Product Details
The ABB DI831 3BSE013212R1, also cataloged as the DI831 Digital Input Module, operates as a dedicated hardware component for 48 VDC current sinking signal acquisition and sequence of events (SOE) timestamping within S800 I/O platforms. Featuring 16 groupwise isolated channels with input impedance rated at 9.6 k-ohms, the 0.22 kg module evaluates logical "0" between -60 V and +10 V and logical "1" between 30 V and 60 V. The unit draws up to 120 mA from the +5 V Modulebus and supports field cable distances up to 600 meters.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | DI831 (3BSE013212R1) |
| Base Model | DI831 |
| Brand | ABB |
| Origin | Sweden |
| Weight | 0.22 kg (0.48 lbs) |
| Dimensions | 45 mm x 119 mm x 102 mm (W x H x D) |
| Operating Temp | 0 deg C to +55 deg C |
| Power Consumption | 3.2 W typical power dissipation (120 mA max at +5 V Modulebus) |
| Number of Channels | 16 channels |
| Signal Type | 48 VDC current sinking |
| Input Voltage Range "0" | -60 V to +10 V |
| Input Voltage Range "1" | 30 V to 60 V |
| Input Impedance | 9.6 k-ohms |
| Event Recording Accuracy | -0.3 ms to +0.7 ms (0.4 ms resolution) |
| Dielectric Test Voltage | 500 VAC |
| Status Diagnostics | Front LEDs: Fault, Run, Warning, Channels 1-16 |
Backplane Bus Communication Velocity and Deterministic Networks
The 16-channel discrete module interfaces directly over the local Modulebus to maintain high communication velocity during deterministic scan cycles. Integrated sequence of events logic captures state transitions at 0.4 ms resolution, sending time-stamped status frames across the backplane bus to ensure accurate event ordering in centralized alarm buffers. Controller firmware flash compatibility allows configurable digital filter times from 0 to 100 ms to be loaded online without interrupting execution on parallel I/O channels.
Frequently Asked Questions
Q: What sequence of events (SOE) resolution and accuracy does the DI831 module provide?
A: The module records field event transitions with a resolution of 0.4 ms and an overall timestamping accuracy ranging from -0.3 ms to +0.7 ms.
Q: How is galvanic isolation structured across the 16 digital input channels?
A: Channels are groupwise isolated from ground with a rated insulation voltage of 50 V and tested to a dielectric withstand voltage of 500 VAC.
Field Installation Guidelines
- Snap the module onto the corresponding S800 Module Termination Unit (MTU) until the mechanical locking tabs engage.
- Ensure all 48 VDC field wiring runs remain within the maximum cable length limit of 600 meters.
- Connect shielded field wiring directly to the MTU grounding bar to minimize high-frequency electromagnetic noise.
- Verify proper bus clock synchronization across the rack to prevent "Time synchronization missing" diagnostic faults.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
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