Emerson 1C31113G02 Input Module

Configured for analog signal acquisition in Ovation DCS networks, the Emerson 1C31113G02 (1C31113G02 Analog Input Module) provides direct physical/electrical execution. This 8-channel, 14-bit resolution module digitizes incoming 4-20 mA field loops for processing by the central system controller.

Hardware Specifications

DCS Interface & Channel-to-Channel Isolation

Designed for high-accuracy process monitoring within Ovation I/O bases, the module combines a 14-bit analog-to-digital converter across 8 independent input channels. Galvanic channel-to-channel isolation prevents field loop voltage spikes and differential ground currents from propagating to adjacent channels or backplane control buses. Active signal conditioning supports 4-20 mA HART loop protocol instruments, while onboard cold junction compensation (CJC) maintains conversion stability during cabinet ambient temperature variations.

Frequently Asked Questions

Q: Can individual input channels on the 1C31113G02 module be configured for loop-powered sensors?

A: Yes, channels accept standard 4-20 mA current loops powered either internally through the subrack supply or externally via field transmitters.

Q: How does the 14-bit analog-to-digital converter affect measurement resolution?

A: The 14-bit conversion divides the 4-20 mA input span into fine discrete steps, allowing precise tracking of process variables by the Ovation controller.

Field Installation Guidelines

1. De-energize subrack slot power and field loop power before mounting or removing the module.
2. Put on an ESD grounding wrist strap attached to the metal enclosure frame during module handling.
3. Inspect backplane connectors and guide rails for dust, contamination, or damaged pins prior to installation.
4. Align card edges with slot tracks and slide the card into the slot until the edge connector locks into the backplane.
5. Tighten top and bottom retaining screws to secure chassis frame ground bonding.
6. Connect all field signal shield drain wires to a single-point earth ground stud on the rack assembly to prevent ground noise.

Backplane Bus Communication Velocity & Firmware Compatibility

The bus extender card propagates high-speed parallel bus cycles between master control racks and remote I/O expansion racks without introducing signficant propagation delay. System integrity depends on deterministic backplane bus communication velocity and physical trace impedance matching across the edge connector interface. Hardware revision level G01 ensures full firmware flash compatibility and timing sync across distributed I/O racks without disrupting backplane cycle clocking.

Frequently Asked Questions

Q: Can the 7379A84G01 bus extender card be inserted or removed while the system backplane is energized?

A: No, live insertion or removal (hot-swapping) is prohibited; power to the rack chassis must be isolated prior to insertion or extraction to prevent edge connector arc damage and bus clock corruption.

Q: What primary function does the QBE G01 designation indicate on this printed circuit board?

A: The QBE G01 designation specifies the Quick Bus Extender hardware revision, governing trace routing impedance and connector mechanical pinout compatibility for specific system bus backplanes.

Field Installation Guidelines

• Power Isolation: Turn off main AC/DC power to the local rack and target expansion chassis before seating or unseating the bus extender card.
• ESD Precaution: Ground installation personnel using a wrist strap connected to cabinet earth ground prior to handling the circuit board assembly.
• Edge Connector Alignment: Align the card edges with the chassis card guides and apply uniform pressure until the backplane edge connector is fully seated.
• Fastener Engagement: Secure all card retaining screws or lock levers to guarantee ground continuity and prevent mechanical vibration displacement during operation.