DI818
ABB
Overview
The DI818 is a Digital Input from ABB. It provides 32 channels and is built for signal interfacing within the ABB product portfolio systems.
Application & Technical Notes
As a digital input, the DI818 is intended for deployment in panel-based control cabinets and machine enclosures where the ABB product portfolio equipment is installed. It converts field signals (sensors, switches, transmitters) into the digital or analogue values the controller processes, forming the acquisition layer of the automation scheme.
Key published characteristics include 32 channels, current sinking signal handling, a range, "0" -30 .. +5 V rating. These values should be confirmed against the current manufacturer datasheet before final selection, as options and suffixes vary by configuration.
Maintenance & Diagnostics
Avoid condensation — the rated humidity is 5 to 95 %, non-condensing; store and operate the module in a dry, pollution-degree-appropriate enclosure. Verify field wiring, shielding and grounding at installation; check terminal torque and confirm signal types match the configured range. Periodically inspect for loose terminations, induced noise and channel-level diagnostics reported by the controller. Always de-energise the circuit and follow lock-out/tag-out before handling; refer to the official instruction bulletin for service procedures.
Sourcing & Procurement
When sourcing the DI818, distinguish three supply tiers: (1) genuine ABB stock from an authorised distributor; (2) compatible equivalents or surplus/NOS (new-old-stock) from third parties; (3) alternative parts offering equivalent function. Genuine supply carries the full warranty and traceability; compatible or alternative items may be cheaper but should be validated for form, fit, firmware and certification before use in a live system. PLCXpert publishes this page as an independent reference and does not sell the part — verify every claim with the manufacturer or your distributor.
Confirm the module matches your ABB product portfolio rack, the required channel count, signal type and voltage, and the firmware/configuration of the controller. Lead times and pricing vary by region and lifecycle status; obtain a current quote from an authorised channel rather than relying on stale listings.
Check live stock, lead time and request a quote for DI818 (opens in a new tab)
Frequently Asked Questions
What is the DI818?
The DI818 is a digital input from ABB. It is described by the manufacturer as: Digital Input.
What are the key technical ratings of the DI818?
Its published highlights include 32 channels, range, "0" -30 .. +5 V. Full electrical, mechanical and environmental limits are listed in the manufacturer datasheet and should be confirmed for your exact suffix.
How is the DI818 mounted or installed?
Installation follows the standard ABB product portfolio mounting practice for this device class; refer to the installation manual for exact dimensions and torque.
Is the DI818 compatible with my controller?
It belongs to ABB's automation product portfolio. Confirm the specific rack, firmware revision, slot rules and configuration with the controller documentation before purchase, as compatibility depends on the exact system build.
What should I check before buying the DI818?
Verify the genuine part number and suffix, confirm it matches your platform and ratings, check the current lifecycle/availability status, and buy from an authorised distributor. PLCXpert provides this reference only and does not sell the component.
Specifications
This module has 32 digital inputs. The input voltage range is 18 to 30 volt d.c. and the input current is 4.3mA at 24 V. The inputs are divided into two individually isolated groups with 16 channels and one voltage supervision input in each group. Every input channel consists of current limiting components, EMC protection components, input state indication LED and optical isolation barrier. The process voltage supervision input give channel error signals if the voltage disappears. The error signal can be read via the ModuleBus.
Dimensions
| Note | Width 45 mm (1.77”) Depth 102 mm (4.01”), 111 mm (4.37”) including connector Height 119 mm (4.7”) Weight 0.15 kg (0.33 lbs.) |
|---|
Reproduced from the manufacturer's published data. Values marked "Not available" are absent from the source document.