ABB DSTD 108P – Connection Unit Module | Advant OCS / Master DCS Platform
Engineering Background
The DSTD 108P is a field-proven connection unit module developed by ABB for use within the Advant OCS (Open Control System) and Master distributed control system (DCS) architecture. Designed to serve as a structured termination and signal-routing interface, it bridges field wiring to the controller backplane with high reliability in continuous-process environments.
Product Positioning
Targeted at process automation engineers managing brownfield DCS upgrades, spare-parts procurement, and system maintenance, the DSTD 108P provides a direct, OEM-equivalent replacement path for aging Advant OCS installations in refinery, power generation, pulp & paper, and chemical plant applications.
Complete Technical Specifications
| Part Number | DSTD 108P |
| Manufacturer | ABB (ASEA Brown Boveri) |
| Module Type | Connection Unit Module |
| Platform Compatibility | ABB Advant OCS / Master DCS |
| Function | Field wiring termination and signal routing interface |
| Mounting | DIN rail / subrack panel mount (per Advant OCS mechanical standard) |
| Operating Temperature | 0 °C to +55 °C (storage: −40 °C to +70 °C) |
| Relative Humidity | 5 % to 95 % non-condensing |
| Power Supply | Supplied via backplane bus (no external PSU required) |
| Approvals / Standards | CE marked; designed to IEC 61131-2 environmental class |
| Weight (approx.) | 100 g |
| Country of Origin | Sweden |
| SKU | DSTD108P |
Proven Application Environments
- Oil & gas refinery DCS control loops (Advant OCS Master M90/M80 systems)
- Power plant boiler and turbine control cabinets
- Pulp & paper process automation panels
- Chemical and petrochemical batch control systems
- Water treatment and utility SCADA integration racks
- Brownfield DCS maintenance and spare-parts replenishment programs
Engineering Advantages
- OEM-equivalent form factor — direct plug-in replacement; no re-engineering of cabinet wiring required
- Structured termination design — reduces field wiring errors and simplifies commissioning documentation
- Backplane-powered — eliminates auxiliary PSU wiring, reducing cabinet footprint and failure points
- Wide thermal tolerance — qualified for harsh industrial environments without additional cooling
- Long-lifecycle platform support — ABB Advant OCS modules remain in active use across global process industries; sourcing DSTD 108P extends system life without full DCS migration
System Architecture & Signal Flow
Within the Advant OCS architecture, the DSTD 108P occupies the connection unit layer between field instrument cables and the I/O processor modules. Field signals enter via screw-terminal or plug-in connectors on the DSTD 108P, are conditioned and routed through the subrack backplane, and are then processed by the associated I/O or communication module. This modular topology allows individual connection units to be replaced during live maintenance windows with minimal process disruption, provided correct isolation procedures are followed per ABB site safety standards.
Sourcing & Quality Verification
- Units sourced from decommissioned OEM installations, certified MRO distributors, and authorized ABB channel partners
- Each module inspected for physical integrity: connector condition, PCB cleanliness, label legibility, and firmware/hardware revision marking
- Functional bench-test available on request prior to shipment for critical spares orders
- Original ABB part markings and revision codes preserved and documented in shipment records
- Packaging: anti-static bag + foam-lined carton; ESD-safe handling throughout
Procurement Process
- Submit RFQ — contact support@konmask.com with quantity, required delivery date, and destination port
- Receive quotation — pricing, lead time, and stock confirmation returned within 1 business day
- Order confirmation — purchase order or proforma invoice issued; payment terms confirmed
- Quality inspection & packing — module inspected, photographed, and packed to IEC transport standards
- Shipment & tracking — DHL / FedEx / sea freight options; AWB or BL provided same day as dispatch
- After-sales support — 30-day DOA warranty; technical assistance available for installation queries
Technical FAQ
Q: Is the DSTD 108P compatible with both Advant OCS and Advant Controller 400 series?
A: The DSTD 108P is designed for the Advant OCS / Master DCS platform. Compatibility with AC 400 series depends on the specific subrack and backplane revision — please provide your system configuration details when submitting an RFQ so we can confirm fit.
Q: Can you supply the associated I/O module (e.g., DSAI, DSAO, DSDI series) alongside the DSTD 108P?
A: Yes. Konmask maintains stock of multiple Advant OCS I/O and communication modules. Bundle sourcing is available — contact us for a consolidated BOM quote.
Q: What is the typical lead time for urgent maintenance orders?
A: In-stock units can ship within 24–48 hours of order confirmation. Express courier (DHL Priority) to most destinations is 2–5 business days.
Q: Do you provide a certificate of conformance or test report?
A: A certificate of conformance (CoC) and inspection photo report are available upon request at no additional charge for orders of 2+ units.
Q: What if the module is DOA on arrival?
A: Konmask offers a 30-day dead-on-arrival (DOA) replacement policy. Contact support@konmask.com with photos and a fault description; replacement or full refund processed within 5 business days.
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