Optional Expansion Unit Connection (Available Late 2015); Figure 17. Connecting The Touchpoint Plus And Optional Expansion Unit To A Mains Supply - Honeywell Touchpoint Plus Technical Handbook

MAN0984_Iss 2_06/15
Electrical Power And Interfacing

5.2.4 Optional Expansion Unit Connection (available late 2015)

In general, the expansion unit should have the same cabling and similar power requirements as the
Controller:
•
2-core cable plus Earth
•
Shielded signal cables
•
<10 metres from the controller
•
avoid Earth (Ground) loops
The SMPS can deliver 150 W maximum, however a basic unit and an expansion unit each need 105 W so
must be wired as shown below when using AC Mains input.
Touchpoint Plus Controller
AC Line
AC Common
F-Ground
+24 VDC
+24 VDC
Note: The SMPS is attached to chassis ground and does not need a separate ground connection.

Figure 17. Connecting the Touchpoint Plus and Optional Expansion Unit to a Mains Supply

-Ve DC
-Ve DC
Ground Bus Bar
Optional Expansion Unit
AC Line
AC Common
26
Touchpoint Plus
Technical Handbook
F-Ground
-Ve DC
-Ve DC
+24 VDC
+24 VDC
Ground Bus Bar