Background Image
Table of Contents Table of Contents
Previous Page  82 / 182 Next Page
Information
Show Menu
Previous Page 82 / 182 Next Page
Page Background

ROC800-Series Instruction Manual

3-30

Power Connections

Revised Jul-14

Battery Reserve

Battery reserve is the amount of time that the batteries can provide

power without discharging below 20% of their total output capacity.

The battery reserve should be a minimum of five days, with ten days

of reserve preferred. Add 24 hours of reserve capacity to allow for

overnight discharge. Space limitations, cost, and output are all factors

that determine the actual amount of battery capacity available.

To determine the system capacity requirements, multiply the system

current load on the batteries by the amount of reserve time required, as

shown in the following equation:

System Requirement = Current Load in Amps * Reserve Hours = _____ Amp Hours

Caution

When using batteries, apply in-line fusing to avoid damaging the

ROC800.

To make battery connections:

1.

Perform the backup procedure described in

Preserving

Configuration and Log Data

in

Chapter 6, Troubleshooting

.

2.

Remove the BAT+ and BAT– terminal block connector from the

socket.

3.

Install a fuse at the input power source.

4.

Insert each bared wire end into the clamp beneath the BAT+ and

BAT– termination screws (refer to

Figure 3-5

).

5.

Screw each wire into the terminal block.

6.

Review

Restarting the ROC800

in

Chapter 6, Troubleshooting

.

7.

Re-apply power to the ROC800.

Note

:

Refer to

Table 3-2

concerning LEDs.

3.5.3 Replacing the Internal Battery

The internal Sanyo 3 volt CR2430 lithium backup battery located on the

CPU provides backup of the data and the Real-Time Clock when the

main power is not connected. The battery has a one-year minimum

backup life while the battery is installed and no power is applied to the

ROC800. The battery has a ten-year backup life while the backup

battery is installed and power is applied to ROC800 or when the battery

is removed from the ROC800.

Recommended replacement lithium/manganese dioxide batteries

include:

Table 3-23. Replacement Battery Types

Part

Battery, Lithium, 3V

Size

24 mm (0.94 in) diameter x 3 mm (0.12 in) height