Emerson ROC827 Installation, Electronic components, resulting in interrupted operations

ROC827 Instruction Manual

ƒAnalog Output (AO), Discrete Output (DO), and Discrete Output Relay (DOR) modules that provide the ability to manage various control devices.

ƒThe RTD Input and Thermocouple Input (T/C) modules that provide the ability to monitor various analog temperature field values.

ƒThe Highway Addressable Remote Transducer (HART) interface modules that enable the ROC827 to communicate with HART devices using the HART protocol as either Analog Inputs or Analog Outputs.

Each module rests in a module slot at the front of the ROC827 base unit or EXP housing. You can easily install or remove I/O modules from the module slots while the ROC827 is powered up (hot-swappable). Modules may be installed directly into unused module slots (hot-pluggable), and modules are self-identifying in the software. All modules have removable terminal blocks to make servicing easy. I/O modules can be added in any module slot.

The I/O modules acquire power from the backplane. Each module has an isolated DC/DC converter that provides logic, control, and field power as required. The ROC827 has eliminated the need for fuses on the I/O modules through the extensive use of current-limited short-circuit protection and over voltage circuitry. Isolation is provided from other modules and the backplane, power, and signal isolation. The I/O modules are self-resetting after a fault clears.

4.2Installation

Each I/O module installs in the ROC827 in the same manner. You can install any I/O module into any module socket, whether empty or in place of another 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 installing units in a hazardous area, make sure all installation components selected are labeled for use in such areas. Installation and maintenance must be performed only when the area is known to be non- hazardous. Installation in a hazardous area could result in personal injury or property damage.

You can insert or remove the I/O modules while power is connected to the ROC827. If the ROC827 is powered, exercise caution while performing the following steps to install a module.

Note: After you install a new I/O module or replace an existing I/O module, it may be necessary to reconfigure the ROC827. To change configuration parameters, use ROCLINK 800 software to make changes to the new module. Any added modules (new I/O points) start up with

Issued Mar-06 Input/Output Modules 4-3