Emerson Removing and Installing Module Covers, Mounting the ROC827 on a DIN Rail, Strap

ROC827 Instruction Manual

2.3.3 Removing and Installing Module Covers

Before you insert an I/O or communications module, remove the module cover over the empty module slots in which you intend to install the modules. Although you are not required to remove the power to the ROC827 to perform this procedure, caution is always advisable when working with a powered ROC827.

Caution	To avoid circuit damage when working inside the unit, use appropriate
	electrostatic discharge precautions (such as wearing a grounded wrist
	strap).

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.

To remove a module cover:

1.Remove the wire channel cover.

2.Unscrew the two captive screws on the face of the cover.

3.Using the tab at the left side of the removable terminal block, pull the module cover straight out from the ROC827 housing.

Note: If you remove a module for an extended period, install a module cover plate over the empty module slot to keep dust and other matter from getting into the ROC827.

To install a module cover:

1.Place the module cover over the module slot.

2.Screw the two captive screws on the module cover plate.

3.Replace the wire channel cover.

2.4Mounting the ROC827 on a DIN Rail

When choosing an installation site, be sure to check all clearances. Provide adequate clearance for wiring and service. The ROC827 mounts on Type 35 DIN rails and requires two strips of DIN rail. Refer to Figures 2-1, 2-2, and 2-3.

Note: English measurement units (inches) appear in brackets in the following figures.

Issued Mar-06 Installation and Use 2-7