Digital Input 24V 16 ch | D1801 3BSE020508R1 | ABB

Technical Specifications

The DI801 is a 16 channel 24 V digital input module for the S800 I/O. This module has 16 digital inputs. The input voltage range is 18 to 30 volt d.c. and the input current is 6 mA at 24 V. The inputs are in one isolated group with sixteen channels and channel number sixteen can be used for voltage supervision input in the group. Every input channel consists of current limiting components, EMC protection components, input state indication LED and optical isolation barrier.

Troubleshooting & Comissioning Checklist

Vibration Fastening: If deployed in heavy-vibration environments, verify that an M4 binder screw (12–14 mm) is tightened directly beneath the yellow release button.
Duct Clearance: Ensure at least 100 mm of clearance exists above the module to allow screwdriver access to the top guide channel.
Terminal Wiring: Inspect the detachable process connectors to ensure 24 V DC field wiring matches sinking input configuration.
Grounding: Verify the DIN rail or wall-mounting plate is correctly bonded to the functional earth (FE) busbar.

Field Engineering Considerations

Channel and Group Isolation: All 16 channels share one common isolated group from the system ground. Groupwise isolation protects the core backplane, but a ground fault within the loop affects the entire group.
Voltage Supervision: Channel 16 can be designated for process voltage supervision. Utilize this to monitor external field power status and report errors back to the controller via ModuleBus.
Input Impedance: The module exhibits a 3.5 kΩ input impedance and draws roughly 6 mA per channel at 24V. Factor this load into the auxiliary 24V DC power supply budget calculations.

Technical FAQ

Q: What are the diagnostic indicators on the hardware?
A:Every individual input channel features a dedicated front-panel LED that displays its current logic state. A persistent fault light or flickering light typically points to external field wiring issues or load supply inconsistencies.

Q: Does this module support Sequence of Events (SOE) or Redundancy?
A:No, the DI801 does not support Sequence of Events (SOE) time-stamping, module redundancy, or intrinsic safety (Ex) barriers. It is a standard-integrity digital input module.

Q: Can I adjust the input response time to filter out electrical noise?
A:Yes, the module supports selectable digital filter times of 2, 4, 8, and 16 ms. Signals or noise pulses shorter than the configured filter window are automatically ignored.

Q: Do you supply brand-new, original parts or second-hand refurbished items?

A: Our stock consists of Original New items; all products undergo quality inspection to ensure they are fully functional.

Q: What guarantees are included with the shipment?
A: All items in stock are tested by engineers, packed in professional ESD packaging, and shipped via express logistics with a global delivery time of 24–48 hours.

Q: How long does global shipping take?
A: Stock items are typically dispatched within 24 hours. Shipments are sent via DHL or FedEx Express, taking approximately 3–5 days to reach Asia, 4–6 days to Europe and the Middle East, and usually arriving within a week in major industrial regions worldwide.

Q: If the model I need is not listed on the website, can I request a quote?
A: Yes. We hold over 200,000 SKUs of industrial spare parts in stock, and many long-tail models are not listed in full. You can send us an RFQ (Request for Quote) directly, and we will provide wholesale pricing promptly.

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