Dc Power Supply; Backup Battery Pack; Figure 16. Connections For Dc 24 V Supply - Honeywell Touchpoint Plus Technical Handbook

MAN0984_Iss 2_06/15
Electrical Power And Interfacing

5.1.2 DC Power Supply

It is possible to power the Touchpoint Plus controller directly from a DC 18 – 32 V supply without using AC
supplies at all. However, batteries alone may quickly drop below the minimum DC 18 V requirement when
under load.
Note: The system must still be connected to protective earth (ground) when using an external DC supply.

5.1.3 Backup Battery Pack

The Touchpoint Plus can have an optional rechargeable 24 volt Lithium-Ion Battery Pack. This would normally
be charged by the SMPS, but can be charged by a separate DC 23.5 – 32 V supply.
Note: The backup battery requires minimum 24 V input to fully charge, and it has a non-replaceable 15 A
over-current protection fuse so do not exceed 32 V, 5 A charging input.
The battery should be charged at DC 24 – 32 V. The backup battery will not be fully charged and the backup time
Protective
Earth
(Ground)

Figure 16. Connections for DC 24 V Supply

In the event of Lithium batteries overheating:
DO NOT USE WATER as this can cause them to burn violently or they may explode.
will be reduced if the charging supply is <24 V.
System Ground Bus Bar
Danger
Important
24
Touchpoint Plus
Technical Handbook