The DeltaV system supports the following types of H1 cards:
Fieldbus is an all digital, serial, bi-directional communication protocol that interconnects devices such as actuators, sensors, discrete devices, and controllers in the field. It is a Local Area Network (LAN) for instruments that enables basic control and I/O to be moved to the field device. Refer to the manual Fieldbus Installations in a DeltaV TMDistributed Control System for more information.
Installation Notes
- The Fieldbus H1 terminal block is recommended to provide screw terminations for field wiring for the H1 card.
- The Series 2 H1 terminal block is recommended to provide screw terminations for field wiring for the Series 2 H1 card in Simplex mode.
- The Redundant H1 terminal block is recommended to provide screw terminations for field wiring for the Series 2 H1 card in Redundant mode.
- The "System Power Guidelines" section provides information on extending power to a fieldbus segment.
Specifications
| Item | Specification |
|---|---|
| Number of Ports | Two |
| Port Type | Foundation Fieldbus H1 - 31.25 Kbit/second |
| Isolation | Each port is isolated from the system and from each other and factory tested to 1500 VDC. |
| LocalBus current (12VDC nominal), per card | 400 mA typical, 600 mA maximum |
| Field circuit power, per card | None |
| Fieldbus power (for Series 2 card) | 9 to 32 VDC, 12 mA per port |
| Mounting | Assigned slot of I/O carrier |
