GE Industrial Solutions Pulsar Plus Controller - Manual (Page 106)

Pulsar Plus Controller Family
Issue 7 December 2011 106
AMBER
Battery reconnected in reverse polarity X X RED RED
System started w/ reverse battery
polarity
X X RED RED
Alarm Inputs: The QS871A is referenced to VBus(-), therefore, all alarm inputs are either alarmed on an
open or a closure to VBus(-) as described below.
• One input closure to VBus(-) for Remote LVD Open (RO) from external source (J3 pins 1 and 2)
• One input to Fuse Input Major alarm upon closure to VBus(-), for distribution protector open alarms
(J1 pin 7)
• One input to Open String alarm upon closure to VBus(-) for battery circuit breaker open alarms (J1
pin8)
Reverse Battery Protection: The QS871A will prevent the closure of the battery contactor when it senses
batteries have been connected in reverse polarity. The QS871A will keep the contactor disconnected and
generate an appropriate alarm. When a battery disconnect breaker is used to take battery strings off-line for
servicing, care must be taken to ensure battery connections are correct at the disconnect switch.
Manual LVD Contactor Connect: This feature allows the Infinity NE or any other power system to resume
powering the load after low voltage disconnect of batteries. Fully depleted battery strings can be replaced
with fully charged strings. Once the strings have been installed, depressing the Manual LVD Contactor switch
on the front of the QS871A module will result in the LVBD contactor closing. Continue to depress the switch
until the Green LED stops flashing and displays a continuous green color. This indicates acceptance of the
command and permanent closure of the contactor. Releasing the switch prior to the continuous green LED
will result in the contactor opening and removing power to the load.
External Shunt Monitoring Input (J1 pins 4 and 5): The shunt must be in the VBus(-) leg to maintain proper
reference with the QS871A module. These inputs are for the system controller to read battery or load
currents. The polarity of the connections must be positive during battery discharge.
Contactor Management: Controls and monitors one load or battery non-latching contactor.
Autonomous Backup LVD Function: Monitor system bus voltage for backup LVD function (in case of loss of
communication to the QS871As or failed or removed controller ). The configured disconnect and reconnect
values assigned to a particular LVD function are sent from the controller to each respective QS871A. In the
advent of a controller failure the QS871As will utilize their individual voltage monitoring and these
thresholds to disconnect and reconnect the contactor.
7-Position ID Switch: Rotary 8-position switch that uniquely identifies up to seven remote distribution
monitor and control modules. ID position 0 is invalid. The controller can address up to eight unique
distribution monitor and control modules.
Note: The majority of applications that utilize the QS871 utilize the QS871A. There are versions of the QS871
that are used in special applications where components have been removed because the feature was not
required. These versions and the feature set are high-lighted below.