the Bell key or wait 5 seconds Confirm two red flashes Enter 8 8 followed by the Bell key or wait 5 seconds Confirm two red flashes Extinguish the fast yellow flashing LED by pressing the Bell Key or waiting 30 seconds This procedure has erased any program code that was present and all
4. the problem is either a wiring mistake a defective beeper or a fault on the CPU board with the output that drives the beeper Check that the keypad blue wire this controls the beeper is connected into terminal BLU If it is next remove it from the BLU terminal and briefly touch it to terminal DC If the beeper sounds the problem is with the beeper driver on the CPU board and the CPU board will have to be replaced If the beeper does not sound the problem is with the beeper itself in the keypad or with the internal beeper wiring within the keypad The beeper is the only part of the keypad which is repairable This is because the beeper is physically located in a chamber at the bottom of the keypad If it was sealed in the keypad the sound level would not be adequate Look at the beeper in its chamber to confirm that the wires look OK You can then return the keypad to the factory for beeper replacement or you can replace the beeper in the field this requires soldering The part number for a replacement beeper from Securitron is 050 10600 PROBLEM One or more of the LED s do not work while the unit otherwise functions This is either a wiring mistake a failed LED in the keypad or a fault on the CPU board with the output that drives the LED Each LED is operated by the wire that bears the LED s color So for example if the green LED is the one that is not working first check to see that the green keypad wire is correctly connected to terminal GR
5. Program code It is more difficult to put the unit into program mode it can only be done from the Prgm Code button in the CPU board but User codes can still be changed and some users may feel that this is a more secure code changing procedure To delete any individual User code put the unit into program mode fast yellow flash from the Prgm Code button or from the existing Program code Enter the prefix for the code you wish to delete 01 59 and press the Bell key or wait five seconds You ll see the two red flashes You ll then need to press the Bell key again to exit program mode or wait 30 seconds An alternate method to delete any individual User code when you know the actual code but not the two digit prefix is as follows Put the unit into program mode fast yellow flash from the Prgm Code button or from the existing Program code Enter 7 9 followed immediately by the complete code you wish to delete If it s a seven digit code you ll immediately see the two red confirmation flashes Otherwise press the Bell key or wait five seconds If you get the single red error flash it is probably because the code you thought was in memory was not You ll then need to press the Bell key again to exit program mode or wait 30 seconds Rev A 2 10 03 Page 16 To delete all User codes there is a special prefix Put the unit into program mode fast yellow flash from the Prgm Code button or from the existing Program code and enter 8 8 This
6. assigns the UCD terminal to anti tailgating 82 re assigns the HCD terminal to door prop alarm 83 re assigns the UCD terminal to door prop alarm Note the door prop alarm function automatically includes anti tailgating 84 returns either input to original code disable meaning 88 will erase all user codes not Program or Hard code 89 will return all functions including timer to factory set Codes are unchanged Pressing 9 when in program mode sets the timer Two digit codes must be entered from 01 to 99 seconds Default is 5 seconds Entering 00 sets toggle mode Rev A 2 10 03 Page ii APPENDIX B TROUBLESHOOTING Note first that the DK 26 replaces older Securitron keypads the DK 20 DK 20 and DK 25 The DK 26 keypad and CPU board are not compatible with any of the older units so make sure you have both a DK 26 keypad and DK 26 CPU board If the keypad label is missing you can identity a DK 26 keypad by the fact that it has three LED s The DK 26 circuit board is marked with its name Also as you are going through these troubleshooting points note that the goal is to get the unit working but if this is not possible to identify whether the failure is in the keypad or in the CPU board PROBLEM Unit appears dead First check that power has been correctly connected and use a voltmeter on the CPU board to make sure that the correct voltage level is present If the voltage reads very low the problem may be that a fail safe lock be
7. at a receptionist s desk for example Either could open the door for the programmed time There are some special characteristics as to how the REX input works First it does not start the timer when the input is closed but rather when it reopens This means that you can use the REX input to release the door for an extended period of time As long as terminals REX and SRC remain connected the lock will be released When they disconnect the lock will remain released for the amount of time programmed This extended release capability is useful in certain applications The REX input is also retriggerable This means that if the lock has been released and the REX input is triggered the release time will be extended to the full value that has been programmed Rev A 2 10 03 Page 9 When using exit switches the possibility must be considered that an electronic failure may occur to the DK 26 and a person will not be able to exit If the DK 26 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 DK 26 s REX input Additional switch contacts should be used which 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 t
8. bell key but repeating digits is OK If you wait longer than 30 seconds to start your code entry the programming window will automatically terminate so press the Prgm Code button again Do not pause while you re entering all these digits as any time there is more than a five second gap between keys being pressed the unit will stop reading the sequence Note that a successful button press is echoed by a beep and a flash of the green LED When you have completed entering your Program code hit the Bell key and you should see the red LED display two pulses within a second If you don t hit the Bell key your code will be accepted anyway but it will take five seconds for the two red flashes to come If you have selected a seven digit code the two red flashes will occur immediately as the digit limit has been reached The two pulses signal that your code has been accepted If you get a single one second long red pulse you ve done something wrong Pressing fewer than 5 keys for example would be would be interpreted as a disallowed Program code You ll note that after the two confirming red flashes are seen the unit automatically returns to program mode rapid yellow flash You could exit program mode by either hitting the Bell key or waiting 30 seconds but you now want to program your User code Immediately enter the prefix 0 1 and then your user code from two to seven digits When you see the two confirming red flashes exit program mode by hitting
9. followed by the Bell Key note rapid yellow flashing LED program mode Enter prefix 0 1 followed immediately by a new 2 7 digit User code End your entry with Bell key or 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 new User code door should open The program code should need changing much less often To do it Enter old program code followed by the Bell Key note rapid yellow flashing LED program mode Enter prefix 0 0 followed immediately by a 5 7 digit new Program code End your entry with Bell key or 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 new Program code followed by the Bell Key to test it note rapid yellow flashing LED returns Press Bell key to terminate program mode or wait 30 seconds The logic behind this procedure is as follows All programming for the DK 26 starts with putting the unit into program mode except entering the single Hard code The unit is put into program mode by either pressing the Prgm Code button on the CPU board or entering a valid program code When you enter a program code however you have to terminate the sequence with the Bell Key This is for a little extra security An unauthorized person who came across a copy of the Program code might not know he
10. had to press the Bell key after entering it The prefix 0 0 causes the code which follows to be stored as the Program code The prefix 0 1 causes the code to be stored as a user code 4 2 2 ADDING MULTIPLE USER CODES The DK 26 has memory locations for up to 59 User codes This allows separate codes for individuals or groups which is a benefit because when one code is changed usually owing to a security worry the people who use the other codes don t have to learn a new code To program additional User codes you follow the procedures described above for setting the User code in memory location 01 but you employ memory locations 02 through 59 For example once the unit is in program mode rapid yellow flash entering 0 2 followed by a code sequence will enter a second User code The same is true when you enter prefixes 0 3 0 4 up to 5 9 When you re programming multiple User codes note that you can enter them one right after another When a code is accepted the unit signals by two red flashes It then automatically goes back into program mode and another code can be immediately entered without exiting program mode Be sure to test all the codes you have entered before you consider programming complete You can individually erase any code including the Program code by entering program mode pressing the prefix for the code 01 59 and then pressing the Bell key or waiting 5 seconds until you get the two red flashes 4 3 MASTERKEY USE OF THE H
