27V Smpsu Module; Battery Standby; Telephone Connection - Tynetec Advent xt Installation Manual

3. CONTROLLER INSTALLATION

27V SMPSU MODULE

The controller includes a 27V/150W (5.6A) switched mode power supply unit with solid state overload protection. With the
mains supply ON the green output healthy LED should be illuminated. The output voltage is factory set to 27.5V DC (with
the batteries disconnected) using a DVM across V+/V‐.

BATTERY STANDBY

In the event of a mains failure, two 12V 5Ah rechargeable batteries will maintain a typical
system for approx. 8 hours. A protection circuit will disconnect the battery supply in the
event of prolonged mains failure to prevent damage to the batteries. The mains supply
must be applied first to energise the protection circuit, i.e. the system will not function
by simply connecting the batteries alone.

TELEPHONE CONNECTION

Two BT master sockets (not supplied) are required to connect the external telephone line and the local DECT base
stations/fixed CLI telephones to the controller.
PSTN
LINE
DECT
The PSTN line should be terminated in a master socket by the telephone company. Connect a 2 pair CW1308 spec cable
from the second master socket (terminals 2, 3 & 5) to the DECT base station, Matrix IP PBX or fixed telephone sockets on
the scheme. Note a maximum of 4 devices can be connected to the Advent xt.
Doc No. FM0410 issue M‐1 Page 7
27V/150W SMPSU
TERMINATION
BOARD
BATTERY BATTERY
SMPSU
MODULE
(W00581)

27V OUTPUT HEALTHY LED
2 x MASTER
BT SOCKETS
BT LEADS
SUPPLIED
MAINS LIVE
MAINS NEUTRAL
MAINS EARTH
0V
0V
27.5VDC
27.5VDC
27V ADJUST
BT LINE
IN
TO DECT
BASE
STATIONS