Emerson ROC827 instruction manual Issued Mar-06 Power Connections

ROC827 Instruction Manual

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 ROC827.

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 ROC827” in Chapter 6, Troubleshooting.

7.Re-apply power to the ROC827.

Note: Refer to Table 3-2 concerning LEDs.

Issued Mar-06 Power Connections 3-24