Emerson SE4001S2T2B5 Controller

Emerson SE4001S2T2B5 (also commonly labeled as VE4001S2T2B5) is a DeltaV M series 32 channel 24VDC digital input module used for DCS system acquisition of switch/contact signals, and is not a complete controller.

1、 Basic Information
Model: SE4001S2T2B5 (also known as VE4001S2T2B5)
Brand: Emerson
Series: DeltaV M-Series I/O
Type: 32 channel digital input (DI) module
Purpose: Collect on-site dry contact/24VDC switch signals → DCS controller
2、 Core parameters
Number of channels: 32 DI channels
Input voltage: 24VDC (on-site power supply)
Single channel current: approximately 2mA@24VDC
ON threshold:>15VDC (or>2mA)
OFF threshold:<5VDC (or<0.25mA)
Input impedance: ≈ 5k Ω
Isolation: Channel → System photoelectric isolation 1500VDC
Protection: Each channel is independently blown off
Power consumption: Local bus 12V: 50mA typical; On site 24V: 150mA
Working temperature: -40 ℃~+70 ℃
Protection: IP20; conformal coating（S2）； High temperature level T2
Weight/Size: Approximately 2kg; Standard DIN rail installation
3、 Model Analysis (SE4001S2T2B5)
SE4001:32 channel DI, 24VDC, M series
S2: Normal coating (moisture-proof and dustproof coating)
T2: High temperature environment adaptation (-40 ℃~+70 ℃)
B5: Hardware version/terminal configuration
4、 Key characteristics
High density: 32 channels per single card, saving cabinet space
High isolation: 1500VDC photoelectric isolation, strong anti-interference
Wide temperature range: -40 ℃~+70 ℃, suitable for harsh industrial environments
Coating protection: S2 coating, moisture-proof, mildew proof, and corrosion-resistant
Live plug and unplug: supports online replacement without affecting system operation
5、 Typical applications
Petrochemical/power plant/water treatment: DeltaV DCS system switch quantity acquisition
On site signals: valve limit, pump start stop, pressure/level switch, dry contact alarm
6、 Status and shutdown
Current status: In production (2026-05-22), DeltaV M series mainstream I/O
Alternative model: No direct replacement, compatible version with SE4001S2T2Bx in the same series