3-24
95-8533
18.2
MOUNTING
Mount the power supply monitor in a Nationally
Recognized Test Laboratory (NRTL) labeled
enclosure. Refer to the “Specifications” section
for mounting dimensions.
WIRING
CAUTION
The power supply should be properly
connected to an earth ground! A ground
wire MUST be connected to the power
supply units’s case ground!
NOTE
The Power Supply Monitor uses two
of the four DIP switches to select an
appropriate fault level for the installation.
See Figure 3-18. The unit will fault when
the batteries source a current level
higher than the threshold for 20 seconds.
The fault will clear when the current
drops to half the level for 20 seconds. The
current level selection is based on the
minimum current draw of the attached
equipment. The selected value must be
less than the actual minimum current
draw for the system.
1. Verify that the input source is the same
voltage and frequency as that marked on
the nameplate of the power supply.
2. Verify that transformer taps are set for the
correct a.c. input. (Input tap setting is located
inside the power supply enclosure.)
3. Verify that the supply power wire size and
fusing are adequate for the current indicated
on the power supply nameplate.
NOTE
Consult the power supply manufacturer’s
instruction manual provided with the
support documentation received with the
Eagle Quantum System.
NOTE
Required Overload Current is usually
equal to 15% of the nominal rating.
4. Connect external wiring to the appropriate
points on Power Supply. Refer to Figure 3-18
for terminal block locations and Figures
3-19 and 3-20 for terminal identification.
Connect the 24 Vdc power wires and the
LON network cable to the appropriate points
on J1. (Redundant “+,” “–,” and shield
terminals are connected internally.) Do not
ground any shield at the monitor / power
distribution cabinet. Insulate the shields to
prevent shorting to the device housing or to
any other conductor.
5. Connect a two wire cable between the AC
input of the power supply and terminals 1
and 4 on J3, the AC input terminal block
on the power supply monitor. See Figure
3-20.
6. Connect the “B” terminal on the power
supply monitor to the negative (–) side of
the backup battery. Connect a correctly
sized circuit breaker in the battery circuit
as shown in Figure 3-21. The circuit breaker
must be rated between 130% and 250% of
the total load.
7. Connect the “C” terminal on the power
supply monitor to the negative (–) side of
the power supply.
8. Wire the power distribution circuit breakers
to the output of the power supply. Circuit
breaker ratings must be between 130% and
250% of the full load rating.
9. Set the device network address for the
power supply monitor.
NOTE
For additional information, refer to the
power supply manufacturer’s instruction
manual provided with the support
documentation received with the Eagle
Quantum Premier system.
STARTUP
Turn on the power supply and allow the voltage
to stabilize at 27 volts before closing the circuit
to the battery.
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