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ROC800-Series Instruction Manual

Revised Jul-14

Power Connections

3-25

Table 3-22. Power Consumption of Other Devices

Other Device

Power Consumption (mW)

Quantity

Used

Duty

Cycle

Sub-Total

(mW)

Description

P

TYPICAL

Total

Although

Table 3-5

and

Tables 3-6

through

3-20

take into account the

power the ROC800 supplies to its connected devices, be sure to add the

power consumption (in mW) of any other devices (such as radios or

solenoids) used with the ROC800 in the same power system, but which

are not accounted for in

Tables 3-6

through

3-18

.

Enter that Total value in the Other Devices line of

Table 3-5

.

3.3 Removing a Power Input Module

To remove the Power Input module:

Caution

Failure to exercise proper electrostatic discharge precautions, such as

wearing a grounded wrist strap may reset the processor or damage

electronic components, resulting in interrupted operations.

When working on units located in a hazardous area (where explosive

gases may be present), make sure the area is in a non-hazardous state

before performing procedures. Performing these procedures in a

hazardous area could result in personal injury or property damage.

1.

Perform the backup procedure described in

Preserving

Configuration and Log Data

in

Chapter 6, Troubleshooting

.

2.

Remove the wire channel cover.

3.

Remove power from the ROC800.

4.

Unscrew the two captive screws on the front of the Power Input

module.

5.

Remove the Power Input module.

Note

:

If you intend to store the ROC800 for an extended period, also

remove the internal backup battery located on the CPU module

(see

Figure 3-9

or

Figure 3-10

).