PT-100 Manual

Operation

4.0 Operation

This section explains how the controller operates, and also provides information on the LED

indicators and the digital display that are used to show the operational status of the PT controller.

Figure 4-1, Front Panel Display and LED Indicators

3-Character

Display with

LED Indicators

Charge Status

LED Indicators

AUX Relay

LED Indicator

PT Fault

LED Indicator

SELECT

Pushbutton

RESET

Pushbutton

4.1 PT Front Panel Features

The front panel is used to monitor and control the performance of the PT controller. As shown in

Figure 4-1, it is comprised of the following features:

• Display with LED Indicators – A 3-character display with four relevant LED (green) indicators

provide the controller’s operational information. The following screens are displayed in sequence:

• PV ARRAY VOLTS (and LED) • PV ARRAY KW (and LED) • BATTERY BANK VOLTS (and LED)

• BATTERY BANK AMPS (and LED) • Power Status Code

• Charge Status LED Indicators – The at-a-glance LEDs identify the charging stage the controller

is in [BULK (blue), ABSORB (yellow), FLOAT (green), or EQUALIZE (all 3 charge LEDs on)].

• Fault LED Indicator – The FAULT LED (red) illuminates

to indicate

when a fault condition

exists. When the FAULT LED comes on, the display also shows the F## fault code which is used to

determine the fault condition. For details about the fault codes, see Section 5.3, Troubleshooting

Based on Fault Codes.

• Aux (Auxiliary) Relay LED Indicator – The AUX LED (yellow) illuminates when the auxiliary

relay is energized.

• SELECT Pushbutton – This pushbutton allows the display to stop or resume automatic

scrolling, to quickly advance thru the operational screens while the display is auto-scrolling,

or to allow you to manually scroll thru the screens when the display is not auto-scrolling. This

pushbutton can also enable an equalization charge when pressed with the RESET pushbutton.

• RESET Pushbutton – This pushbutton allows you to clear a fault, and to enable an equalization

charge when pressed with the SELECT pushbutton.

Note 1: The Power Status Code shows each time when manually scrolling through the screens.

It also shows when the display is auto-scrolling and the output power is being limited. For details

about power codes, see Section 4.2.3, Power Status Codes.