11. 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 the lock DC locks operated in this way must not draw more than 2 Amps The positive DC terminal connects to the common of relay 1 and either the NO1 terminal if the lock is fail secure or the NC1 terminal if the lock is fail safe connects to the lock s positive power input This is shown in dotted lines You only connect one of these terminals Note that some DC locks are polarized and you must connect lock power correctly to positive and negative Others are not polarized and can be connected either way Consult the lock instructions Note installation of the MOV across the power wires to the lock The MOV is the black disk shaped component furnished loose with the DK 26 Its function is to absorb inductive kickback from the lock s coil Without the MOV this kickback voltage will arc over the
12. mode The purpose for this is to operate a real doorbell so that unauthorized persons outside the controlled door can request entry Most commercial doorbells are furnished with their own power supply so typical wiring is as shown in the drawing to the right DOORBELL POWER SUPPLY Note that if you don t plan to use this function a blank rectangular label is supplied which can be used to cover the BELL legend on the keypad face This avoids misleading a person on the outside of the door 6 2 DURESS FUNCTION The duress function is used for high security applications It allows a person being threatened to release the door but simultaneously create a silent alarm which would be employed to summon assistance To make this work obviously the threatened authorized person has to enter something different than a standard User code The DK 26 handles this requirement by establishing the Hard code as a duress code You need to do several things however to implement this Ordinary 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 two flash confirmation Exit program mode by pressing the Bell key or waiting 30 seconds Now when you enter a user code the door will open but when you enter the Hard code the door will open and the programmable relay will switch The door will r
13. problem and you Z need to know how to determine if the PolySwitch has tripped and how to correct the O problem and reset the PolySwitch PolySwitch 1 comes into play only if you are powering the unit from an AC source connected to the AC input terminals It protects against an internal short on the board in the components four large diodes that convert AC to DC If you are powering the board with DC voltage into the DC input terminals you can ignore PolySwitch 1 PolySwitch 2 protects against an internal DC short circuit on the CPU board PolySwitch 3 protects against a short circuit in the keypad which can be caused by skinned keypad wires or mis wiring the keypad cable into the CPU board terminals PolySwitch 3 will also trip if there are short circuit problems with the SRC REX UCD and HCD terminals To check the PolySwitches apply the probes of a voltmeter to both PolySwitch leads Note that you have to do this with power on the board If you are checking PolySwitch 1 set your voltmeter to AC Set it to DC for PolySwitches 2 and 3 In the normal condition the PolySwitch will be conducting current so you will read less than one volt A tripped PolySwitch acts as a high impedance resistor so you will read several volts across the PolySwitch leads If none of the three PolySwitches have tripped but the properly powered board will not operate its relay when SRC and REX are briefly shorted together the CPU board must be retu
14. relay contacts and Rev A 2 10 03 Page 6 reduce the switching life of the relay The arc also creates electronic noise 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 including all Securitron Magnalocks You don t need the MOV for these locks but if you are not sure it does no harm to install the MOV so long as the lock power is in the 12 24 volt range FIG 4 DC LOCK AC POWER WIRING m tn nnn nnn nnn nnn nnn nnn nnn nnn nnn nnn nnn nn nnn nnn nnn nnn nn nnn nnn nnn nnn gt O TRANSFORMER 12 OR 24 VAC d m 8 is NOTE MOV NOT REQUIRED IF S SECURITRON MAGNALOCK IS USED E o IF FAIL SECURE TIE TRS CN NC1 C1 NO1 7 H T 1 di 7 H H H y X ECRIRE MUERTE MESE EE DC FAIL SECURE OR FAIL SAFE LOCK T 3 3 3 DC LOCK WITH DC POWER Select a power supply of the same voltage as the lock 12 or 24 Make sure the capacity of the supply is large enough to operate both the 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 in fail secure and fail safe versions A fail secure lock is secure when not powered and a fai
15. 25 e 800 MAGLOCK e Fax 775 355 5636 e Website www securitron com An ASSA ABLOY Group company ASSA ABLOY Rev A 2 10 03 SECTION 4 2 KEYPAD CHANGEABLE PROGRAMMING Page 12 This section explains how to set up easy code change from the keypad by employing a Program code which is relatively constant and a User code which is often changed for better security SECTION 4 2 1 CHANGING THE USER AND PROG CODE FROM KEYPAD Page 13 This details the code changing procedure that should be taught to the end user SECTION 4 2 2 ADDING MULTIPLE USER CODES Page 14 The previous two sections explain how to set up keypad changeable programming for the common requirement of a single User code Up to 59 separate User codes can be added to memory so that individuals or groups can have their own code This section explains the procedure SECTION 4 3 MASTERKEY USE OF THE HARD CODE Page 14 The Hard code is normally used for fixed programming but in a multiple door installation it can be used as a masterkey code which will open all doors SECTION 4 4 SUBSET CODES Page 15 This section must be read for all multiple code installations SECTION 4 5 DELETING CODES Page 15 This section is most important for multiple code installation
16. ARD CODE The primary use for the Hard code is to allow simple single code fixed operation as is described in Section 4 1 The Hard code can only be set or changed from the Hard Code Rev A 2 10 03 Page 15 button in the CPU board It is deliberately kept separate from all programming functions Another use for it however is as a masterkey code For example consider a facility with multiple DK 26 s under the control of different departments Each department might want to employ different Program and User codes to restrict cross access but a common Hard code could be established for all of the units so that security management personnel could enjoy universal access This Hard code will never be lost from keypad operations the CPU board has to be accessed 4 4 SUBSET CODES When you recognize that the DK 26 accepts multiple codes of different lengths it is possible that one code will be a subset of another For example suppose you programmed 1 3 3 5 8 and then programmed 3 3 5 as another code When you try to enter 1 3 3 5 8 you can t complete the entry because when the unit sees the sequence 3 3 5 it will operate A real problem could occur if a User code was a subset of the Program 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 showing the single red error flash
17. CONTACTS 4 O wo eS r gt v O m m lr D m o ie lo lt com 8 I I g a 2 oO 2 gt 9 mo m m T I O ze U 8 T g O Qo U m D o O 2 g p m LY 62 Rev A 2 10 03 Page 5 Note installation of the MOV across the power wires to the lock The MOV is the small black disk shaped component furnished loose with the DK 26 Its function is to absorb inductive kickback from the lock s coil Without the MOV this kickback voltage will arc over the relay contacts and reduce the switching life of the relay The arc also creates electronic noise which could occasionally cause the microprocessor to malfunction The MOV should be spliced into the lock power wires as close to the lock as possible FIG 3 AC LOCK AC POWER WIRING m nnn nnn nn nn nnn nnn nnn nn nnn nnn nnn nnn nnn nn nnn nnn nnn nnn nnn nnn e TRANSFORMER HI rad 12 OR 24 VAC z NC1 Ct NOt AC FAIL SECURE 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 to maintain the DK 26 UL listed status The lock must accept full wave rectified DC power This
18. ED flash This is the opposite of the above problem A key is failing to be read when it is pressed This can happen because of mechanical failure within the switch element such that the key will not close or from a broken or mis wired keypad wire If however the problem is with a wire more than one key will be dead If just one key is not being echoed the problem is with the key itself You can of course use the unit for all operations that don t require that particular key but you will want to replace 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 programming instructions Read them again carefully Be sure you re not waiting more than 5 seconds between hitting keys as if you are the Rev A 2 10 03 Page iv entry will be ignored Finally note that if terminals SRC and UCD are connected all User codes will be disabled If terminals SRC and HCD are connected the Hard code will be disabled PROBLEM Beeper doesn t sound while the unit otherwise functions Note that the beeper could have been deliberately silenced by the unit having been sent a special command Even on a new unit this could have happened by factory error Attempt to restore the beeper by putting the unit into program mode and entering 7 2 You should see the two red flash confirmation If the beeper still doesn t work
