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Connecting Low Voltage Inputs
ControlKeeper® TouchScreen Logic Board
Figure 1. 16 size Enclosure with CKT Mounted
Connecting Low Voltage Inputs
The ControlKeeper T logic board can support a total of
64 switch inputs. Of these 64 inputs, 32 of them may
be dry contact closure inputs that are connected to
the terminal blocks at the bottom of the ControlKeeper
Logic Board. Digital
switch inputs may also be used on
the ControlKeeper. If no contact input type switches are
being used, the full 64 switch inputs may consist of digital
switches. If a combination of contact input switches and
digital switches are being used, the combined total cannot
exceed 64 inputs.
The ControlKeeper T Logic Board can support a total of 4
analog inputs. The logic board contains 32 software analog
inputs to allow these four physical analog inputs to be
programmed at different switching thresholds to achieve the
multi threshold application from a single analog input.
Regardless of input type used, it is recommended that all
input wiring be done prior to applying power to the logic
board or at the very least with the terminal blocks removed
from the logic board. Please verify that there are no shorts
to AC ground prior to connection of input devices.
Regardless of input type, the following notes apply.
1. All low voltage wiring is Class 2 wiring.
2. All low voltage wiring must enter the cabinet into the
low voltage section of the enclosure. Low voltage
wiring can be brought into the enclosure from the
bottom or bottom left of the enclosure. If low voltage
wire must be brought into the cabinet from the top
section, there is a knockout reserved on the left side
which will allow conduit to be run from the top of the
enclosure into the low voltage wiring area. Failure to
separate high voltage from low voltage wiring may
cause interference with logic board function.
3. All low voltage wiring must be run in separate conduit
from line voltage wiring.
4. Test all low voltage wiring for shorts to AC ground
before connection to the ControlKeeper T panel.
5. When powering peripheral devices such as motion
sensors and photocells from the ControlKeeper T
panel, there may be a limitation on the number of
sensors that can be supported. This is also true if
lighted switches or digital switches are being used
with the system. Please contact Greengate for specific
information on device limitations if using these devices.
6. It is recommended that the terminal blocks be removed
from the board or power removed from the logic board
when doing initial switch input wiring.
Contact Input Switch Wiring
This section describes the wiring for dry contact closure
devices. There are 32 switch input wiring terminals on the
bottom of the ControlKeeper T to allow for wiring of the dry
contact closure devices.
1. Use 18 AWG twisted, unshielded wire for all low
voltage, dry contact closure device wiring.
2. Maximum length for dry contact closure device wiring
is 1000 feet.
3. Ensure that the local remote jumpers have been moved
to the local position (over pins 2 & 3) for both jumpers
(J9 & J10) to enable 24 VDC to the low voltage switch
channels. See Figure 2 below for location.
4. Please see wiring detail in Figure 2 for details on
connections of different devices to the ControlKeeper T
system.
Figure 2. ControlKeeper T Low-Voltage Switch Wiring
