ARE Series Chargers
RS-759, Rev. 11
5-3
5.5
HIGH AND LOW VOLTAGE ALARM
This is a dual channel alarm, which monitors the DC output voltage. One form C relay contact for remote
indication is available from each channel. For the low voltage alarm, the relay is normally energized and
deenergized to indicate a low voltage. For the high voltage alarm, the relay is normally deenergized and
energized to indicate high voltage. Both channels operate similarly, thus the alarm may also be used to indicate
two low voltage or two high voltage levels. Each form C contact is rated to handle two amperes at 28 volts DC or
120 volts AC. A local alarm light may also be provided for each channel.
5.5.1
Connections
The low voltage form C contact is terminated at terminal strip TS4-4, 5, 6. The common (6) and normally closed
(4) contact is closed during an alarm condition. The high voltage form C contact is terminated at TS4-1, 2, 3.
The common (3) and normally open (2) contact is closed during an alarm condition.
5.5.2
Adjustment
a.
High Voltage Alarm
The high voltage alarm level is set by Potentiometer P/H. Turning P/H clockwise increases the setting.
To check the setting, place the power supply in equalize and slowly increase the output voltage until the alarm
is activated, while monitoring the output voltage.
To set the alarm, turn P/H fully clockwise. Place the power supply in equalize and adjust the output voltage at
the desired alarm level. Turn P/H counterclockwise until the alarm is activated. Check the setting using the
procedure described above.
b.
Low Voltage Alarm
The low voltage alarm is set by Potentiometer P/L. Turning P/L clockwise increases the setting.
To check the setting, reduce the DC bus voltage by decreasing the float voltage or by partially discharging the
battery, and monitor the bus voltage until the alarm is activated.
To set the alarm, turn P/L fully counterclockwise. Reduce the bus voltage to the desired alarm level. Turn P/L
clockwise until the alarm is activated. Check the setting using the procedure described above.
High and Low Voltage Alarm (Dual Channel)
Specifications:
Adjustment Range
Contact Rating
Operating Temperature Range
Temperature Coefficient
Differential – Pickup to Dropout
Current Drain with Low Voltage
Factory Settings: Low Voltage
High Voltage
± 20% of 2.2 volts per cell
2 Amperes at 28 VDC or 120 VAC
0 C to 65 C
+ 0.44% per C
1%
5 – 12 mA
2.08 volts per cell
2.41 volts per cell
SCHEMATIC:
Содержание ARE Series
Страница 27: ...ARE Series Chargers RS 759 Rev 11 4 8 FIGURE 4 3 MBC 3420B CABINET ASSEMBLY 24 CABINET 208 240 480 VOLT INPUT...
Страница 39: ...ARE Series Chargers RS 759 Rev 11 4 20 FIGURE 4 11 CONNECTION DIAGRAM FOR ARE 24 INCH CABINET 208 240 480 VAC...
Страница 40: ...ARE Series Chargers RS 759 Rev 11 4 21 FIGURE 4 12 CONNECTION DIAGRAM FOR ARE 30 INCH CABINET 120 208 240 VAC...
Страница 41: ...ARE Series Chargers RS 759 Rev 11 4 22 FIGURE 4 13 CONNECTION DIAGRAM FOR ARE 30 INCH CABINET 208 240 480 VAC...
Страница 42: ...ARE Series Chargers RS 759 Rev 11 4 23 FIGURE 4 14 CONNECTION DIAGRAM 36 INCH CABINET 120 208 240 VAC...
Страница 43: ...ARE Series Chargers RS 759 Rev 11 4 24 FIGURE 4 15 CONNECTION DIAGRAM FOR ARE 36 INCH CABINET 208 240 480 VAC...
Страница 45: ...ARE Series Chargers RS 759 Rev 11 4 26 FIGURE 4 17 SCHEMATIC DIAGRAM FOR ARE 24 INCH CABINET 208 240 480 VAC...
Страница 46: ...ARE Series Chargers RS 759 Rev 11 4 27 FIGURE 4 18 SCHEMATIC DIAGRAM FOR ARE 30 INCH CABINET 120 208 240VAC...
Страница 47: ...ARE Series Chargers RS 759 Rev 11 4 28 FIGURE 4 19 SCHEMATIC DIAGRAM FOR ARE 30 INCH CABINET 208 240 480VAC...
Страница 48: ...ARE Series Chargers RS 759 Rev 11 4 29 FIGURE 4 20 SCHEMATIC DIAGRAM FOR ARE 36 INCH CABINET 120 208 240 VAC...
Страница 49: ...ARE Series Chargers RS 759 Rev 11 4 30 FIGURE 4 21 SCHEMATIC DIAGRAM FOR ARE 36 INCH CABINET 208 240 480 VAC...
Страница 51: ...ARE Series Chargers RS 759 Rev 11 4 32 FIGURE 4 22 SCHEMATIC DIAGRAM FOR ARE CONTROL BOARD...
Страница 68: ...ARE Series Chargers RS 759 Rev 11 5 15 FIGURE 5 14 BLOCKING DIODE ASSEMBLY...
