12-2020
dormakaba Canada Inc. RAC5 XT Installation Guide – PK3737 | 14
The following table indicates the maximum recommended wire length that can be used for typical locking
devices, based on wire gauge.
Locking
Device
Type
Typical
Current
(A)
Maximum Recommended
Wire Length,
One-Way (feet)
AWG
18
AWG
16
AWG
14
AWG
12
Electromag.
Lock
0.28
168
266
425
675
Electric Strike
0.45
105
166
265
420
Double Electro.
Lock
0.46
102
162
258
410
Other Devices
0.75
63
100
160
250
NOTE:
The Maximum Recommended Wire Length is the approximate wire length that causes a 5%
voltage loss, using a 12-volt locking device at the rated current included.
The table is for reference only. Actual wiring requirements for specific devices may
differ. Always follow the locking device manufacturer’s wiring recommendations as
well as local building codes.
2.
Install and route a 2-conductor cable from the controller PCB to the desired location of the electric strike
or electromagnetic lock.
3.
If installing an electric strike, install the diode across the terminals of the locking device, using the crimp
connectors provided in the hardware bag if needed.
Do not reverse the diode polarity as indicated on the wiring diagram.
To prevent a possible short, the diode must not be in contact with electric strike. If
required, cut the diode ends shorter.
4.
Mount the locking device in the desired location and connect as per manufacturer’s instructions. For
connections between locking device and controller PCB, refer to Annex B.
4.2.3.2 Request to Exit Button (REX)
1.
Refer to Annex B for detailed wiring.
2.
Mount the device at the desired location and run a 2-conductor cable from the request to exit button to
controller PCB connecter J8, pins 3 & 4. Connect as per Annex B.
4.2.3.3 Remote Unlock Button
1.
Refer to Annex B for detailed wiring.
2.
Mount the device at the desires location and run a 2-conductor cable from the remote unlock button to
the controller PCB connector J8, pins 1 & 2. Connect as per Annex B.
CAUTION
IMPORTANT
CAUTION
