Products Description
ABB DSSR122 48990001-NK Signal Relay Module
ABB DSSR122 (48990001-NK) is a relay output module for ABB Advant OCS / MasterPiece DCS system. It provides dry contact relay outputs to trigger alarms, trip signals and interlock commands for field equipment.
This module is designed for safety interlock and alarm signal output in power and industrial control systems. It is an obsolete product, commonly used as maintenance spare parts for old DCS control cabinets.
Main Specifications
| No. | Item | Parameter |
|---|---|---|
| 1 | Brand | ABB |
| 2 | Model | DSSR122, Part No:48990001-NK |
| 3 | Module Type | Relay Output Module |
| 4 | System Platform | ABB Advant OCS / MasterPiece DCS |
| 5 | Output Type | Dry contact relay outputs |
| 6 | Function | Alarm output, equipment trip and safety interlock |
| 7 | Installation | Rack mounted, backplane bus connection |
| 8 | Product Status | Discontinued, spare replacement only |
Core Functions
| No. | Function Description |
|---|---|
| 1 | Receive control commands from DCS controller and drive internal relays to switch dry contact status |
| 2 | Send hardwired trip, interlock and alarm signals to field actuators and protection circuits |
| 3 | Isolate DCS control circuit from field high-power loop via relay contact isolation |
| 4 | Module self-diagnosis for power and communication faults with front panel status LEDs |
| 5 | Support safety interlock logic output for emergency shutdown of critical industrial equipment |
Application Scenarios
| No. | Application |
|---|---|
| 1 | Power plant boiler, turbine and generator DCS control cabinet |
| 2 | Chemical, petrochemical plant safety interlock and emergency shutdown system |
| 3 | Metallurgy, pulp & paper old Advant OCS distributed control system |
| 4 | DCS cabinet spare module replacement and on-site emergency maintenance |
| 5 | Legacy industrial automation system spare parts inventory and overhaul project |
FAQ
| No. | Question & Answer |
|---|---|
| 1 | Q:What is ABB DSSR122 48990001-NK? A:It is relay output module for ABB Advant OCS DCS, used to output dry contact signals for interlock and alarm protection. |
| 2 | Q:What kind of signal does it output? A:Dry relay contact, suitable for hardwired safety interlock, trip and alarm signal transmission. |
| 3 | Q:Is this module still in production? A:ABB has discontinued this model, only available as spare parts for maintaining existing old DCS systems. |
