Owner's manual

Galaxy Pulsar Edge Power System Controller
Issue 3 October 2011 126
8 QS871A Remote Distribution
Monitor and Control Module
Overview
Although the Pulsar Edge has the ability to directly control and manage a single LVD contactor
without additional hardware. It can manage additional LVDs and distributions through the use of
remote distribution monitor and control modules like the QS871. The QS871A (CC109103371)
allows the Pulsar Edge controller to obtain distribution data and manage a non-latching contactor
through serial communications over the RS485 bus. The system controller monitors alarms for
open load or battery protectors, measures load or battery shunts, monitors the bus voltage, and
controls and monitors a single load or battery LVD contactor. Figure 8-1 shows the connections
and interfaces for the QS871A.
Figure 8-1: QS871A Remote Distribution Module
Features
The QS871A module has the following features:
• Status LED: This is a tri-colored LED and will illuminate accordingly for the conditions
shown below.
LEDs ( = On)
Green Amber Red Condition
Normal
Minor Alarm
Major Alarm
Flashing Communication Loss with Controller
Flash (5s) Manual Reconnect Command Accepting