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

 

 

 

RECT FAN

Rectifier Fan Failure

yellow

 

 

 

EQL

Equalize On

yellow

 

 

 

FA

Fuse Failure Alarm (Internal to the Controller)

red

 

 

 

DFA

Discharge Fuse Alarm

red

 

 

 

CFA (not used)

Charge Fuse Alarm

red

 

 

 

RFA MIN

Rectifier Failure Alarm Minor

yellow

 

 

 

RFA MAJ

Rectifier Failure Alarm Major

red

 

 

 

ACO

Alarm cut-off

red

 

 

 

HVSD

High Voltage Shutdown Alarm

red

 

 

 

HV

High Voltage Alarm

red

 

 

 

LV

Low Voltage Alarm

red

 

 

 

HF

High Float Alarm

yellow

 

 

 

LF

Low Float Alarm

yellow

 

 

 

LVD

Low Voltage Disconnect

red

 

 

 

BOD

Battery On Discharge

red

 

 

 

LOP

Loss of Phase

red

 

 

 

AUX 1 (BDA)

Auxiliary Major

red

 

 

 

AUX 2

Auxiliary Minor

yellow

 

 

 

28 Operation

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Image 34
Liebert 6000 A, 3000, 4000, 1500 user manual General, Front Panel, Visual indicators, Designation Description Color

1500, 6000 A, 4000, 3000 specifications

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