Woodward 9905-972 6-Ch Analog Output 4–20 mA

Woodward 9905-972 6-Ch Analog Output 4–20 mA 

Module Description 

The LINKnet 6 Channel Analog Output (AO) Module provides six 4-20 mA analog outputs. The output current is monitored by the module processor through an A/D converter. The read back value and status are available through the application program. The 4-20 mA output module has a watchdog that monitors the communications from the module processor to the D/A converter, and disables the current drivers upon a loss of communications of more than 1.2 seconds.

 Module Specification

• Number of Outputs: 6
• Current output range: 0–25 mA
• Power Supply Input: 18 to 32 Vdc
• Power Required: 6.0 Watts at 24 Vdc 

Installation

Install the LINKnet 6CH Analog Output Module on the DIN rail and connect to the appropriate LINKnet network and 24 Vdc power. Wire the analog outputs per Figure 11-19. Set module address one’s and ten’s rotary switches per application setup.

The LINKnet system accommodates hot-replacement of faulty nodes. When replacing a node, the network cable connections must remain intact. A faulty node can be removed from the network by pulling both terminal blocks out of their headers, and removing the node from the DIN rail. The address switches of the replacement node should be set to match those of the faulty node. The replacement node can then be mounted on to the DIN rail, and the terminal blocks pushed into the headers. It is then necessary to reset the node through the application program to reinitiate communications with the LINKnet controller module and to clear the "no message" fault. 

Technical Specifications