Pa Amplifier & Smpsu Installation; Installation; Mains Supply; Termination - Tynetec Advent xt Installation Manual

8. PA AMPLIFIER & SMPSU INSTALLATION
12V BATTERY

INSTALLATION

The PA amplifier & SMPSU is housed in a single steel enclosure 200x500x100 mm (HxWxD) designed for wall mounting
below the Advent xt controller.

MAINS SUPPLY

The 240V AC mains supply should be taken from the same fused spur as the Advent xt controller. Fit the nylon strain relief
to the socket to prevent the mains lead being inadvertently unplugged.

TERMINATION

3 cables are provided for connection to the Advent xt termination board ‐ see table below for connections and colour
codes. See Drg No. ZXT100 sheet 2, for larger systems with intercoms split over 2 legs see Drg No. WD0276.
Terminal
PA Amplifier EN
PA Amplifier AUD
PA Amplifier 0V
RS485+
RS485‐
Transformer PA1
Transformer PA2
Note: the transformer PA1/PA2 connection is not polarity conscious.
SMPSU & DC-DC MODULES
The 15V/100W switch mode power supply unit (P/No. W00585) is factory set to 13.75V DC output to supply the two 24V
DC‐DC converters and the PA amplifier board. This voltage also charges the 12V standby battery. The SMPSU has an
internal 20mm 3.15A mains fuse and solid state overload protection on the output. For details on changing the mains fuse
see "27V SMPSU Module" on Page 7.
The two 24V/50W DC‐DC converter modules (P/No. W00590) are factory wired to provide +/‐ 24V DC supply for the PA
amplifier board. The DC‐DC converters have solid state overload protection and contain no user serviceable parts.
PROGRAMMING
The All Call and Fire Tone options must be enabled in the "General Setup" programming ‐ see the Advent xt Programming
Manual (Tynetec Doc No. FM0411).
Doc No. FM0410 issue M‐1 Page 14
+24V/50W D C -D C C O N VERTER
AU D IO O U T
PA1 PA2
100V LIN E AU D IO
TRAN SFO RM ER
Colour Cable
Red
Blue 3 Core
Green
Red
2 Core
Black
Red
2 Core
Black
The optional PA amplifier & SMPSU (P/No. ZXT155) allows the
onsite manager to broadcast public address announcements
through all intercoms simultaneously.
Note; PA intercoms (P/No. ZXT206) must be fitted in all
dwellings. One PA amplifier & SMPSU can drive approx. 80
intercoms, for larger systems a second ZXT155 will be required
and the site PA wiring must be split into two legs.
-24V/50W D C -D C C O N VERTER
VR1 FIRE
T O N E VO L
VR2
EN AU D IO VO L
AU D
0V
P A AM P LIFIE R
BO ARD
IS S U E "E " O N WARD
15V/100W SWITC H M O D E PSU
Connected To:
Advent xt Termination Board EN
Advent xt Termination Board AUD
Advent xt Termination Board 0V
Advent xt Termination Board RS485+
Advent xt Termination Board RS485‐
Advent xt Termination Board PA1
Advent xt Termination Board PA2
240V AC
M AIN S