Emerson ROC827 Removing a Power Input Module, Power Consumption of Other Devices, Total

ROC827 Instruction Manual

Table 3-16. Power Consumption of Other Devices

Power Consumption (mW)		Quantity	Duty	Sub-Total
Other Device		Used	Cycle	(mW)
Description	PTYPICAL

Total

Although Tables 3-5 and Tables 3-6 through 3-15 take into account the power the ROC827 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 ROC827 in the same power system, but which are not accounted for in Tables 3-6 through 3-15.

Enter that Total value in the Other Devices line of Table 3-5.

3.3Removing 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 power from the ROC827.

3.Remove the wire channel cover.

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 ROC827 for an extended period, also remove the internal backup battery.

Issued Mar-06 Power Connections 3-20