Campbell CR800 Dokumentacja Pobierz pdf (Strona 56)

Section 1. Installation and Maintenance

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1.3.2 PS100 Lead Acid Power Supply

The PS100 power supply includes a 12 V, 7.0 amp-hour lead acid battery, an

AC transformer (18 V), and a temperature compensated charging circuit with a

charge indicating diode. An AC transformer or solar panel should be

connected to the PS100 at all times. The charging source powers the CR800

while float charging the lead acid batteries. The internal lead acid battery

powers the datalogger if the charging source is interrupted. The PS100

specifications are given in Table 1.3-2.

The two leads from the charging source can be inserted into either of the CHG

ports, polarity doesn't matter. A transzorb provides transient protection to the

charging circuit. A sustained input voltage in excess of 40 V will cause the

transzorb to limit voltage.

The red light (LED) on the PS100 is on when a charging source is connected to

the PS100 CHG ports. The switch turns power on and off to the 12 V ports,

battery charging still occurs when the switch is off.

Switch the power to "off" before disconnecting or

connecting the power leads to the Wiring Panel. The

Wiring Panel and PS100 are at power ground. If 12 V is

shorted to either of these, excessive current will be drawn

until the thermal fuse opens.

FIGURE 1.3-2. PS100

CAUTION

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Campbell CR800 Dokumentacja Strona 56