Description
The HIMA F35 is a specialized 4-channel counter module designed for use in the H41q and H51q HIMax/HIMA safety-related automation systems. It is engineered to process high-speed pulse signals from sensors such as flow meters, tachometers, and encoders in safety-critical applications.
Product Parameters (Datasheet)
- Model Number: F35
- Module Type: 4-Channel Counter Module
- Input Signal Level: 24 VDC (High-level pulse)
- Input Frequency: Up to 10 kHz (Standard for safety-related pulse processing)
- Operating Voltage: 24 VDC (Internal system power)
- Current Consumption: Approx. 150 mA
- Isolation: Safe electrical isolation between field side and system logic
- Safety Integrity: Suitable for applications up to SIL 3 (IEC 61508)
- Status Indicators: LED diagnostics for channel status and module faults
HIMA F35
HIMA F35
HIMA F35
Country of Origin
This safety module is engineered and manufactured by HIMA Paul Hildebrandt GmbH in Germany, the world leader in dedicated safety-related automation solutions.
Application Fields
The F35 is utilized in industries where precise, safety-critical speed or flow monitoring is required:
- Turbine Control: Monitoring rotational speed (RPM) for overspeed protection.
- Chemical Processing: Precise metering of hazardous chemicals using pulse-output flow sensors.
- Oil & Gas: Tracking volume flow in pipelines for leak detection and safety shut-off logic.
- Pulp & Paper: Coordinating speed synchronization on large-scale machine rollers.
- Discrete Manufacturing: Managing safety interlocks for high-speed conveyor systems.
Product Usage Instructions
- Chassis Installation: Insert the F35 into a dedicated I/O slot within the HIMA subrack. Ensure the module is fully seated and the fastening screws are tightened to guarantee proper grounding.
- Field Wiring: Connect the pulse-generating sensors to the module’s input terminals. For high-frequency signals, use shielded twisted-pair cables to prevent electromagnetic interference from causing false counts.
- Counter Configuration: Use the ELOP II or SILworX programming tool to configure the counter parameters, such as gate times, scaling factors, and threshold limits.
- Redundancy Check: In high-availability systems, verify that the module is correctly paired with its redundant partner. The HIMA system will automatically manage the 2-out-of-2 (2oo2) or 1-out-of-2 (1oo2) voting logic.
- Diagnostic Monitoring: Regularly inspect the front panel LEDs. A green “RUN” LED indicates normal operation, while a red “ERR” LED signals an internal fault or a pulse-sensing discrepancy.
Product Technical Description
Technically, the F35 is a “fail-safe” digital input module optimized for frequency measurement. It doesn’t just count pulses; it performs continuous internal cross-checks on its own counting logic to detect latent hardware failures. The module can be configured in various modes, such as frequency measurement, period measurement, or totalization. Its integrated diagnostics can detect short circuits or wire breaks in the field circuitry, ensuring that the safety system defaults to a “safe” state if the signal integrity is compromised.
Q&A (Common Questions)
Q: Can the F35 be used with 5V TTL encoders? A: No, the F35 is designed for 24 VDC pulse levels. To use 5V encoders, an external signal level converter or a different HIMA module variant would be required.
Q: What happens if the input frequency exceeds 10 kHz? A: Frequencies above the rated 10 kHz may result in missed counts or “aliasing” errors. For higher speeds, check if the module’s filters can be adjusted or if a specialized high-speed counter is needed.
Q: Is this module hot-swappable? A: Yes, in a redundant HIMA system configuration, the F35 can be replaced while the system is powered and the process is running without triggering a safety shutdown.
Q: How does the module handle a “Power Loss” event? A: The F35 is volatile; the current count value is typically stored in the central processor’s non-volatile memory. Upon power restoration, the module re-initializes based on the last saved state in the controller.
Similar Model Recommendations
- HIMA F30 (Digital Input Module)
- HIMA F60 (Digital Output Module)
- HIMA F3330 (4-channel Analog Input for safety systems)
- HIMA F8650 (Central Processing Unit for HIMax)
- HIMA F35 01 (Alternative hardware revision)
For technical support or to procure the HIMA F35, please contact our safety instrumentation specialists.
