Redundant I/O Card Types
Redundant card types and terminations include:
• Analog Input (AI) 8 channel 4-20mA with Hart
• Analog Output (AO) 8 channel 4-20mA with Hart
• Discrete Input (DI) 8 channel 24VDC Dry Contact
• Discrete Output (DO) 8 channel 24VDC High-side
• Serial Interface card 2 ports
• FOUNDATION fieldbus H1 card 2 ports
Note: The Series 2 FOUNDATION fieldbus H1 card is not a drop-in replacement for the Series 1 in a Simplex environment. A Series 2 card has a different footprint and requires a new terminal block.
AI Terminal Block
Magnetic latching relays in the termination block permits the field device signal to switch between Analog Input redundant pairs. 2-wire and 4-wire devices can be connected to the same pair of cards.
Two jumper modules are available on the redundant terminal block, each module selecting for a group of four channels. The example below shows Channels 1 thru 4 and Channels 5 thru 8 set for 2-wire transmitters.
To set the jumpers for a group of 4 channels from 2-wire to 4-wire transmitters:
1. Remove the jumper module from the terminal block.
2. Rotate the jumper module 180° to the connected transmitter field type.
3. Place it back into the terminal block.
AO Terminal Block
Refer to Appendix C – Interface Specifications/I/O Cards of the Books On-line Installing Your DeltaV Automation System for additional information.
DI/DO Terminal Block
Refer to Appendix C – Interface Specifications/I/O Cards of the Books On-line Installing Your DeltaV Automation System for additional information.
Serial Interface Card
The Redundant Serial Interface terminal block provides two ports for the Serial Card.Port 1 is shown being used for redundant communications to the PLC.Note: A second port is available for an additional PLC connection. Refer to Books Online for additional information.
Fieldbus H1 Redundant Terminal Block – Series 2
Refer to Appendix C – Interface Specifications /I/O Cards of the Books On-line Installing Your DeltaV Automation System for additional information.
Enabling the Auto-Switchback Parameter
Enabling the Series 2 I/O Auto Switchback Parameter determines whether a card will automatically switch back if additional faults are detected after a switchover has occurred and previous failures are common to both cards.
Enabling the Auto-Switchback Parameter
Enable the Auto-switchback parameter by selecting ENABLE_AUTO_SWBK and clicking the right mouse button. Select the Properties option from the pop-up menu which appears.
Enabling the Auto-Switchback Parameter
The ENABLE_AUTO_SWBK Properties dialog box appears. Select either the False or True Value. Clicking the OK button sets the Auto-switchback parameter in the database.
Note: The default value is True. You must download the I/O card if the value was modified.
