Written by:.JBJ
Checked by: AC
Document Number: Premier MX Inst Rev: 2
Page 14 of 44
14/12/06
a)
Switching regulator is malfunctioning
b)
The power supply output voltage has been incorrectly set to a value less than
the terminal voltage of the batteries
4)
A yellow
‘Mains Fault’
LED. This denotes that the mains voltage has failed or is
less than the required minimum for correct operation of the power supply.
Note: Fault indications do not become active for a minimum of 10 seconds after the
fault has occurred.
11.2
Battery Disconnect
1)
The supply provides a battery disconnect facility which disconnects the batteries
when the battery terminal voltage falls below 19.5V.
11.3
32 zone Premier MX Power Supply Features And Connections
Figure 12 shows the layout of the 32 zone Premier MX panel power supply.
Figure 12 – 32 zone Premier MX power supply layout
Secondary AC
Supply from
transformer
28V, 0V DC
Power output
Mains
Fault
Output
Common
Fault
Output
4-way header for
connector to 32 zone
motherboard for DC
power, common fault
and mains
fault
LED indicators for:
Mains fault, Internal Fault,
Battery/Charge Fault, Output O.K
.
DC supply
output voltage
adjustment
potentiometer
[factory
set].
Battery
Thermistor
connections
Battery
connections
FS1 Battery
fuse [6.3 A]
