La Marche A75R Installation And Operation Manual - page 6
2
Charger Overview
The A75R is simple and easy to use. It has an easy to read digital display for Output Voltage, and an analog
meter for the Output Current. All settings on the A75R are done via the front panel DIP switches, so there is no
need to navigate through confusing set up menus. A75R also includes a Charger Failure Alarm. This alarm
gives the customer LED indication as well as a single set of contacts for remote annunciation.
The image below shows all points of customer interaction with the A75R charger.
1. Input/Output Power
Connections - Section 1.2
1A. AC Input Phase 1
1B. Neutral (120 VAC)
Phase 2 (240 VAC)
1C. Ground
1D. Negative DC Output
1E. Positive DC Output
2. AC Fuse
3. DC Fuse
4. Output DC Current
5. Output DC Volts
6. Customer Connections (Signal)
6A. Alarm Relay Contacts - Section 1.3
6B. Remote Shutdown Input (12-24Vdc Bipolar) - Section 1.3
7. Status & Alarm Indicators - Section 3
8. Output Adjustments - Section 2.3
9. Charger Settings - Section 2.2
10. External Temperature Probe Connection – Section 2.2
11. Internal Temperature Probe Disable Switch
Figure 1 - A75R Railway Battery Charger