Description
EMERSON DELTAV
12P2535X052
DI SERIES 2 DISCRETE IN 24 VDC DRY CONTACT
KJ3201X1-BA1
REV.F
PMS001569
FISHER-ROSEMOUNT SYSTEMS
LOCAL BUS POWER RATING: 12VDC, 150mA
BUSSED FIELD POWER RATING: 24 VDC, 100mA
FIELD CIRCUIT RATING: 24VDC, 5mA/Ch
AMBIENT TEMPERATURE: -40 TO 70C
KEY POSITION: B 1
The Emerson DeltaV KJ3201X1-BA1 is a Series 2 Discrete Input (DI) module designed to accept 24VDC dry contact field signals within the DeltaV distributed control system (DCS) architecture. As a core component within the PLC & HMI category, this module translates the open or closed state of field devices — such as switches, pushbuttons, valve position indicators, and relay contacts — into digital logic signals processed by the DeltaV controller. Its wide ambient temperature tolerance and robust electrical ratings make it well suited to the demanding environments encountered in marine and offshore process automation.
Key Features
✓ Accepts 24VDC dry contact discrete input signals with a field circuit rating of 24VDC at 5mA per channel, enabling reliable interfacing with switches, contactors, and position sensors.
✓ Local bus power rating of 12VDC at 150mA and bussed field power rating of 24VDC at 100mA as stated on the module nameplate, supporting standard DeltaV I/O carrier configurations.
✓ Rated for an ambient temperature range of -40°C to +70°C, making it suitable for installation in machinery spaces, control rooms, and other areas subject to thermal variation onboard.
✓ Identified at Key Position B 1, ensuring correct physical placement within the DeltaV I/O subsystem and preventing incorrect module substitution during maintenance or replacement.
✓ Revision F designation and Fisher-Rosemount lineage confirm compatibility with established DeltaV DCS installations; cross-compatibility with specific controller versions and carrier hardware is subject to confirmation against the vessel’s system configuration.
Marine Applications
✓ Process automation and safety monitoring on LNG carriers, FPSOs, and offshore platforms where DeltaV DCS systems are used to manage critical field I/O signals.
✓ Machinery control and alarm monitoring systems aboard tankers and bulk carriers, capturing discrete status signals from pumps, valves, and drives.
✓ Cargo handling and loading system integration on chemical tankers, where dry contact inputs from field instrumentation feed into the vessel’s centralised automation system.
✓ Engine room automation panels and integrated bridge systems on larger commercial vessels requiring distributed I/O with high environmental resilience.
✓ Retrofit and upgrade projects on existing DeltaV-equipped vessels where ageing Series 2 I/O modules require like-for-like replacement to maintain system integrity.
Why Marine Engineers Choose
The DeltaV Series 2 Discrete Input module is a proven component in marine and offshore DCS environments, valued for its straightforward integration into existing DeltaV I/O subsystems, its clearly defined electrical ratings, and its ability to operate reliably across a wide temperature range without derating — reducing downtime risk during critical operations.
Ideal For
FPSOs, LNG carriers, offshore drilling units, chemical tankers, bulk carriers, and any commercial vessel or offshore installation operating an Emerson DeltaV distributed control system requiring discrete field input capability.
Technical Support & Compliance
Technical assistance is available to support troubleshooting, onboard diagnostics, testing and commissioning, module replacement, and integration into existing or upgraded DeltaV DCS architectures. Retrofit and system upgrade guidance can be provided subject to review of the installation details. To confirm compatibility and suitability, buyers are advised to share nameplate photographs, the full part number and revision, carrier and controller model references, DeltaV system version, relevant loop or I/O drawings, and vessel name or IMO number where applicable. All compatibility assessments are subject to confirmation based on the information provided.
