Advanced Axis AX-I/O-48 Panduan Petunjuk Instalasi - Halaman 8
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3.2.2 Disable PSU (Power Supply Unit) Monitor
Each Switch LED Module requires 24 VDC filtered and regulated power at 60mA maximum current draw. The 24
VDC power can be obtained from either the AX-CTL base card (AUX-2, non resettable power output), if available,
or from an ANSI/UL Listed fire alarm power supply. If power is from an ANSI/UL Listed fire alarm power supply, the
Switch LED Module has the capability of monitoring a normally closed trouble contact of the Listed power supply,
thereby providing power supply status reporting at the Axis
If monitoring an ANSI/UL Listed fire alarm power supply, leave DIP switch 7 set to the "OFF" position and wire the
two PSU Monitor terminals to the normally closed trouble relay contact of the Listed power supply (see figure 6 and
7). If not monitoring an ANSI/UL Listed fire alarm power supply, set DIP switch 7 to the "ON", "Disable PSU
Monitor" position (see figure 6).
Note: Normally when the Switch LED Module is mounted to an aperture (opening/slot) location in an Axis
panel, power for the module is obtained from AUX 2 of the AX-CTL base card. If the power is originating
from AUX 2 of the base card, set DIP switch 7 to the "ON", "Disable PSU Monitor" position.
4 Module Wiring
ATTENTION
OBSERVE PRECAUTIONS
FOR HANDLING
ELECTROSTATIC
SENSITIVE DEVICES
The Switch LED Module must be grounded; this is normally achieved via the secured mounting of
the module to the installation cabinet aperture (opening/slot). Should another method of mounting
be utilized a dedicated ground must be provided.
Must be
Grounded
4.1 24 VDC Power Wiring
As previously indicated, each Switch LED Module requires 24 VDC filtered and regulated power. Wire 24 VDC
(60mA maximum) to terminals + and – of the switch LED module (see figure 8).
8
Figure 7 – Switch LED Module PSU Monitor Wiring
This equipment is constructed with static sensitive components. Observe anti-static
precautions at all times when handling printed circuit boards. Wear an anti-static ground
(earth) strap connected to the system enclosure ground.
AX
panel.
AX
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