© BQT Solutions (SEA) Pte Limited
Page 4
4. PRE - INSTALLATION ASSESMENT
4.1 Mechanical
The COBALT-mini is designed for mortise installations as this offers a discrete solution as the lock and strike plate
can be embedded into the door and frame. In some instances however mortise installation is not possible so by
utilizing the YD30M housing, surface installation of the COBALT-mini is possible. Whichever installation method is
chosen it is important that the lock and strike plate are aligned correctly. The strike plate has an opening to accept
the bolt pin and centring this opening with the bolt pin will ensure correct operation.
The COBALT-mini can be installed vertically or horizontally but is not designed to be mounted in a floor
cavity firing upwards or in a wet environment.
When installing the COBALT-mini vertically, take note of which way the door is closing from. It the door is
approaching form the left the bolt pin is at the top, if the door is approaching from the right then the bolt pin is at the
bottom, as indicated below:
4.2 Electrical
The first consideration is to establish where to run the wires and decide on what feedback is required from the lock.
There are a total of seven available connections; three are compulsory power connections whilst the remaining four
provide optional door and bolt position feedback. These optional connections can be integrated into access control
or alarm systems to provide full monitoring.
The correct gauge of wire needs to be chosen as voltage drop across the power wires (+ and -) can limit the locks
operation. For all the remaining connections, a lower gauge wire can be used as these are only signal wires. The
following chart shows the maximum distance that the power supply can be away from the lock, assuming the power
supplies output 12VDC or 24VDC:
AWG
AREA (mm2)
MAXIMUM DISTANCE (m)
12VDC
24VDC
24
0.20
7
20
22
0.33
11
32
20
0.52
17
51
18
0.82
27
82
16
1.31
43
130
14
2.08
69
206
Door closing
from the right,
the lock is
installed with
the bolt pin at
the bottom.
Door closing
from the left,
the lock is
installed with
the bolt pin at
the top.
