SIRON 19H01088 Relay Modules

Technical Dossier

Product Details And Specifications

SIRON 19H01088 Series: Comprehensive Module Range and Technical Overview

The SIRON 19H01088 series is a family of relay output modules engineered for deployment in safety-critical and continuous-process industrial environments. These modules are found in distributed control system (DCS) architectures across chemical processing plants, petroleum refineries, nuclear power generation facilities, and heavy manufacturing installations worldwide. The 19H01088 series interfaces directly with SIRON's backplane bus infrastructure, providing galvanically isolated relay contact outputs for actuator control, interlock logic, and field device switching. Their robust construction — rated for extended temperature ranges and high-vibration environments — has made them a standard component in long-lifecycle plant automation projects where replacement availability is a primary procurement concern.

The Evolution of 19H01088 Architecture

The 19H01088 series was introduced as part of SIRON's modular I/O platform targeting mid-to-large scale DCS installations. Early revisions of the series used electromechanical relay technology with standard DIN rail mounting and parallel wiring termination. As plant automation requirements evolved, subsequent hardware revisions introduced enhanced contact ratings, improved EMC shielding, and revised firmware compatibility for integration with SIRON's supervisory control layers. The Y-suffix variants (e.g., Y449, Y450) denote specific hardware revision levels that affect backplane connector pinouts and firmware handshake protocols — a critical distinction when sourcing replacement modules for existing installations. Mixing incompatible Y-revisions within the same rack can result in bus communication faults. Facilities operating legacy SIRON DCS platforms must verify the exact Y-revision before procurement. As the broader 19H01088 series has entered its mature/end-of-life phase, long-term maintenance support and certified refurbished stock have become the primary sourcing channels for plant operators committed to extending system lifecycles beyond OEM support windows.

19H01088 Full Catalog & Functionalities (SKU List)

The following SKUs represent the documented range of the SIRON 19H01088 relay module series, classified by functional type. Each entry reflects a distinct hardware configuration within the series:

Relay Output Modules

• 19H01088-0350 Y449: 8-channel relay output module, 24 VDC coil, SPDT contacts, Y449 hardware revision
• 19H01088-0350 Y450: 8-channel relay output module, revised contact rating, Y450 backplane revision
• 19H01088-0351 Y449: 16-channel relay output, extended I/O density, standard DIN backplane mount
• 19H01088-0351 Y450: 16-channel relay output, Y450 revision, updated EMC filtering
• 19H01088-0352 Y449: Relay output module with integrated status LED per channel, Y449 revision
• 19H01088-0352 Y450: LED-status relay output, Y450 revision, enhanced diagnostics register
• 19H01088-0353 Y449: High-current relay output module, 10A contact rating, Y449 revision
• 19H01088-0353 Y450: High-current relay output, Y450 revision, revised terminal block torque spec

Digital Input Modules

• 19H01088-0200 Y449: 16-channel 24 VDC digital input module, sink/source configurable
• 19H01088-0200 Y450: 16-channel DI, Y450 revision, updated input filter timing
• 19H01088-0201 Y449: 32-channel digital input, high-density I/O, Y449 backplane
• 19H01088-0201 Y450: 32-channel DI, Y450 revision, revised bus arbitration firmware

Digital Output Modules

• 19H01088-0300 Y449: 16-channel 24 VDC transistor output, source type, Y449 revision
• 19H01088-0300 Y450: 16-channel DO transistor, Y450 revision, short-circuit protection update
• 19H01088-0301 Y449: 32-channel transistor output, high-density DO, Y449 backplane revision
• 19H01088-0301 Y450: 32-channel DO, Y450 revision, updated overcurrent threshold

Communication & CPU Modules

• 19H01088-0100 Y449: Backplane communication adapter, PROFIBUS-DP interface, Y449 revision
• 19H01088-0101 Y449: CPU module, local bus master, coordinates I/O scan cycle for 19H01088 rack

Sourcing Hard-to-Find & Obsolete 19H01088 Parts

The SIRON 19H01088 series has entered its mature lifecycle phase, with OEM new-production availability increasingly constrained. DriveKNMS maintains a dedicated inventory of tested, certified-refurbished, and new-surplus 19H01088 modules to support plant operators requiring lifecycle extension beyond standard OEM support. Our sourcing network covers both common production variants and low-volume Y-revision-specific configurations that are no longer available through standard distribution channels. All sourced units are cross-referenced against the original SIRON hardware revision documentation to ensure backplane and firmware compatibility before shipment. For facilities managing multi-year maintenance contracts on SIRON DCS platforms, DriveKNMS offers reserved stock agreements and priority allocation for critical relay output modules including the 19H01088-0350 Y449 and adjacent variants.

Quality Control for the 19H01088 Range

The 19H01088 series presents specific quality verification challenges due to its backplane bus communication architecture and relay contact wear characteristics. DriveKNMS applies a structured test protocol to all 19H01088 units prior to dispatch. Each relay output channel is cycled under rated load to verify contact integrity and coil actuation response time. Backplane connector pins are inspected under magnification for fretting corrosion — a common failure mode in modules removed from high-vibration environments. Bus communication registers are read and verified against the module's documented firmware revision to confirm Y-suffix hardware compatibility. Insulation resistance testing is performed between relay contacts and coil circuits to validate galvanic isolation integrity. Modules that do not pass all test stages are quarantined and not offered for sale. Test records are retained and available upon request for quality-audited procurement processes.

For sourcing inquiries on SIRON 19H01088-0350 Y449 or any module in the 19H01088 series:

• Email: [email protected]
• WhatsApp: +86 18359293191
• Web: driveknms.com