19. I TAMPER ALARM FUNCTION Page 18 Someone entering 16 wrong digits while attempting to guess the code will activate the programmable relay SECTION 6 4 DOOR PROP ALARM FUNCTION Page 18 The programmable relay will activate if the door is left open too long SECTION 6 5 NIGHTLIGHT FUNCTION Page 19 The programmable relay will activate for five seconds when any key is pressed This can be used to turn on a lamp not supplied for operation in the dark SECTION 7 ADDITIONAL HARD WIRED OPTIONS Page 19 The sections that follow discuss additional ways to use the DK 26 SECTION 7 1 DUAL PAD OPERATION Page 19 This section applies if you want to use two Keypads reporting to one CPU Board for digital control of entry and exit SECTION 7 2 HARD WIRED CODE DISABLING Page 19 Through the use of jumpers or external switches you can disable the Hard code and or all User codes This is generally used with a time clock for day night operations SECTION 7 3 ALARM SYSTEM SHUNTING Page 20 The DK 26 can shunt an active alarm point for authorized entry SECTION 7 4 ANTI TAILGATING Page 20 With this f
20. N If it is next remove it from the GRN terminal and briefly touch it to terminal DC If the green LED comes on the problem is with the driver on the CPU board and the CPU board will have to be replaced If the LED does not come on the problem is with the LED in the keypad or with the internal wiring within the keypad The keypad will have to be replaced to restore operation of the LED PROBLEM Error signal one second long red pulse received while programming Anytime you receive an error signal retry the programming operation It s easy to mis hit one key If the error signal persists it is almost always a misunderstanding of programming procedures rather than a fault with the unit A product fault that impaired the operation of the microprocessor would generally prevent it from giving you the error signal When programming the hard code you directly enter the code once you are in hard programming mode slow yellow flash Remember you must never pause for more than five seconds while pressing keys The only way to get an error signal while programming the hard code is to enter an illegal one digit code When in program mode the most common error is to forget to enter the two digit memory slot prefix when attempting to program a code Valid prefixes are 00 59 and if this step is forgotten in an attempt to enter the code directly there are a lot of sequences that will create an error signal For example any sequence that starts with 6
21. PN 500 16900 Rev A 2 10 03 j CURITRO N ISO 900166 SECURITRON MODEL DK 26 DIGITAL KEYPAD TABLE OF CONTENTS AND GUIDE TO THIS MANUAL The DK 26 is a powerful and versatile product with many features and modes of operation In most applications you will use only some of these features so this table of contents includes a description of the type of application that applies to each different section By studying it first you can save considerable time by skipping over those parts of the manual that don t apply to your application SECTION 1 DESCRIPTION Page 1 SECTION 2 PHYSICAL INSTALLATION Page 1 SECTION 3 WIRING Page 3 SECTION 3 1 POWER SELECTION Page 3 5 section explains the power that must be used and gives you power consumption igures SECTION 3 2 CONNECTING THE KEYPAD CABLE TO THE CPU BOARD Page 3 SECTION 3 3 POWER AND ELECTRIC LOCK WIRING Page 3 This section introduces the different basic wiring schemes generally required for electric strike control no exit switch needed The three sections below provide separate drawings and descriptions depending on your power source and on the power required by the lock SECTION 3 3 1 AC LOCK WITH AC POWER
22. RCUIT AS SHOWN IN CIRCUIT AS SHOWN 3 6 THE REX FUNCTION Often when the DK 26 is used provision must be made to allow AN N O SWITCH people to use the door freely from the inside If an electric strike PC REX CLOSING BETWEEN Is used exit may be accomplished by purely mechanical means L SRC AND REX turning the doorknob If on the other hand a solenoid CAUSES TIMED operated or electromagnetic lock is used free exit is only RELEASE OF THE possible if a switch on the inside releases the lock DOOR Connection of this switch or switches is most easily accomplished by using the DK 26 s REX input terminal see Figure 2 REX stands for Request To Exit When a normally open switch activates the REX terminal the DK 26 s control relay will open the lock for the amount of time programmed into the DK 26 s timer The result is the same as if the DK 26 was used from the outside of the door The REX terminal is activated by being connected to the SRC voltage source terminal It will also activate if 12 or 24V is input to the terminal from the DK 26 s external power supply The drawing to the right shows the simplest connection to an external normally open momentary switch Any number of additional switches could be connected in parallel so that pressing any of them would activate the REX function An example of when this multiple switch capability is used would be an installation with an exit button at the door and a second one
23. User codes The yellow LED will usually come on steadily If it doesn t it means that the unit has a previous Hard code in memory and this is no problem as you will be overwriting the old Hard code Return to the beginning of this Section for fixed 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 code It is the User code which is employed regularly to gain access Knowledge of the Program code should be restricted to security management as its only use is to change the User code With this method of operation higher security is obtained because the end user can change the User code regularly or any time he feels it has been compromised With power applied to the unit note that the yellow LED is on steadily This signals that all code memories are empty you don t want any unknown codes present If the yellow LED is not on read the last two paragraphs in this section for the procedure to erase existing codes Once you have confirmed the steady yellow light on the keypad go to the CPU board and press the button marked Prgm Code for about one second see Figure 2 Returning to the keypad note the yellow LED flashing rapidly about three times a second This indicates program mode Within 30 seconds enter the prefix 0 0 and then your Program code from five to seven digits you can t use the
24. WITCH CAN STILL RELEASE THE LOCK FOR SAFETY Note that Figure 6 shows a DC fail safe lock virtually all fail safe locks are DC Power could either be furnished by an AC transformer which would connect to the AC IN terminals or a DC power supply which would connect to the DC IN OUT terminals If you have an SPDT exit switch available to double break REX the connection is shown in Figure 7 The difference is that you don t use the SRC terminal at all The REX terminal is triggered from the DC terminal via the NO contact of the SPDT switch Rev A 2 10 03 Page 10 FIG 8 DOUBLE BREAK WIRING FOR FREE EGRESS SPDT SWITCH FAIL SAFE ELECTRIC LOCK CPU BOARD SWITCH T WHEN THE EXIT SWITCH IS ACTIVATED THE NC CONTACTS OPEN WHICH RELEASES THE FAIL SAFE LOCK AT THE SAME TIME THE NO CONTACT DIRECTLY ACTIVATES THE REX INPUT THIS DEENERGIZES THE LOCK CONTROL RELAY WHICH RELEASES THE LOCK A SECOND TIME FOR THE AMOUNT OF TIME THAT HAS BEEN PROGRAMMED IF THE DK 26 SUFFERS A FAILURE THE EXIT SWITCH CAN STILL RELEASE THE LOCK FOR SAFETY 4 PROGRAMMING The DK 26 has ten numbered keys and a bell key which is used for several functions Each of these keys is read separately by the unit so the DK 26 is a true 11 digit access device This provides excellent security against a code being guessed Also the DK 26 employs non volatile EEPROM memory so that all programming is retained in a power failure Another point to note is t
25. YPAD gt 1 MOUNT SCREW TO ENGAGE SLOT AT TOP OF KEYPAD DRILL 1 8 3MM HOLE Jjovduns ONILNNOW cae 2 DRILL 3 8 10MM HOLE FOR CABLE 3 SECURE BOTTOM WITH SECOND gt pz SCREW COVER SCREW HEAD WITH DK 26 LABEL DRILL 1 8 3MM HOLE NOTE CHOOSE PHILIPS OR SPANNER gt TAMPER HEAD SCREW The CPU Board is furnished in a snap apart steel enclosure with the board itself mounted on plastic snap trak 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 Cable entry to the CPU board enclosure can be handled in one of two ways There is a hole in the bottom of the enclosure the use of which creates the most attractive installation as the cable is completely hidden Alternately there is a side knockout in the enclosure cover which permits surface mounting of the cable The side knockout also permits a wiring technique which is convenient when the CPU board enclosure is to be mounted in an awkward location such as above a drop ceiling You can pop the board itself out of its snap track and make all your connections with the bo
