Overview
The ABB DI571 1TNE968902R2103, also cataloged as the DI571 Digital Input Module, operates as a dedicated hardware component for 24 VDC discrete signal acquisition within AC500 distributed I/O systems. The module receives field-level digital status signals and transfers input state data through the system backplane for controller processing and deterministic I/O communication.
Suffix Breakdown & Model Matrix
The supplied documentation identifies a single catalog number:
| Model Variant | Description |
|---|---|
| DI571 / 1TNE968902R2103 | Digital Input Module |
No official suffix matrix or ordering-option breakdown is specified in the available product documentation.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | DI571 |
| Brand | ABB |
| Origin | Switzerland |
| Product Series | Advant AC500 |
| Product Type | Digital Input Module |
| Input Channels | 16 digital inputs |
| Input Voltage | 24 VDC |
| Signal Type | Discrete digital input |
| Input Current | Refer to manufacturer documentation |
| Isolation | Channel group isolation |
| Mounting Method | DIN rail mounting |
| Communication Interface | AC500 backplane bus |
| Protection Rating | IP20 |
| Weight | Not explicitly specified in the referenced documentation |
| Dimensions | Not explicitly specified in the referenced documentation |
| Operating Temp | Not explicitly specified in the referenced documentation |
| Power Consumption | Not explicitly specified in the referenced documentation |
Backplane Bus Communication Architecture
The DI571 exchanges process data through the AC500 I/O backplane communication system. Input state information is transferred cyclically between the module and controller CPU without requiring a separate field communication interface. The module participates in deterministic I/O scanning and supports integration with distributed AC500 control architectures through the native system bus infrastructure.
Frequently Asked Questions
Q: Does the DI571 support hot-swapping during controller operation?
A: Hot-swap capability must follow the specific AC500 station configuration and controller documentation. Module insertion or removal should only be performed according to ABB maintenance procedures.
Q: How are field input signals connected to the module?
A: Field devices are wired directly to the digital input terminals using the designated terminal unit and wiring arrangement specified for the AC500 I/O platform.
Q: Does the module communicate directly over Ethernet networks?
A: No. The DI571 functions as an I/O module and exchanges process data through the AC500 backplane communication system. Network communication is handled by the associated controller and communication modules.
Field Installation Guidelines
- Verify module type and catalog number before installation.
- De-energize field wiring where required by plant safety procedures.
- Mount the module securely on the designated DIN rail assembly.
- Separate low-level signal wiring from motor power and high-current conductors.
- Maintain proper shield grounding practices according to site electrical standards.
- Confirm terminal polarity before energizing 24 VDC input circuits.
- Inspect terminal tightness and conductor routing during commissioning.
- Verify input status indications and controller diagnostics after startup.
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