APC AP9930 Datasheet download pdf (Page 6)

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USER’S GUIDE

battery management system

Install a current sensor

If you add a second battery string to a system that had only one string, you

need to install a second current sensor. The system needs one sensor per

string to measure the current throughout the string.

1. Set the DIP switches on the new current sensor to identify its location

correctly.

2. Plug the ambient temperature sensor into the unused port on the

current sensor to be located at the warmest area of the enclosure.

Connect the two current sensors to each other with the supplied cable.

3. Use the remaining cable to connect the sensor string to the sensor port

at the back of the Battery Management System. Unless at least one

current sensor is connected to the sensor port, neither current sensor

will be able to report information. If a current or temperature sensor is

not functioning, always check this connection first.

4. Calibrate the new current sensor.

5. Install the current sensor in the new string, ensuring that the current

sensor is oriented correctly with a load carrying conductor passing

through it.

ee a

See the Installation and Quick-Start Manual for detailed

instructions on calibrating the current sensors.

ee a

For detailed instructions on how to install temperature and

current sensors and to set the DIP switches correctly, see the

Installation and Quick-Start Manual.

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APC AP9930 Datasheet Page 6