26. and NC2 into the ends of this wire When the DK 26 operates this connection will open preventing the alarm loop from closing alarm condition FIG 8 WIRING TO SHUNT ALARM SYSTEM ON DOOR TO ALARM PANEL DOOR SWITCH TO ALARM PANEL DOOR SWITCH CUT EITHER WIRE FROM SWITCH ALARM SIGNAL WHICH IS ALARM SIGNAL WHICH IS CLOSED WHEN DOOR IS CLOSED OPEN WHEN DOOR IS CLOSED OPENS TO ALARM CLOSES TO ALARM 7 4 ANTI TAILGATING Particularly when using the longer time ranges the end 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 DK 26 can be made to re engage the lock as soon as the door has re closed regardless of the status of the timer To implement this feature a special command has to be sent to the CPU board which will alter the function of either the HCD or UCD input terminal When you enable this anti tailgating feature you must give up the capability of disabling either the Hard code or all the User codes Rev A 2 10 03 Page 21 CONNECT A DOOR SWITCH WHICH Put the unit into program mode and enter 8 0 to assign this function to the HCD terminal or 8 1 to assign it to the UCD terminal You will see OPENS WHEN THE the two flash confirmation Then exit program if DOOR OPENS TO mode ES i UCD OR HCD rd DEPENDING ON WHICH Finall
27. ard in your hands The board is then re snapped into the plastic trak The enclosure cover snaps on with the wires emerging from the side knockout If you use this technique avoid touching the components or rear pins on the board as much as possible Static electricity can destroy the processor Also when you snap the board back in its track make sure it s securely done Sometimes you need to squeeze the outer lips of the track to insure that the board edges are really seated in the slot Rev A 2 10 03 Page 3 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 REST STATE MIN 7 mA 20 mA RELAYS LED S BEEPER ON MAX 160 mA 190 mA Be sure that your power source is of adequate capacity to operate both the lock and DK 26 If the installation is under powered the voltage of the supply will drop rapidly when the lock is energized and this can crash the microprocessor 3 2 CONNECTING THE KEYPAD CABLE TO THE CPU BOARD There are 12 color coded wires in the keypad cable Refer to Figure 2 and connect each wire to the indicated terminal on the CPU Board No other connections may be made to these terminals except if two
28. atter problem usually happens when insulation is scraped off some of the wires in the keypad cable as it s being pulled through the door frame You may be able to restore operation by rapping on all the keys If this works however it is likely only a temporary fix and you should be prepared to change the keypad Next check the wiring of the keypad cable into the board see Figure 2 If you don t see any problems the keypad will need to be replaced but you can restore partial use if you wish while awaiting a replacement Put the positive probe of a voltmeter on terminal WHT and successively apply the negative probe on terminals BLK GRY BRN BGE ORG PNK and VIO Good terminals will read about 11 volts Two terminals however will read about zero volts Remove the wires from the two terminals which read zero volts If you are wondering why a single down key does not create a single zero volt terminal read you should understand that the keys are in a two of seven matrix so the one to one relationship doesn t hold When you remove the two wires from the zero volt reading terminals you will disable several keys You will be able to determine which keys are working by pressing each key and seeing which ones are echoed by a beep and LED flash You can then establish a temporary Hard code using only the active keys by pressing the Hard Code button on the CPU board and following the instructions in Section 4 1 PROBLEM A key isn t echoed no beep or L
29. e time expires it will resecure immediately upon closure This is called anti tailgating and means that although you have selected a long release time a second person will not be able to use the door after a first person has because the door resecures immediately upon reclosure If the door remains open for a longer period of time than is set on the timer the programmable relay will switch and will remain energized until the door closes or the keypad is used again Note that if you are using the programmable relay for another function you can enable anti tailgating alone no alarm signal as is described in Section 7 4 AUDIBLE DOOR PROP ALARM SONALERT Connection from the programmable relay is generally not made to an alarm system as if an alarm system is active on the door you can get the same door open too long signal more 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 too long and this will act as a prompt for someone near the door to close it Sonalerts operate on 12 24 VDC so the wiring shown on the drawing to the right should be used To terminate this function and return the HCD or UCD input to its standard use and return the programmable relay to the doorbell function put the unit into program mode and enter 8 4 You will see the two flash confirmation Then exit progra
30. e is more than a five second gap between keys being pressed the unit will stop reading the sequence Note that a successful button press is echoed by a beep and a flash of the green LED When you have completed entering your code hit the Bell key and you should see the red LED display two pulses within a second If you don t hit the Bell key your code will be accepted anyway but it will take five seconds to see the two red flashes If you have selected a seven digit code the two red flashes will occur immediately as the digit limit has been reached The two pulses signal that your code has been accepted If you get a single one second long red pulse you ve done something wrong Pressing one key and waiting for over 5 seconds for example would be would be interpreted as a disallowed single digit code If you get the single red flash press the Hard Code button again and you can attempt to re enter a successful code Once you get the two red flashes re enter your code and the door should open Fixed programming is complete Should you ever want to change the code just press the Hard Code button on the CPU board again and repeat the procedure described above There is a minor wiring step that increases the reliability of a fixed code installation Since the DK 26 has multiple code capability but you only require single code use it s important to be sure that no other codes can operate the unit Following the programming steps in this Section will
31. e one of these disabling features Hard or User if you have implemented the door prop alarm Section 6 4 or anti tailgating Section 7 4 features These reassign one of the terminals WITH THE CONTACTS AS SHOWN THE HARD Rev A 2 10 03 Page 20 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 C1 NC1 and NO1 The most common use for the second pole C2 NC2 and NO2 is to shunt out an alarm system which would be connected to the door when the DK 26 is being utilized The idea is that if the door opens without the DK 26 having been activated an alarm signal should result When the DK 26 is employed to open the door the alarm signal should be shunted The alarm system will be connected to a door switch or other detector at the door via two wires You will need to determine if this loop is closed when the door is closed and opens when the door opens the most common or is open when the door is closed and closes when the door opens In the former case closed when the door is closed splice wires respectively from C2 and NO2 into the wires from the detector or switch When the DK 26 operates this connection will close preventing the alarm loop from opening alarm condition In the latter case open when the door is closed cut one of the alarm loop wires and splice wires respectively from C2
32. eature you can abort the DK 26 s timer once the door is opened to make sure only one person enters SECTION 7 5 WIRING WITH TOUCH SENSE BAR AND MAGNALOCK Page 20 This section provides a drawing for a popular combination of Securitron products APPENDIX A COMMAND SUMMARY Page i This section lists all possible command sequences that can be sent to the unit when it is in program mode These commands are referenced throughout the manual as they apply to different requirements APPENDIX B TROUBLE SHOOTING Page ii Rev A 2 10 03 Page 1 SECURITRON MODEL DK 26 DIGITAL KEYPAD INSTALLATION amp OPERATING INSTRUCTIONS 1 DESCRIPTION Securitrons 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 first step is to plan the physical location of the two components The keypad is normally sur
33. emain open for the amount of time programmed but the programmable relay will stay switched it latches until the hard code is entered a second time to reset it Use the programmable relay contacts CX NOX and NCX to report the releasing of the door under duress This can be done by interfacing with an alarm panel or dialer Note that a duress code is rarely used To make the code easier to remember you can select a Hard code that is close to the User code if only one User code is being employed or you can select a short hard code Note finally that selection of this option means you give up the opportunity to implement a doorbell or other use of the programmable relay Rev A 2 10 03 Page 18 6 3 ANTI TAMPER ALARM FUNCTION A person attempting to guess the code and pressing 16 wrong digits will put the DK 26 into alarm The keypad s beeper and green LED will operate for 30 seconds during which time the keypad will accept no input This is usually sufficient to deter anyone from trying to guess a valid code as millions of codes are possible with the DK 26 s true 10 digit operation However for high security applications particularly when a lot of User codes are active you can assign the programmable relay to operate during the alarm period Put the unit into program mode and enter 7 6 You will see the two flash confirmation Then exit program mode You have now the means to report attempts to guess a valid code This can be done by interfaci
