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 17 of 20
8.3.3.2
Over Voltage Protection (OVP)
WARNING: The OVP must be set >2V higher than the float voltage setting (48V systems).
1. Enter the Test mode by turning on the Test switch.
2. With the system powered up, rotate the OVP potentiometer on the supervisory module
clockwise to its maximum setting.
3. Attach a DVM to the voltage test jacks and monitor the test supply voltage. Adjust the Test
potentiometer to the desired OVP trip level.
4. Turn the OVP potentiometer counterclockwise until the OVP LED illuminates. Turn the Test
potentiometer counterclockwise until the alarm clears. Return the unit from Test mode to the
Normal mode by turning the Test switch off.
5. To confirm the new OVP setting, place the unit in the Test mode. Attach a DVM and increase
the Test supply voltage potentiometer and monitor the point at which the alarm trips. Reduce
the test supply voltage and monitor the point at which the alarm clears.
6. If setting is correct, return the unit to Normal mode.
NOTE:
OVP RESET – to reset the power module after an OVP shutdown, pull it out 2” from connector and allow it to
discharge for 30 seconds or until all LEDs have extinguished. Reinsert the module when ready.
CAUTION: FALSE OVP LED POTENTIAL WHEN ADJUSTING TEMPERATURE COMPENSATION
Changes in ambient temperature can cause the supervisory module to generate a “false” OVP
LED when the operator is making temperature compensation adjustments. This is because
changes in the OVP levels occur faster than in the system’s output voltage. This situation can
occur under the following conditions:
A) When Temp Comp is SWITCHED ON and ambient temperature is >25°C: In this situation,
the power modules will disregard the OVP LED and continue to decrease output voltage to the
new level, thereby extinguishing the OVP LED automatically.
B) When Temp Comp is TURNED OFF and ambient temperature is <25°C: The power modules
will disregard the OVP LED and continue to decrease the output voltage to the default setting at
25°C (77°F), thereby extinguishing the OVP LED automatically.
8.3.3.3
Low Voltage Alarm (LVA)
1. Enter the Test mode by turning on the Test switch.
2. With the system powered up, rotate the LVA potentiometer on the supervisory module
completely counterclockwise to its minimum setting.
3. Attach a DVM to the voltage test jacks and monitor the test supply voltage. Adjust the Test
potentiometer to the desired LVA trip level. Turn the LVA potentiometer clockwise until the
LVA LED illuminates. Turn the Test potentiometer clockwise until the alarm clears. Return
the unit from Test mode to the Normal mode by turning the Test switch off.
4. To confirm the new LVA setting, place the unit in Test mode. Attach a DVM and decrease the
Test potentiometer and monitor the point at which the alarm trips. Next, increase the test
supply voltage and monitor the point at which the alarm clears.
5. If setting is correct, return the unit to Normal mode.
8.3.3.4
Low Voltage Disconnect (LVD)
1. Enter the Test mode by turning on the Test switch.
CAUTION: WHEN IN TEST MODE, AN LVD CONDITION WILL ONLY LIGHT THE LAMP – THE
SYSTEM DISCONNECT RELAY WILL NOT BE ACTIVATED.
2. With the system powered up, rotate the LVD potentiometer on the supervisory module
completely counterclockwise to its minimum setting.
3. Attach a DVM to the voltage test jacks and monitor the test supply voltage. Adjust the Test
potentiometer to the desired LVD trip level.
4. Turn the LVD potentiometer clockwise until the LVD LED illuminates (this indicates LVD is
“out.”). Next, turn the Test potentiometer clockwise until the alarm clears (this indicates LVD
is “in.”). Return the unit from Test mode to the Normal mode by turning the Test switch off.
5. To confirm the new LVD setting, place the unit in Test mode. Attach a DVM and decrease
the Test potentiometer and monitor the point at which the LVD LED illuminates (LVD Out).
Next, increase the test supply voltage and monitor the point at which the alarm clears (LVD
In).
6. If setting is correct, return the unit to Normal mode.
NOTE:
The LVD Out setting is adjustable, however the LVD In setting is fixed.
Summary of Contents for RSM 48/10
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