DeltaV™ DI 120 V AC Isolated Plus CHARM Eliminate marshalling and
add I/O anywhere in the plant
Specifications
| Detection Level for On | > 84 V AC |
| Detection Level for Off | < 34 V AC |
| Wetting Current | 10 mA at 120 V AC |
| Input Impedance | 12 kΩ (approximately) |
| Maximum Input Voltage | 130 V AC |
| Frequency | 50/60 Hz |
| Isolation | Each channel is optically isolated from the system at 250 V AC |
Configurable Channel Types | Discrete Input - Dry contact or discrete state sensor changing
<2 Hz, Pulse Count - Pulse train 0.1 Hz to 10 Hz |
| CHARM Power req. | 12 mA max @ 24 V DC |
| CHARM Heat Dissipation | 1.3 W |
| Field Circuit Protection | Recommend External Fuse at power source, Field wiring disconnect |
Features:
- Eliminate marshalling and add I/O anywhere in the plant without
affecting control room cabinets
- No marshalling cabinet or cross-wiring, fewer wires, much less work
and fewer contact points for potential failures
- No marshalling cabinet or cross-wiring, fewer wires, much less work
and fewer contact points for potential failures
Delivers Electronic Marshalling enabled by CHARacterization Modules
(CHARM) technology
Reduce system footprint
Eliminate I/O home run cables
Significantly reduce cabinet design engineering
Fully documented package
Introduction:
The DeltaV™ CTO CHARM Field Enclosures provide an offthe-shelf
solution for faster project execution and reduced installation
costs. Field Enclosures are factory tested products and ready for
installation in the field. Electronic Marshalling eliminates
traditional I/O design tasks and allows field wiring to start long
before control strategies are finalized.
The field enclosures are designed for hazardous areas and harsh
environments, from extreme temperatures to corrosive gases.
Benefits:
Delivers Electronic Marshalling enabled by CHARMs technology: The
CHARM Field Enclosures offer the full benefits of Electronic
Marshalling. The individual channels can be defined for any
combination of field signal type, as required by the process
equipment. This allows for 100 % utilization of channels,
regardless of the I/O signal mix. Late changes are easily
accommodated with minimal re-engineering and no rewiring.
Reduce system footprint: Equipment room footprint is greatly
reduced by replacing traditional marshalling cabinets with field
mounted I/O cards.
Eliminate I/O home run cables: Field instrumentation wiring is
reduced to the signal pair that connects the field device to the
Field Enclosure. Save on home run multi-core cables, cable trays,
associated engineering, and documentations.
Significantly reduce cabinet design engineering: The CHARM Field
Enclosures are pre-engineered and factory tested. The I/O
flexibility allows the same design to serve a wide variety of I/O
signals, conditioned individually by the CHARM. Field wiring design
is complete at the terminal block.
Fully documented package: Each Field Enclosure is supplied with
full documentation and engineering drawings showing internal
lay-out, bill of materials, and internal wiring. They are designed
to meet local building code and industry best practices in order to
deliver proven functionality with minimal costs.