34. es when employing a keypad on the inside of a door Check with your local building or fire department 7 2 HARDWIRED CODE DISABLING This means making a switch connection to the CPU board which will cause valid codes to not be accepted The DK 26 has two terminals marked HCD and UCD which will respectively disable the Hard code and all User codes Simply connect the SRC terminal to either of these terminals via an external switch and the respective codes will not function while the switch is closed Alternately if you supply 12V or 24V from the DC terminal to either of these terminals it will have the same effect pese The main reason for doing this is to support day night operations For example you could allow all User codes to be active during the day but disable them at night by closing a switch between SRC and UCD The Hard code would be the only method of entry at night Or you CODE IS DISABLED could have no Hard code programmed so that WHEN THEY SWITCH there would be no entry at night This could be E ed ALL USER CODES done by timer controlled contacts from a timer OR RELAY i WILL BE DISABLED such as Securitron s model DT 7 It s finally possible to flip the codes Hard and all User so that for example User codes are active only during the day and the Hard code is active only at night An SPDT switch or relay is needed to do this as the drawing to the right shows Note that you won t be able to us
35. face 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 that 2 alternate bottom screws are supplied with the unit One is a 10 spanner head for improved tamper resistance Alternately the 8 Phillips standard screw may be used After this peel the backing of the enclosed Securitron DK 26 label and affix it to the bottom of the keypad covering the head of the screw This not only improves the appearance of the keypad but helps foil casual vandalism 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 and are concerned that people will press the BELL key and expect someone to come to the door Rev A 2 10 03 Page 2 FIG 1 PHYSICAL INSTALLATION OF KE
36. function will override the one discussed in the previous paragraph To return the beeper to factory set default put the unit into program mode and enter 7 2 Finally you can reverse the red green LED logic so that the green light comes on when the red light did and visa versa To set this change put the unit into program mode and enter 7 3 You will see the two flash confirmation Exit program mode by hitting the Bell key or waiting 30 seconds If you make this change note that every time this manual discusses something that the red or green LED does it will be reversed Rev A 2 10 03 Page 17 To return the red green LED logic to factory set default put the unit into program mode and enter 7 4 6 USE OF THE PROGRAMMABLE RELAY The DK 26 CPU board includes a second relay whose 5 Amp SPDT contacts are marked CX NCX and NOX see Figure 2 This relay is employed for different functions which are selected by commands sent to the CPU board while the unit is in program mode In general you need to choose the function you want to make active for this relay if any and the following sections lay out the choices 6 1 DOORBELL FUNCTION As delivered the programmable relay will operate when the Bell key is pressed when the unit is in normal operating mode ready to accept a code The Bell key is used a great deal in programming operations but the relay will not operate during programming including initiating and exiting programming
37. g abuse misuse or an act of God EXCEPT AS STATED ABOVE SECURITRON MAKES NO WARRANTIES EITHER EXPRESS OR IMPLIED AS TO ANY MATTER WHATSOEVER INCLUDING WITHOUT LIMITATION THE CONDITION OF ITS PRODUCTS THEIR MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE Rev A 2 10 03 Page i APPENDIX A COMMAND SUMMARY WITH THE UNIT IN PROGRAM MODE FAST YELLOW FLASH 00 followed by 5 7 digits sets Program code 01 followed by 2 7 digits set first User code 02 followed by 2 7 digits sets second User code Additional User codes can be set up to the prefix 59 total 59 User codes 70 will sound beeper when door is open except toggle mode Echo and prompt beeps are retained 71 will silence beeper at all times 72 will return beeper to factory set 73 will reverse light logic red to echo green to show door is open 74 will return light logic to normal 75 will direct Hard code to programmable relay for duress entering Hard code releases door and switches programmable relay 76 will transfer programmable relay to alarm function 16 wrong digits switches programmable relay as well as locking out keypad for 30 seconds 77 will transfer programmable relay to light function relay operates for 5 seconds when any key is pressed 78 will return programmable relay to doorbell function 79 is alternate code delete Any valid code entered directly after the 79 command will be deleted 80 re assigns the HCD terminal to anti tailgating 81 re
38. hat all DK 26 codes will operate the unit when their sequence is entered regardless if other incorrect digits were entered before For instance if the correct code is 2 2 6 7 the unit will operate if 8 2 2 6 7 is entered An exception to this is if a total of 16 wrong digits are entered In that case an alarm function comes into play The keypad will lock itself out for 30 seconds and the beeper will sound continuously This feature discourages attempts to guess the code Before learning all programming options for the DK 26 you should decide how you want the unit to be used Then learn only the appropriate programming for that use This simplifies the task of operating the unit and cuts down on unneeded service calls The programming questions to ask are do you want a fixed code that will either never be changed or changed only rarely Or do you want regular code changes from the keypad This issue depends on the amount of security called for in the application Finally do you want multiple codes The DK 26 supports 59 The purpose of multiple codes is to assign different codes to individuals or groups Then if a code needs to be changed the other individuals or groups need not go to the trouble of learning a new code This is a convenience issue 4 1 FIXED PROGRAMMING Employ fixed 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 lowe
39. he exit button electric lock and DK 26 If the exit button has a set of normally open and normally closed contacts it should then be wired according to Figure 6 When the exit button is depressed its normally closed contacts directly break power to the lock 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 possible troubleshooting It is usually easier to get to the DK 26 CPU board than to get to the push button wiring in a service situation With wiring as shown in Figure 6 the push button NC contacts can be metered on the DK 26 CPU board If for any reason a failure occurs with the DK 26 a person can still exit by holding the exit button down while pushing the door open Note you should always consult your local building or fire department when securing doors that are part on an emergency exit path to make sure you are complying with local codes FIG 7 DOUBLE BREAK WIRING FOR FREE EGRESS TWO POLE SWITCH FAIL SAFE CPU BOARD ELECTRIC SWITCH LOCK T LNO NI 9G WHEN THE EXIT SWITCH IS ACTIVATED THE NC CONTACTS OPEN WHICH RELEASES THE FAIL SAFE LOCK AT THE SAME TIME THE NO CONTACTS CLOSE WHICH ACTIVATES THE REX INPUT THIS DEENERGIZES THE LOCK CONTROL RELAY WHICH RELEASES THE LOCK A SECOND TIME FOR THE AMOUNT OF TIME THAT HAS BEEN PROGRAMMED IF THE DK 26 SUFFERS A FAILURE THE EXIT S
40. he special case of AC power operating a DC lock see Figure 4 a short circuit in the external lock or lock wiring will trip either PolySwitch 1 or 2 but not both Attempt to reset the PolySwitch after disconnecting the external lock to determine if this is the problem If PolySwitch 3 has tripped the overload condition is in the keypad wiring or in terminals SRC REX UCD and HCD Carefully make sure that all keypad wires are connected to the correct terminals If they are temporarily disconnect the keypad and attempt to reset PolySwitch 3 by de powering the board for 5 seconds Once the board has been re powered momentarily connect SRC to REX to see if the board will function the lock control relay will operate If the CPU board resumes function reconnect the keypad If PolySwitch 3 trips again the keypad will need to be replaced If the CPU board did not resume function disconnect any wires on the SRC REX UCD and HCD terminals and attempt reset If this does not restore function to the board the board will need to be replaced PROBLEM Keys do not operate but a beep is heard every five seconds This is a diagnostic feature which indicates that one of the keys is being read as down always being pressed In that condition the CPU board will not be able to read any other keys It can happen because of mechanical failure within the switch element such that the key really is down or keypad wires that are shorted to each other The l
