Argus RSM 48/10, Руководство пользователя

Страница: 25 / 38

Argus Technologies Ltd. 030-692-C0 Rev A WC
Printed in Canada. © 2006 Argus Technologies Ltd. ARGUS is a registered trademark of Argus Technologies Ltd. All Rights Reserved. Page 15 of 20
8.3.2 Power Module Adjustments
8.3.2.1 Output Voltage Adjustment
System output voltage should be measured at the shelf’s output terminals with an external
meter. If the supervisory module option is included, output voltage can be measured by
connecting the meter to the test jacks on the front of the supervisory module while the Test
switch is in the “Off” position. This monitors voltage at the output terminals of the shelf, which is
also the sensing point for the power modules.
Adjust output voltage via the V
ADJUST
control potentiometer. The output voltage level should not
be adjusted while the module is in Current Limit. The output voltage must be adjusted for all
modules in the rectifier system.
8.3.2.2 Output Voltage – Load Sharing Adjustment (with Temp Comp Off)
NOTE: The rectifier system is factory-calibrated for use with most valve regulated lead acid (VRLA) batteries.
1. Temperature Compensation should be “Off.”
2. Ensure sufficient load on the system (i.e., current draw should be a minimum of 2.5 to 3
amps per module).
3. Adjust the VADJUST potentiometer on each power module until the total system output
voltage — measured with an external meter at the battery or at the test jacks on the
supervisory module — is correct for 25°C (77°F) operation (as recommended by battery
manufacturer) and output current is evenly balanced between power modules.
8.3.2.3 Output Voltage – Load Sharing Adjustment (with Temp Comp On)
1. Temperature Compensation should be “On.”
2. Verify that the jumpers located on the supervisory PCB are corresponding to the correct
slope settings for the chosen battery.
3. Obtain the battery manufacturer’s recommended battery float voltage for 25°C (77°F)
operation.
4. While referring to Table C, identify the column that matches the Battery Float Voltage (BFV)
at 25°C (77°F) determined in previous step.
5. Identify the column corresponding to your system’s slope setting (i.e., 2.5mV, 3.5mV or
4.5mV).
6. Measure ambient battery temperature by attaching a thermometer to the battery terminal
posts.
7. Match the temperature with the slope setting and record the correct float voltage setting
listed in the table.
8. If system float voltage does not equal the correct level specified in the table, adjust to match.
9. Verify that each power module shares the system output current evenly.
10. Test the temperature compensation feature by heating and/or cooling the probes to simulate
temperature changes.
NOTE: If significant changes are made to the output voltage settings, the supervisory OVP and HVA settings may also
have to be adjusted (see sections 8.3.3.2 and 8.3.3.5).
8.3.2.4 Output Voltage Adjustment (Alternative)
If the load on the system is extremely low, it will be difficult to balance the load among the
power modules. In this case, perform the following:
1. Remove all power modules except for the power module to be adjusted.
2. Turn off temperature compensation.
3. Measure system output voltage at the supervisory test jacks (in the normal mode) using a
DVM.
4. Adjust the power module voltage to the exact value required as measured with the DVM.
5. Install the next power module to be adjusted.
6. Wait for power module to start up and remove module previously adjusted.
7. Repeat steps three through four with the power module requiring adjustment.
8. Complete steps five through seven with all remaining power modules.
9. Install all power modules into the system.
10. Turn on temperature compensation if required.