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A removable configuration memory card which contains the specific setup for each unit is located on the
Display Board. The system will not operate if this card is not present. The memory card is used to
transfer configurations and settings during a field replacement of the Display board. This card should
never be removed or replaced while power is applied to the system. See 8.4. Display PCB Replacement
7.2.2. Alarm Relay Board
The system contains a relay alarm board containing 8 alarm contacts to allow remote monitoring of up
to an additional 6 alarms. Common and Loss of Communication form-C relay contacts are provided on
each Charger.
7.3. System Options
7.3.1. Battery Voltage & Current Monitoring
As an option, Battery voltage and current monitoring can be provided. This option will provide separate
Battery input terminals to monitor the charge and discharge of the battery.
7.3.2. Battery Input / Breaker
A Battery breaker can also be provided to eliminate an external distribution panel and disconnect the
battery. This configuration allows the DC loads to be worked on while maintaining charge to the battery.
The system with all available options is shown below:
Fuse
7.4. System Features
7.4.1. Input Power Walking (Soft Start)
The Charger incorporates input power walking capability to gradually accept the load upon being
energized to prevent power surges.
7.4.2. Reverse Polarity Protection
The system incorporates a reverse polarity diode and an output fuse in the positive leg for reverse
polarity protection. In case the battery is connected in reverse, the diode will conduct and blow the
output fuse to prevent damage to the batteries.
CB2
+
DC Output
-
+
Battery input
-
Figure 25: Battery Input Options
Ascend Single Phase Charger Operation Manual
Fuse
35
CB2
+
DC Output
-
CB3
+
Battery input
-
95-100167 Rev A
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