41. ing controlled by the DK 26 is drawing too much current for the power supply Remove the lock from the circuit If this restores proper voltage and operation of the DK 26 you ll have to determine if the power supply is undersized or if there is a short circuit in the lock wiring which is pulling down the power supply If the DK 26 is receiving specified voltage briefly short terminal SRC to terminal REX You should hear the relay click This confirms that the CPU board is working but for some reason it s not reading the keys Make sure that the keypad cable is connected exactly as shown in Figure 2 It is fairly easy to skip a terminal when connecting the keypad cable and also a strand of wire may jump between two terminals Pay particular attention to the keypad white wire going into terminal WHT If this wire is not connected the keypad will appear to be dead If the relay doesn t operate when SRC and REX are connected the CPU board has either tripped one of its automatic fuses or has some major problem requiring replacement The DK 26 employs three special type fuses called PolySwitches PolySwitches look like capacitors To identify them on the board note the drawing to the right When a PolySwitch senses a current overload problem it automatically adds a uU U o o N high resistance to the circuit which limits current flow to about 100 mA thereby protecting the circuit Each PolySwitch protects against a particular
42. instead of the two flash confirmation signal You ll get the same error if you try to enter a duplicate code If you are trying to enter a code and see it rejected by the error signal carefully check your list of other codes You are probably attempting to enter a subset code If the security procedures of the installation allow individuals to choose their own codes without reference to a list the users need to be advised that they may have to try alternate codes if the one they prefer is rejected as a subset Other typical reasons for code rejection are covered in the troubleshooting section at the end of the manual 4 5 DELETING CODES Any code can be deleted by calling it up and hitting the Bell key rather than entering a new code which would over write the old one Alternately if you don t hit the Bell key but don t enter a new code the unit will time out and still delete the code To delete the Hard code press the Hard Code button on the CPU board confirm that you are in hard program mode slow yellow flash and press the Bell key or wait 30 seconds To delete the Program code put the unit into program mode fast yellow flash from the Prgm Code button or from the existing Program code Enter 0 0 and press the Bell key or wait five seconds You ll see the two red confirmation flashes You ll need to then press the Bell key again to exit program mode or wait 30 seconds Note that it can be considered logical to operate without a
43. keypads are used with one CPU board 3 3 POWER AND ELECTRIC LOCK WIRING The wiring scheme for electric lock control varies depending on the type of lock and the desired control The following sections provide drawings and explanations for different types One general point is that the DK 26 s lock control relay has 5 Amp contacts Most electric locks draw much less If however you are using a specialty lock which draws more than 5 Amps or has a higher in rush current purchase a high current relay and use the DK 26 s contacts to switch this relay while using its high capacity contacts to switch the lock Note finally that the DK 26 includes additional options which are covered in Sections 6 and 7 To determine the complete wiring for your installation begin with the drawings shown in Section 3 and then check Sections 6 and 7 to see if you will require any of the additional features 3 3 1 AC LOCK WITH AC POWER This is the simplest installation possible with the DK 26 A fail secure lock operating on AC is used This is generally an electric strike Fail secure means that the lock is secure when it is not powered Power is applied to release the lock Referring to figure 3 select a transformer of the same output voltage as the lock 12 or 24 VAC 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 to maintain the DK 26 UL listed statu
44. l safe lock is secure when powered All magnetic locks are fail safe Figure 5 shows correct wiring The positive DC terminal connects to the common of relay 1 and either the NO1 terminal if the lock is fail secure or the NC1 terminal if the lock is fail safe connects to the lock s positive power input This is shown in dotted lines You only connect one of these two terminals Note that some DC locks are polarized and you must be sure to connect the lock power wires correctly to positive and negative Others are not polarized and it doesn t matter which way they are connected Consult the lock instructions Note installation of the MOV across the power wires to the lock The MOV is the small black disk shaped component furnished loose with the DK 26 Its function is to absorb inductive kickback from the lock s coil Without the MOV this kickback voltage will arc over the relay contacts and reduce the switching life of the relay The arc also creates electronic noise which could occasionally 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 including all Securitron Magnalocks You need not employ the MOV for these locks but if you are not sure it never does any harm to install the MOV so long as the lock power is in the 12 24 volt range Rev A 2 10 03 Page 7 FIG 5 DC LOCK DC POWER WIRING p
45. m mode Rev A 2 10 03 Page 19 6 5 NIGHTLIGHT FUNCTION When this function is selected the act of touching any key will operate the programmable relay for five seconds This may be used to turn on a lamp directed at the Keypad at night so that the person using the Keypad can see to enter the code Put the unit into program mode and enter 7 7 You will see the two flash confirmation Then exit program mode Note that selection of this option means you give up the opportunity to implement a doorbell or other use of the programmable relay To return the programmable relay to factory set doorbell function put the unit into program mode and enter 7 8 You will see the two flash confirmation Then exit program mode 7 ADDITIONAL HARD WIRED OPTIONS 7 1 DUAL PAD OPERATION If keypad control from both sides of the door is desired two keypads can be connected to one CPU Board Simply put the colored wires from both keypads into the appropriate terminals on the CPU Board such that 2 wires are in each terminal Either keypad will then be able to release the lock and both keypads will beep and illuminate their LED s when either one is used Two is the maximum number of keypads that can be connected to one CPU Board Note that in the unusual case where both keypads are being used simultaneously the door will not release as the sequence will certainly be disturbed Only one keypad may be used at a time Be sure you don t violate egress building cod
46. mentioned at the beginning of this section here is the procedure to follow if you don t get a steady yellow light on power up The absence of the yellow light means that for any reason the unit already has one or more codes in memory You must erase these other codes to be certain that the unit will operate only on the codes you plan to enter Follow the steps shown below Press the Hard Code button on the CPU board for one second Confirm slow flashing yellow LED Press the Bell key yellow flashing stops Confirm two red flashes Press the Prgm Code button on the CPU board for one second Confirm fast flashing yellow LED Enter 8 8 followed by the Bell key or wait 5 seconds Confirm two red flashes Extinguish the fast yellow flashing LED by pressing the Bell Key or waiting 30 seconds This procedure has erased any Hard code that was present see Section 4 1 and all user codes The yellow LED will usually come on steadily If it doesn t it means that the unit has a previous Program code in memory and this is no problem as you will be overwriting the old Program code Return to the beginning of this section for keypad changeable programming 4 2 1 CHANGING THE USER AND PROGRAM CODE FROM THE KEYPAD This is the day to day procedure that should be taught to the end user Normally the end user will not access the CPU board Everything should be done from the keypad To change the User code Rev A 2 10 03 Page 14 Enter program code
47. ng with an alarm panel or dialer Note finally that selection of this option means you give up the opportunity to implement a doorbell or other use of the programmable relay 6 4 DOOR PROP ALARM FUNCTION This function provides enhanced security at the door by creating an alarm signal any time the door is left open too long while being used for entry or exit With the function enabled select a relatively long door open time see Section 4 5 to set timer You will then need a door switch whose contacts open when the door opens To wire the door switch follow the drawing to the right You DOOR SWITCH will give up the function of disabling either the Hard code or all the User codes see Section 7 2 Put the unit into program mode and enter 8 2 to put this feature on the HCD terminal or 8 3 to put it on the UCD terminal You will see the two flash confirmation Then exit program mode The respective input terminal will have its meaning redefined You will also give up the opportunity to implement a doorbell or other use of the programmable relay CONNECT A DOOR SWITCH WHICH OPENS WHEN THE DOOR OPENS TO UCD OR HCD DEPENDING ON WHICH COMMAND YOU CHOOSE Now when a code is entered or the REX input is used the door will release for the relatively long period of time programmed If the door is not opened at all the lock will resecure when the set time expires and nothing further will happen If the door is opened and recloses before th
