INTERNIX PROFORT80 Modules: PF80-ATHD02

Technical Dossier

Product Details And Specifications

INTERNIX PROFORT80 Series: Comprehensive Module Range and Technical Overview

The INTERNIX PROFORT80 series represents a mature, field-proven programmable logic controller platform deployed across global heavy industry sectors including petrochemical refineries, nuclear power auxiliary systems, offshore oil & gas platforms, and continuous-process chemical plants. The PF80 backplane architecture supports high-density I/O expansion and deterministic scan-cycle execution, making it a reference platform for safety-instrumented and process-control applications where mean-time-between-failure (MTBF) requirements exceed 100,000 hours. Installed base concentrations are documented in East Asia, the Middle East, and legacy European process facilities commissioned between the mid-1990s and early 2010s.

The Evolution of PROFORT80 Architecture

The PROFORT80 platform was introduced as a successor to INTERNIX's earlier PF60 series, transitioning from parallel backplane communication to a proprietary high-speed serial bus (PFBUS-II) that reduced inter-module latency to sub-millisecond levels. Early PF80 revisions (Rev.A through Rev.C) used EPROM-based firmware storage; from Rev.D onward, flash-based firmware enabled field upgrades without module replacement. The PF80-ATHD02 analog output module belongs to the mid-generation hardware revision, featuring 16-bit DAC resolution and HART pass-through capability introduced in the Rev.C hardware spin.

Compatibility across generations is constrained by backplane slot addressing: PF80 Gen-1 chassis (PF80-CH08, PF80-CH16) are not electrically compatible with Gen-2 expansion racks (PF80-EX08, PF80-EX16) without the PF80-BPADP bus adapter. Engineers maintaining mixed-generation installations must verify chassis revision codes before substituting modules. The series entered the maintenance phase of its lifecycle circa 2018; INTERNIX ceased volume production of select I/O modules by 2022, making third-party MRO sourcing the primary procurement channel for ongoing plant maintenance.

PROFORT80 Full Catalog & Functionalities (SKU List)

The following catalog covers verified PROFORT80 series modules organized by functional category. Each entry reflects documented hardware specifications.

CPU & Controller Modules

• PF80-CPU01: Single-slot main CPU, 32-bit RISC, 256KB user program memory, PFBUS-II master.
• PF80-CPU02: Dual-redundant CPU module with hot-standby switchover, <10ms failover time.
• PF80-CPU03: Enhanced CPU, 1MB program memory, integrated Ethernet port, IEC 61131-3 compliant.

Analog Input (AI) Modules

• PF80-ATAI08: 8-channel analog input, 4–20mA / 0–10V selectable, 12-bit ADC.
• PF80-ATAI16: 16-channel analog input, 4–20mA, 14-bit ADC, HART Rev.5 pass-through.
• PF80-ATRTD04: 4-channel RTD input module, PT100/PT1000, 3-wire/4-wire configuration.
• PF80-ATTC08: 8-channel thermocouple input, Types J/K/T/E/R/S/B, cold-junction compensated.

Analog Output (AO) Modules

• PF80-ATHD02: 2-channel analog output, 4–20mA, 16-bit DAC, HART pass-through, loop-powered diagnostics.
• PF80-ATAO04: 4-channel analog output, 4–20mA / 0–10V, 12-bit DAC, short-circuit protected.
• PF80-ATAO08: 8-channel analog output, 4–20mA, 14-bit DAC, per-channel fault detection.

Digital Input (DI) Modules

• PF80-DTDI16: 16-channel digital input, 24VDC, sink/source configurable, 1ms filter.
• PF80-DTDI32: 32-channel digital input, 24VDC, high-density, optical isolation 500VAC.
• PF80-DTDI16AC: 16-channel digital input, 120/240VAC, zero-crossing detection.

Digital Output (DO) Modules

• PF80-DTDO16: 16-channel digital output, 24VDC, 0.5A per channel, short-circuit protection.
• PF80-DTDO08R: 8-channel relay output, Form-C contacts, 2A/250VAC, mechanical life 10M ops.

Communication & Network Adapters

• PF80-CAETH01: Ethernet/IP adapter, 10/100 Mbps, dual-port, DLR ring topology support.
• PF80-CAPB01: PROFIBUS-DP slave adapter, 12Mbps, GSD file configurable.
• PF80-CAMBA01: Modbus RTU/ASCII master/slave, RS-485, up to 247 nodes.

Power Supply Modules

• PF80-PS24V: 24VDC backplane power supply, 10A output, wide-range AC input 85–264VAC.
• PF80-PS24VR: Redundant 24VDC power supply module, hot-swap capable, active current sharing.

Sourcing Hard-to-Find & Obsolete PROFORT80 Parts

DriveKNMS maintains a dedicated MRO inventory program for the PROFORT80 series, targeting the gap created by INTERNIX's reduced production volumes post-2018. Stock is sourced through decommissioned plant buybacks, authorized distributor closeouts, and cross-border surplus channels. All units are cataloged by hardware revision code and firmware version to ensure compatibility matching before dispatch.

For end-of-life modules such as the PF80-CPU01 (Rev.A/B), PF80-ATAI08 (pre-HART variants), and first-generation PF80-PS24V, DriveKNMS provides revision-specific sourcing with documented traceability. Customers operating plants with 10–20 year maintenance horizons are advised to establish a standing spare-parts agreement to mitigate lead-time risk as secondary market availability contracts.

Quality Control for the PROFORT80 Range

PROFORT80 modules undergo a structured incoming inspection and functional test protocol at DriveKNMS facilities before dispatch. The PF80 backplane uses a proprietary PFBUS-II serial communication protocol; all modules are bench-tested in a live PF80-CH16 chassis under simulated process load to verify bus arbitration, slot addressing, and inter-module data integrity. Analog modules including the PF80-ATHD02 are calibrated against traceable reference standards: DAC linearity is verified across the full 4–20mA output range at 0%, 25%, 50%, 75%, and 100% span points. HART communication integrity is confirmed using a HART Field Communicator at 1200 baud. Digital I/O modules are tested for optical isolation breakdown voltage (>500VAC) and channel-to-channel crosstalk. Power supply modules are load-tested at 100% rated current for a minimum burn-in period before release.