Lucent Technologies -48V CPS4000/CPS4000 PLUS Cabinet Power System
Issue 13 December 2000 Installation and Testing 5 - 27
Initial Start-up and Test, continued
Adjust Plant
Voltage
Adjust Plant Voltage
Step Action
1
If provided, remove the thermal probe cables from J10-J13 on
the connector board while adjusting the plant voltage.
2
Set the plant voltage using the V Adj encoder located on the
control unit. If batteries are connected to the system, the plant
voltage must be adjusted to the voltage recommended by the
battery vendor. For Lucent Technologies IR or VR batteries,
the plant voltage should be 54.5 volts for battery ambient
temperatures below 25° Celsius (77° Fahrenheit).
Note: It may take a few moments for the plant voltage to
change if batteries are discharged. See specific battery
product manuals for additional information.
3
Reinstall the thermal probes, if provided, to J10-J13 on the
connector board. If the temperature sensed by any probe is
above the nominal temperature setting (25°C for CPS4000 or
CPS4000 PLUS using NAFTA temperature compensation or
20°C for CPS4000 PLUS using EURO temperature
compensation), the TEMP COMP LED will activate and the
plant voltage will decrease to the appropriate level as defined
by the Standard/NAFTA or EURO algorithm for the
temperature sense. This is not an alarm condition, but is only
an indication that TEMP COMP is actively adjusting the plant
float voltage from that which was originally set. Refer to
Figures 7-2 and 7-3 for additional information regarding the
TEMP COMP feature.
Note: Do not readjust plant voltage on the MCU/ACU
with the TEMP COMP LED active or the plant voltage
will increase above the initial voltage setting when the
temperature decreases.
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