HIMA K7214 Power Supply Module (996721402)

The HIMA K7214 (order number 996721402) is a high-reliability power supply module designed for use in HIMax safety instrumented systems. It accepts a nominal 24 VDC input from an external industrial power source and provides regulated voltages to the HIMax backplane, ensuring stable operation of the CPU, I/O modules, and communication interfaces. The module is certified for use in SIL 3 applications and features comprehensive diagnostics, overload protection, and support for redundant configurations to maximize system availability. Its rugged design meets the demanding requirements of process safety applications in oil & gas, chemical, and power industries.

Key Features

• SIL3 Certified: Suitable for the highest safety integrity levels, ensuring fail-safe power distribution.

• Redundancy Ready: Two K7214 modules can be connected in parallel (1+1 redundancy) with load sharing and automatic switchover.

• Wide Input Range: Accepts 24 VDC nominal (18–32 VDC) with reverse polarity protection.

• Integrated Diagnostics: Status LEDs for input OK, output OK, and fault; remote alarm via relay contact.

• Short-Circuit Protection: Output is protected against short circuits and overloads; auto-recovery after fault clearance.

• Hot-Swappable: In redundant mode, a faulty module can be replaced without powering down the system.

Technical Specifications

• Input Voltage: 24 VDC nominal (18–32 VDC)

• Input Current: 2.5 A typical (depending on load)

• Output Power: 30 W (typical) to backplane

• Efficiency: > 85%

• Isolation: 500 VAC between input and output

• Diagnostics: Relay contact rating 30 VDC / 1 A

• Operating Temperature: -20°C to +60°C

• Certifications: TÜV Rheinland (SIL3), CE, UL, ATEX (Zone 2)

Applications

The K7214 is used in all HIMax safety systems requiring dependable power. Typical applications include emergency shutdown (ESD), fire and gas (F&G), burner management (BMS), and turbine control. In redundant configurations, it ensures that a single power supply failure does not interrupt safety functions, meeting the high availability requirements of SIL 3 applications.

Integration and Monitoring

The module plugs into the HIMax chassis and is automatically recognized by the system. The diagnostic relay can be wired to a digital input module to report power status to the safety controller. The front-panel LEDs provide immediate visual feedback: green for normal operation, red for fault. In redundant setups, both modules share the load; if one fails, the other continues to supply full power without interruption.

Reliability and Environmental Compliance

Designed for harsh industrial environments, the K7214 meets IEC 61000-4 immunity standards and is tested for vibration and shock. Its operating temperature range of -20°C to +60°C covers most process plant conditions. The module is RoHS compliant and carries CE and UL marks for global acceptance.

With its robust design and safety certifications, the HIMA K7214 (996721402) power supply module ensures reliable power delivery for critical safety systems, contributing to overall plant safety and availability.