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HIMA KFD2-STC4-Ex1 – 1-Channel Isolated Safety Barrier
Product Overview
The HIMA KFD2-STC4-Ex1 is a 1-channel isolated safety barrier designed for hazardous industrial environments, serving as a critical interface between field smart transmitters and control systems. It addresses the core challenge of safe signal transmission and electrical isolation in explosive or high-risk areas, preventing electrical interference and overcurrent/overvoltage damage to sensitive equipment. This device stabilizes 0/4-20mA analog signals, ensuring accurate data transfer from 2-wire/3-wire transmitters to DCS or PLC systems. It is widely used in petrochemical, chemical and wastewater treatment sectors, resolving issues of signal distortion and safety hazards in harsh, explosive working conditions.
Technical Specifications — KFD2-STC4-Ex1
| Parameter | Value |
|---|---|
| Product Model | KFD2-STC4-Ex1 |
| Manufacturer | HIMA |
| Product Type | 1-Channel Isolated Safety Barrier |
| Power | 20–35 V DC, power consumption ≤1.9 W |
| Communication / Protocol | Analog signal transmission (0/4-20mA) |
| Operating Temperature | -20 °C to +80 °C |
| Mounting | 35 mm DIN Rail Mount (per EN 60715:2001) |
| Dimensions (HxWxD) | 20 mm x 124 mm x 115 mm |
| Weight | Approximately 0.12 kg |
| Typical Interfaces | Input terminals (1+, 2-, 3/5-, 6+), output terminals (7-, 8+, 9), power terminals (14+, 15-), test points |
| Compliance | CE, RoHS, SIL 2 (per IEC/EN 61508), IP20 |
HIMA KFD2-STC4-Ex1
Key Features and Benefits — KFD2-STC4-Ex1
- Single-channel design with high-precision analog signal transmission (0/4-20mA), ensuring accurate data transfer with minimal signal distortion.
- Built-in electrical isolation, effectively separating field devices from control systems to prevent interference and equipment damage.
- Equipped with terminal test points, facilitating on-site debugging and maintenance without disconnecting the system.
- Wide operating voltage range (20–35 V DC) and temperature tolerance, adapting to harsh industrial and hazardous environments.
- Compact DIN rail mounting design, saving space and enabling quick installation in control cabinets.
Related Models
- HIMA KFD2-STC4-Ex2: 2-channel isolated safety barrier, suitable for multi-transmitter signal transmission scenarios.
- HIMA KFD2-CD-EX1.32: Analog input-output safety barrier, complementing the target model with both input and output functions.
- HIMA KFD2-STC2-Ex1: Low-power 1-channel safety barrier, ideal for small-scale industrial control systems.
- HIMA KFD2-STC6-Ex1: 6-channel safety barrier, designed for large-scale field device signal integration.
Installation and Maintenance — KFD2-STC4-Ex1
- Mount the barrier on a 35 mm DIN rail, ensuring correct wiring of power supply, input (transmitter) and output (control system) terminals.
- Verify input signal type matches 2-wire/3-wire smart transmitters and output load is within 0–800Ω before power-on.
- Routine maintenance involves checking terminal connections for tightness and cleaning test points to avoid signal interference.
- Periodically inspect the device for physical damage, as its robust construction ensures long-term reliability in hazardous areas.
