Door Control Unit User Manual
Updated until firmware 404p - 35 -
19. We have our own Wiegand card readers and door strikes with the following
specifications. Can we connect these to the DCU?
The maximum current draw for the standard 26-bit Wiegand card reader we use is
150mA@12Vdc (50mA@12Vdc in standby mode)
The maximum current draw for the electric door strike we use is 320mA@12Vdc in the
Fail Secure mode (240mA@12Vdc in the Fail Safe mode)
The power requirement for the DCU is 3A@12Vdc. the DCU supplies power to two
readers and one lock but we will use only one reader on the DCU.
The power requirement for the CCU is 1A@12Vdc. the CCU supplies power to one
reader and one lock.
Could you confirm that the power supply through the CCU/DCU is sufficient for the card
reader (150mA@12Vdc) and the door electric strike (320mA@12Vdc in Fail Secure) and
the CCU/DCU itself?
Yes, This is confirmed.
20. Is the 1A@12vdc power supply included with the CCU standalone? Otherwise can
we use any higher power supply like 1.5A for the CCU? How many mAmps are
allocated to the Lock and how many mAmps are allocated to the Reader?
You can only use the power supply we include with the CCU. If you use your own power
supply this may damage the unit and also it will void the warranty.
For the specification of the CCU, we provide 500 mA for the Door Lock and 200 mA for
the Access Reader. This supports your needs.
21. The distance between the furthest controlled door AND our IT Room where the
Door Control Unit (DCU) will be, is 200 feet maximum.
So the maximum total length of the electrical circuit is 2*200 feet=400 feet
maximum (121.92 meters)
Please keep in mind that we want to install the DCU as well as other the CCU in the
IT Room at the same place as the centralized UPS backup.
We have installed 6-conductor 18 AWG cable for the card readers.
We have installed 2-conductor 16 AWG cable for the electric door strike.
To convert these multi-conductor cables into RJ45 plugs we will use this kind of
breakout board which accepts up to 16 AWG wire sizes:
http://www.winfordeng.com/products/brk8p8c.php
Your team has already sent the new wiring diagram for the card reader and the
lock connections after we sent you the digrams from the reader and lock supplier.
These RJ45 convertor boards will be installed not far from the DCU and CCU with
approx. 3 feet 24 AWG CAT6 patch cables (~1 meter)
According to the maximum total length of the electrical circuit (400 ft or 120
meters) and the fact that we will use 2 kinds of cables for the door lock (3 feet of 24
AWG CAT6 patch cable then 200 feet of 16 AWG 6-conductor) do you see any
problem such as potential voltage drop that would prevent the entire system from
working?
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