Securitron DK-XB - Manual

Securitron Magnalock Corp. www.securitron.com
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© Copyright, 2011, all rights reserved PN# 500-20300
Page 1 Rev. D, 06/11
SECURITRON MODEL DK-26XB, DK-16XB, DK-XB KEYPAD EXPANSION
INSTALLATION AND OPERATING INSTRUCTIONS
1. DESCRIPTION
This manual explains an “expanded” DK-26 or DK-16 digital keypad. It is used as an annex to
the standard DK-26 manual. Expansion is accomplished by the addition of a small
auxiliary circuit board which mounts in the CPU board enclosure via double stick tape.
Additionally, the microprocessor on the standard CPU must be changed. The two boards connect
together via a ribbon cable which carries 14 pin IC type connectors on each end. The connectors
plug into sockets on each board.
When you order a complete expanded unit (DK-26XB or DK-16XB) the auxiliary board has
been factory installed in the CPU enclosure and has been connected to the main CPU board.
In addition the microprocessor has been changed. When you order the expansion kit (DK-XB)
you receive the auxiliary board, the ribbon cable and a replacement microprocessor.
Expansion of the digital keypad yields the following new features:
 The number of user codes is increased from 59 to 119.
 A conventional serial computer printer can be attached to the unit to obtain date/time/user#
records of entry activity.
 Codes may be automatically generated from a seed number rather than being individually set
up.
 A second programmable relay is added.
2. PHYSICAL INSTALLATION
2.1 IF YOU HAVE RECEIVED A COMPLETE UNIT
If you have ordered and received a factory expanded unit (DK-26XB or DK-16XB) the auxiliary
board has already been installed in the CPU enclosure. You must however remove the paper
insulator on the lithium battery on the expansion board. This battery retains the date and
time in a power failure. The insulator is present so the battery won’t partially discharge while
the product is being stored prior to installation. You have nothing further to do other than the
normal physical installation steps explained in the main manual.
2.2 IF YOU HAVE RECEIVED AN EXPANSION KIT
Part number DK-XB is an expansion kit consisting of the auxiliary board, ribbon cable and
replacement microprocessor. You will have to install these items in the CPU enclosure (see
Figure 1) but first make sure that your CPU board will accept expansion as earlier
versions of the DK-26/16 CPU will not accept expansion.
If the CPU board is blue or is marked “REVISION D” or earlier, it cannot be expanded.
If the CPU board is black and is marked “REVISION E” or later, it can be expanded.
Figure 1 shows the CPU enclosure with the top removed. Make sure power is removed
before installing the expansion board. You will affix the expansion board to the side of the
enclosure as shown with the supplied double stick tape. The ribbon cable routes under the CPU
board and plugs into the “Aux Socket” on the CPU board. (Note that you can pull the CPU board
out of its snap trak mounting to facilitate routing the cable under the CPU board.) It is
possible to plug this cable connector in backwards (incorrectly). Note in the drawing
how the ribbon passes over the socket and then turns back on itself. This is the only correct
orientation of the ribbon cable connector into the Aux Socket. Finally, the microprocessor that is
furnished in the standard CPU board must be replaced with the “expanded” unit supplied with
the kit. Note the position of the notch in the microprocessor as shown in Figure 1. Be careful in
handing the replacement microprocessor (never touch the pins) as it can be damaged from
static electricity from your body. Your final step is to remove the paper insulator on the
lithium battery on the expansion board. This battery retains the date and time in a power