48. ocks can often be a source of considerable electrical noise Noise can also come from the keypad cable particularly if its length has been extended There is no specific distance which is a limit for an extended keypad cable Shorter is always better as cable noise varies with the proximity of noise producing devices such as motors fluorescent or neon lighting etc The same problem can occur if the cable from an exit switch is extended a long way from the CPU board If there are noise sources it may be necessary to limit the cable run distances while also trying to avoid the noise sources If the problem shows up frequently it is usually bad power This particularly occurs when 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 the microprocessor The solution is either to use a power supply with greater capacity or use two power supplies one to operate the DK 26 and the second to operate the fail secure lock through the DK 26 s lock control relay IF THE PROBLEM PERSISTS CALL SECURITRON TOLL FREE 1 800 MAG LOCK
49. ode 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 control relay just as if you entered the User code 5 CHANGING LED AND BEEPER OPERATION As delivered the DK 26 echoes key presses by a short beep and a short flash of the green LED The red LED comes on to show that the door has been released and also to confirm or reject programming commands two flashes confirm one rejects As an issue of individual preference these operating defaults can be changed The beeper can be assigned to sound when the door is released f this is done it will continue to sound for its other functions echoing keys and continuously sounding for 30 seconds if 16 wrong keys have been entered Users find this function helpful if a silent type of electric lock is being employed such as an electromagnetic lock When the person attempting to enter hears the beeper he is prompted to open the door To set this change put the unit into program mode and enter 7 0 You will see the two flash confirmation Exit program mode by hitting the Bell key or waiting 30 seconds Some customers want to silence the beeper as its sound can be considered annoying in some environments To set this change put the unit into program mode and enter 7 1 You will see the two flash confirmation Exit program mode by hitting the Bell key or waiting 30 seconds This
50. ou are using the second pole of the DK 26 s lock control relay to shunt an alarm system see Section 7 3 You would then want the Touch Bar to operate the DK 26 s lock control relay in double break fashion so that the alarm system is shunted both for entry and exit Simply follow Figure 9 except also connect the blue and orange wires from the Touch Sensor to terminals SRC and REX on the CPU board as well as connecting the second pole of the lock control relay to the alarm point as shown in Section 7 3 FIG 9 WIRING OF DK 26 TOUCH SENSE BAR AND MAGNALOCK NOTE SEE FIG 2 FOR 12 WIRE IF AC POWER IS BEING USED 9 CONNECT 12 IP ee OR24vAcTO 2 AC IN TERMINALS O i AO CPUBOARD i IFDCPOWERIS y BEING USED E l RE CONNECT 12 219 OR24VDCTO 5 MAGNALOCK DC IN OUT i TERMINALS BE tX secet cr cto A Mene d BLACK SURE TO OBSERVE POLARITY POWER SUPPLY VOLTAGE MUST MATCH VOLTAGE OF MAGNALOCK Rev A 2 10 03 Page 22 MAGNACARE LIMITED LIFETIME WARRANTY SECURITRON MAGNALOCK CORPORATION warrants that it will replace at customer s request at any time for any reason products manufactured and branded by SECURITRON SECURITRON will use its best efforts to ship a replacement product by next day air freight at no cost to the customer within 24 hours of SECURITRON s receipt of the product from customer If the customer has an account with SECURITRON or a valid credit card the customer may order an advance re
51. placement product whereby SECURITRON will charge the customer s account for the price of the product plus next day air freight and will credit back to the customer the full amount of the charge including outbound freight upon SECURITRON s receipt of the original product from the customer SECURITRON s sole and exclusive liability and customer s sole remedy is limited to the replacement of the SECURITRON product when delivered to SECURITRON s facility freight and insurance charges prepaid by customer The replacement at SECURITRON s sole option may be the identical item or a newer unit which serves as a functional replacement In the event that the product type has become obsolete in SECURITRON s product line this MAGNACARE warranty will not apply This MAGNACARE warranty also does not apply to custom built to order or non catalog items items made by others such as batteries returns for payment distributor stock reductions returns seeking replacement with anything other than the identical product or products installed outside of the United States or Canada This MAGNACARE warranty also does not apply to removal or installation costs SECURITRON will not be liable to the purchaser the customer or anyone else for incidental or consequential damages arising from any defect in or malfunction of its products SECURITRON does not assume any responsibility for damage or injury to person or property due to improper care storage handlin
52. r security Rev A 2 10 03 Page 11 traffic control applications as the longer the code remains unchanged the greater the risk that an unauthorized person will be able to learn it The DK 26 makes it simple for you to program the unit in this fixed way You will utilize a push button set single code called the Hard code With power applied to the unit note that the yellow LED is on steadily This signals that all code memories are empty This is important as you don t want any unknown codes present in the unit If the yellow LED is not on read the last two paragraphs in this section now for the procedure to erase existing codes Once you have confirmed the steady yellow light on the keypad go to the CPU board and press the button marked Hard Code for about one second see Figure 2 Returning to the keypad you will see the yellow LED flashing slowly about once per second This indicates hard programming mode Within 30 seconds simply enter your code from two to seven digits you can t use the bell key but repeating digits is OK If you wait longer than 30 seconds to start your code entry the programming window will terminate and you ll have to press the Hard Code button again In general longer codes provide more security but are less convenient to remember and enter However many users like seven digit codes as they can be phone numbers which are easy to remember Do not pause while you re entering the code as any time ther
53. rned for replacement to the factory Any time you find a tripped PolySwitch you have to understand how to reset it Overload current 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 the overload condition you have to depower the board for 5 seconds and the PolySwitch will reset itself Rev A 2 10 03 Page iii If PolySwitch 1 has tripped visually inspect the four large diodes on the board to see if a loose wire has fallen on them to create a short circuit If you do not find such a physical problem that can be easily corrected the board should be replaced although you should be aware that it can be operated with no problems from a DC power supply connected into the DC input terminals if only PolySwitch 1 has tripped Read the special case paragraph below for another possible cause if you are using AC power to operate a DC lock If PolySwitch 2 has tripped and you are using DC power make sure your input polarity is correct see Figure 2 Reversing your input polarity will trip PolySwitch 2 Otherwise look for any loose wires that could be creating a short circuit anywhere on the board If you can t correct the fault that is tripping PolySwitch 2 the board must be replaced Read the special case paragraph below for another possible cause if you are using AC power to operate a DC lock In t
54. s The two transformer secondary wires connect to the AC input terminals as shown there is no polarity with AC Power from one terminal then goes to the common of relay 1 The NO contact of relay 1 will power the lock releasing the door when a correct code is entered Note that AC locks are normally all fail secure If you come across a fail safe AC lock secure when powered you would merely make the connection to the lock from the NC1 rather than NO1 terminal Rev A 2 10 03 Page 4 FIG 2 OVERVIEW OF CPU BOARD O 000005 KEYPAD CABLE Top 2ESRBBREEF REAR O amp l jo fF g 5l jo im m 2 m 2 K R m M o E m Z z e D Q 2 mmm m SaRR RR SER EG KH S GS S B GB G f S fv OIA Nd 9HO 39g NH8 AHO Wid LHM N1d Q3H TAA NHO MORSEN m uD o MICROPROCESSOR 12 24 AC POWER zd mn 88 oz AUX FREE TERMINAL 7 SOCKET iw 12 24 DC NEGATIVE 9 Z SPDT 12 24 DC POWER amp RELAY DPDT RELAY DC TERMINALS MAY ALSO BE USED AS O O OUTPUT TO POWER PRGM HARD DC LOCK IF AC CODE CODE src REX UCD Hep Nex CX Nox NC2 C2 noz NC1 C1 o POWER IS SUPPLIED TOI E MI SO P4 O JJ w 22 O M G d Z amp amp PROGRAM LOCK CONTROL 2 S G ct mo amp RELAY RELAY CONTACTS m D 3 G x
