Submittal Sheet

7800 SERIES S7800A2142 KEYBOARD DISPLAY MODULE
5 32-00110—05
WIRING
WARNING
Electrical Shock Hazard.
Can cause severe injury or death.
To prevent electrical shock and equipment damage, disconnect the power supply from the main disconnect before
beginning installation. More than one disconnect can be involved.
1. Refer to Fig. 3 for proper wiring.
2. Make sure all wiring complies with all applicable electrical codes, ordinances and regulations.
3. For recommended wire size and type, see Table 1.
4. For Recommended grounding practices, see Table 2.
5. For KDM: The KDM is powered from a low voltage, energy-limited source. It can be mounted outside of a control
panel if it is protected from mechanical damage.
NOTE: A 13 Vdc power supply must be used any time more than one KDM is used. A maximum of two KDM, Data Con-
trolBus™ Modules or S7810B Multi-Drop Switch Modules are allowed in any combination.
Table 1. Recommended Wire Size and Part Number.
Table 2. Recommended Grounding Practices.
6. Recommended wire routing:
a. ControlBus:
(1) Do not route the ControlBus cable in conduits that carry line voltage circuits.
(2) Avoid routing the ControlBus cable close to ignition transformer leadwires.
(3) Route the ControlBus cable outside of conduit if properly supported and protected from damage.
b. Remote Reset:
(1) Do not run high voltage ignition transformer wires in the same conduit with the Remote Reset wiring.
(2) Do not route Remote Reset wires in conduit with line voltage circuits.
7. Maximum wire lengths:
a. KDM: The maximum length interconnecting wire is 4000 ft (1219m).
b. Remote Reset leadwires: The maximum length wire is 1000 ft (300m) to a Remote Reset push-button.
8. Install all electrical connectors.
9. Restore power to the panel.
Application Recommended Wire Size Recommended Part Number
Keyboard Display Module 22 AWG two-wire twisted pair with
ground, or five-wire.
Belden 8723 shielded cable or
equivalent.
Data ControlBus™ Module 22 AWG two-wire twisted pair with
ground, or five-wire.
Belden 8723 shielded cable or
equivalent.
Remote Reset Module 22 AWG two-wire twisted pair,
insulated for low voltage.
—
Communications Interface ControlBus
Module™
22 AWG two-wire twisted pair with
ground.
Belden 8723 shielded cable or
equivalent.
13 Vdc full wave rectified transformer
power input.
18 AWG wire, insulated for voltages
and temperatures for given
applications.
TTW60C, THW75C, THHN90C
Ground Type Recommended Practice
Signal ground (KDM, Data ControlBus™
Module, Communications Interface
ControlBus Module™).
Use the shield of the signal wire to ground the device to the signal ground
terminals [3(c)] of each device. Connect the shield at both ends of the daisy
chain to ground.