Description
The HIMA F3236 is a high-integrity analog input module designed for use in H41q and H51q safety-related systems. It is engineered to provide reliable data acquisition for critical safety functions, certified up to SIL 3 (IEC 61508) and AK 6 (DIN V 19250).
Product Parameters (Datasheet)
- Model Number: F3236
- Series: H41q / H51q
- Number of Channels: 16 (Single-ended)
- Input Signal: 0/4 to 20 mA (Can be configured for 0 to 5 V or 0 to 10 V)
- Resolution: 12-bit
- Input Resistance: Approx. 250 Ohms (for current inputs)
- Safety Integrity Level: SIL 3
- Power Requirement: 5 V DC / 180 mA (from the system)
- Isolation: Galvanic isolation between field side and system logic
- Space Requirement: 4 units (TE) wide
HIMA F3236
HIMA F3236
HIMA F3236
Country of Origin
This safety-critical automation module is engineered and manufactured by HIMA Paul Hildebrandt GmbH in Germany, adhering to the highest global standards for functional safety.
Application Fields
The F3236 is a staple in high-risk process industries where a “fail-safe” state is mandatory:
- Emergency Shutdown (ESD): Monitoring critical pressure and temperature levels in chemical reactors.
- Fire and Gas (F&G): Interfacing with flame detectors and toxic gas sensors in oil refineries.
- Burner Management Systems (BMS): Controlling gas flow and flame monitoring in industrial boilers.
- Turbomachinery Protection: Monitoring vibration and overspeed indicators on large turbines.
- Nuclear Power: Applied in balance-of-plant monitoring and safety-critical cooling loops.
Product Usage Instructions
- Chassis Mounting: Slot the module into the HIMA subrack. Ensure the module is firmly seated and the front-panel screws are tightened to provide a secure ground connection.
- Configuration: The module must be defined within the ELOP II or SILworX engineering software. Ensure the input range (e.g., 4-20 mA) matches the field transmitter.
- Redundancy: To achieve TMR (Triple Modular Redundant) or 2oo3 voting logic, multiple F3236 modules should be utilized as part of the system architecture.
- Wiring: Use shielded twisted-pair cables for signal lines to minimize electromagnetic interference. Ground the shields at the entrance to the cabinet.
- Diagnostic LEDs: Monitor the “ERR” (Error) and “RUN” LEDs. A red “ERR” light indicates a hardware fault or an input signal that is out of range (underflow/overflow).
Product Technical Description
The F3236 is part of HIMA’s modular safety platform. Its core function is to convert field analog signals into a digital format that the safety processor can evaluate. Technically, it features advanced onboard self-diagnostics. The module continuously performs cross-checks on its internal A/D converters and reference voltages. If a discrepancy is detected that could lead to an unsafe failure, the module automatically reports a fault to the CPU, allowing the system to take the plant to a pre-defined safe state. The 16-channel high-density design allows for a significant reduction in cabinet footprint while maintaining full isolation between the hazardous field environment and the sensitive control logic.
Q&A (Common Questions)
- Q: Can the F3236 be used in a SIL 2 application?
- A: Yes, it is rated for up to SIL 3, meaning it exceeds the requirements for SIL 2 and can be safely used in lower SIL-rated loops.
- Q: What happens if a sensor wire is broken?
- A: In a 4-20 mA configuration, the F3236 detects the signal drop below 3.6 mA as a “Wire Break” fault and triggers a diagnostic error.
- Q: Is the module hot-swappable?
- A: Yes, HIMA H41q/H51q systems support the replacement of I/O modules while the system is energized, provided the appropriate safety bypasses are in place.
- Q: Does this module require an external power supply for the sensors?
- A: The F3236 measures the signal; however, the loop power for the field transmitters must typically be provided by an external 24 V DC source.
Similar Model Recommendations
- HIMA F3237: 8-channel version for specialized applications.
- HIMA F3330: 8-channel digital input module.
- HIMA F3333: 4-channel digital output module.
- HIMA F6217: Analog input module for newer HIMax systems.
- HIMA F8650: Central processing unit for H51q systems.
For more information on the HIMA F3236 and technical assistance for HIMA safety systems, please contact our support department.