55. s but should at least be scanned for all installations as it explains all code deletion procedures SECTION 4 6 SETTING THE TIME RANGE AND TOGGLE MODE Page 16 As factory set the DK 26 will release the lock for five seconds This section explains how to change that setting and enable toggle mode where successive code entries will energize and then deenergize the lock control relay SECTION 5 CHANGING LED AND BEEPER OPERATION Page 16 Special commands can be sent to the CPU board from the keypad to change the way the beeper and LED s function SECTION 6 USE OF THE PROGRAMMABLE RELAY Page 17 The CPU board has a second relay that can be assigned to any of several functions which are explained in the following sections These are enhancements to a standard installation and are therefore not always used SECTION 6 1 DOORBELL FUNCTION Page 17 Pressing the Bell key will energize the programmable relay which can be used to summon someone to the door SECTION 6 2 DURESS FUNCTION Page 17 This section applies only in high security applications where you require the user to be able to activate a silent alarm if someone is forcing him to open the door via the Keypad The programmable relay is used to send this signal Rev A 2 10 03 SECTION 6 3 ANT
56. special prefix will immediately delete all User codes and you ll immediately receive the two red flashes There is no need to hit the Bell key as it is used for early termination of sequences that don t have a fixed length typically codes 8 8 as a prefix is a complete command You will then need to press the Bell key to exit program mode or wait 30 seconds Deletion of all codes is typically done when you have lost accurate knowledge of what codes are in memory It s best to delete them all and program a new set 4 6 SETTING THE TIME RANGE AND TOGGLE MODE The DK 26 will release the lock it controls for a default time of 5 seconds when a correct User code is entered This can be changed to any value from 1 99 seconds by entering a special programming sequence With the unit in program mode enter key 9 followed by any two digit entry from 01 to 99 You will then see the double red flash immediately If you get the single error flash you probably entered only one digit Then exit program by hitting the Bell key or waiting 30 seconds Enter a correct User code to test that the changed time is working The DK 26 will operate in toggle mode if key 9 followed by 00 is entered when the unit is in program mode In toggle mode operation the relay will energize when a correct code is entered and deenergize when a correct code is entered a second time Toggle mode is generally used for the application where the door is released all day by entering a User c
57. the Bell key or waiting 30 seconds If you get the single error pulse note that the unit will automatically return to program mode and you can attempt to re enter your user code If you continuously get the error signal refer to the troubleshooting section which explains all the possible reasons for a code not being accepted Rev A 2 10 03 Page 13 After you ve completed your entries test your user and program codes by entering them The user code should open the door The program code should cause the yellow LED to flash rapidly program mode Exit the program mode by hitting the Bell key Below we show a step by step summary of programming the two codes Power up unit confirm steady yellow LED Press the Prgm Code button on the CPU board for one second Confirm rapid flashing yellow LED Within 30 seconds of pressing Prgm Code button enter prefix 0 0 followed immediately by a 5 7 digit Program code End your entry with Bell key or wait 5 seconds Note two red LED flashes for confirmation note rapid yellow flashing LED returns Enter prefix 0 1 followed immediately by a 2 7 digit User code End your entry with Bell key or 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 User code door should open Re enter Program code followed by the Bell key yellow LED should rapidly flash terminate with Bell key Finally as
58. the positive probe on WHT and when key 1 is pressed you will read roughly zero volts on VIO and BRN the other terminals in the matrix will be reading about 11 volts The terminal pair that will show zero volts for the other keys are as follows 2 VIO GRY 3 VIO BLK 4 PNK BRN 5 PNK GRY 6 PNK BLK 7 ORG BRN 8 ORG GRY 9 ORG BLK 0 BGE GRY BELL BGE BLK PROBLEM Unusual operation complained of after some operating history Unusual operation can be caused by the microprocessor in the CPU Board being disturbed by electrical noise Symptoms can vary quite a bit The unit may forget its codes the action of the keypad beeper may become drawn out or erratic the timer may function at widely varying ranges etc To cure the problem remove power from the CPU Board for about 10 seconds then reconnect it This forces the microprocessor to reset itself and reload its program If the unit has functioned for a long period of time without incident this may be an adequate fix The problem may never reoccur and the end user should be made aware of this simple fix if it should reoccur All microprocessors can sometimes crash and they are restored by reset f however the problem is more persistent steps can be taken to guard against electrical noise problems You should make sure that the MOV furnished with the unit is properly installed across the electric lock review Figures 3 5 The inductive kickback from electric l
59. venient Using the example of a plug in AC transformer you would connect one leg of the transformer output to one AC IN terminal and the other to F You would then connect the NC contacts from the fire alarm system to the other AC IN terminal and F See the drawing to the right 3 5 ADDING OTHER LOCK CONTROL SWITCHES The drawings in Section 3 3 are valid for simple installations where the DK 26 is the only control device that can release the electric lock Often however additional control devices are called for The most common is some type of exit switch and this issue is covered in the next Section Sometimes other control switches are needed which are not appropriate for the REX input as use of this input triggers the timed release capability of the DK 26 WHEN THE FIRE ALARM CONTACTS OPEN ALL POWER WILL BE REMOVED FROM THE DOOR A typical example would be a switch located centrally which would release the lock in response to an intercom call for example If the lock is fail safe the switch will need to break power to the Rev A 2 10 03 Page 8 lock and if it s fail secure the switch will need 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 FOR NON TIMED REMOTE FOR NON TIMED REMOTE RELEASE OF FAIL SAFE RELEASE OF FAIL SECURE LOCK PLACE NC CONTACTS LOCK PLACE NO CONTACTS IN CI
60. will be rejected 8 5 is also illegal Or if you entered just 9 2 the unit would read 9 as an attempt to change the door open time and then reject a single digit new time Another source of the error signal would be an illegal attempt to enter a program code of less than five digits after prefix 0 0 Finally while programming multiple codes you will get an error signal if a code you re attempting to program is a subset of one already in memory or a duplicate see Section 4 4 PROBLEM Door opens on a short code that wasn t programmed This can arise through an unnoticed programming error Suppose you want to program 4 5 1 2 But when the unit is in program mode you forget to put in the two digit memory slot prefix but just directly enter 4 5 1 2 The microprocessor will accept this sequence and interpret it as code 1 2 in memory 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 sequence that it will be entered When you have any evidence that unknown codes particularly short ones are in the unit it is best to erase all User codes and reprogram Rev A 2 10 03 Page v PROBLEM How to check the Keypad For reference when each key is pressed two terminals will measure zero volts with respect to the WHT common terminal You can use a voltmeter to see that each key is working correctly Put
61. y connect a door switch as shown in the drawing to the right and you will see that the door DOOR SWITC COMMO YEN ne will always relock immediately when it recloses regardless of how much time is left on the timer The feature will operate when the door has been released from the keypad or from the REX input see Section 3 6 Note that to disable the anti tailgating feature and return full function to the HCD and UCD terminals put the unit into program mode and enter 8 4 Note that the DK 26 supports a more powerful anti tailgating feature which incorporates an alarm signal through the use of the programmable relay Read Section 6 4 for details 7 5 WIRING WITH SECURITRON S TOUCH SENSE BAR AND MAGNALOCK The DK 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 opens the door in a single motion you do not want to activate the DK 26 s timer which would only serve to keep the lock released for a longer time thereby reducing security Another potentially confusing element is that the Touch Sense Bar is also a powered device which operates most reliably when it is constantly powered The drawing shows a wiring method that is applicable for either an AC or DC power supply naturally the supply voltage must be matched to the lock voltage Note that a variation of this wiring scheme could be desired if y

Assa DK-26 User's Manual

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