Stand-By Battery; Battery Start-Up; On-Board Power Supply Unit - Honeywell Galaxy 3-48C Installation Manual

Galaxy 3 Series Installation Manual

Stand-by Battery

The Galaxy 3 Series control panels can accommodate up to 2 x 17 Ahr batteries. Ensure that the battery
connector leads on the control panel Powers Supply Unit (PSU) are connected to the correct terminals on the
battery.
CAUTION: There is a risk of explosion if the battery is replaced by an incorrect type.
Dispose of used batteries according to the instructions.

Battery Start-up

The system can be powered up via the Battery Start-up jumper if there is no AC power. To do this, short
out the Battery Start-up jumper for the duration of the configuration process only. Never leave the Battery
Start-up connected or else deep discharge of the Stand-by Battery will occur.

On-Board Power Supply Unit

The on-board Power Supply Unit (PSU) supplies and monitors power to the system and peripherals. The
following table shows the fuse name and value in amps.
G3-144/G3-520: The Galaxy 3 Series control panel contains four fuses. Details are given in the table below.
NOTE: The G3-48 does not require fuse AUX2.
FUSE NAME
AUX1
AUX2
BATT
BELL
Power Monitoring Characteristics:
G3-48
The PSU total capacity is 1.5A. Internally the PSU
is split in two in order to ensure sufficient current is
always available for stand-by battery recharge.
The PSU capacity is broken down as follows:
• Battery:
• Control PCB:
• AUX +12V:
The PSU is available for zones/outputs and peripherals.
C o n r t l o P
B - A T
+ B A T
Table 2-3. Battery/Control Panel connections
VALUE (AMPS)
1.0 RS485 Line 1, RIO 0, Zones 1-8: +12V,
on-board comms
1.0 RS485 Line 2, RIO 1, zones 1-8 +12V
1.6 Battery
1.0 Outputs RIO 0 1-4, RIO 1 1-4, Horn output 20 mm, anti-surge
Table 2-4. On-board PSU Fuses
Low battery level: 11.2V
Deep discharge protection: 10.5V
Overvoltage protection: 14.7V
0.75A
0.25A
0.5A
Stand-by Battery
a n l e B t a e t y r
- e v t r e m n i l a
+ e v t r e m n i l a
MONITORS
G3-144/520
The PSU total capacity is 2.5A. Internally the PSU is
split in two in order to ensure sufficient current is al-
ways available for stand-by battery recharge.
The PSU capacity is broken down as follows:
• Battery:
• Control PCB:
• AUX +12V:
2-9
TYPE
20 mm, anti-surge
20 mm, anti-surge
20 mm, anti-surge
1.25A
0.25A
1.00A