4.0OPERATION
4.1General
This chapter describes the control, adjustment and operational features of the Helios DC System 4000/48.
4.2Conventional Controller
The Conventional Controller monitors the operation of the entire power plant. It monitors all the alarms, and it controls and monitors the rectifiers.
Provision is made on the back of the Conventional Controller to extend any occurring alarm to the alarm center through the facilities provided in the powered equipment.
All of the control switches, potentiometers, operational and alarm visual indications are located at the front of the Conventional Controller.
4.2.1Front Panel
The front panel of the Conventional Controller is provided with the control, alarm and operational features shown in Figure 26 and described in the following subsections.
Figure 26 Front view of the Conventional Controller
Visual indicators
A 4.5 digit red LED readout to display the system current and voltage, and 18 LEDs to display the alarm conditions as described in Table 32. All alarm conditions are also displayed by a red incan- descent cabinet alarm lamp.
Table 32 Visual indicators
Designation | Description | Color |
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RECT FAN | Rectifier Fan Failure | yellow |
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EQL | Equalize On | yellow |
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FA | Fuse Failure Alarm (Internal to the Controller) | red |
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DFA | Discharge Fuse Alarm | red |
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CFA (not used) | Charge Fuse Alarm | red |
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RFA MIN | Rectifier Failure Alarm Minor | yellow |
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RFA MAJ | Rectifier Failure Alarm Major | red |
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ACO | Alarm | red |
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HVSD | High Voltage Shutdown Alarm | red |
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HV | High Voltage Alarm | red |
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LV | Low Voltage Alarm | red |
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HF | High Float Alarm | yellow |
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LF | Low Float Alarm | yellow |
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LVD | Low Voltage Disconnect | red |
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BOD | Battery On Discharge | red |
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LOP | Loss of Phase | red |
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AUX 1 (BDA) | Auxiliary Major | red |
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AUX 2 | Auxiliary Minor | yellow |
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28 Operation
