Overview
Configured for high-frequency pulse signal measurement in Tricon safety instrumented systems, the TRICONEX 3510 (3510 Pulse Input Module) provides direct physical and electrical acquisition of pulse inputs from field speed sensors.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 3510 |
| Brand | TRICONEX |
| Module Type | TMR Pulse Input Module |
| System Compatibility | Tricon Safety Instrumented System |
| Origin | USA |
| Weight | Not specified in available technical data |
| Dimensions | Not specified in available technical data |
| Operating Temp | Not specified in available technical data |
| Power Consumption | Less than 20 W |
| Input Channels | 8 non-commoned pulse input channels |
| Input Architecture | Triple Modular Redundant (TMR) |
| Input Type | AC-coupled balanced differential input |
| Input Frequency Range | 20 Hz to 20,000 Hz |
| Input Update Rate | 50 ms typical |
| Accuracy (20 Hz to 99 Hz) | +/- 1.0% |
| Accuracy (100 Hz to 999 Hz) | +/- 0.1% |
| Accuracy (1,000 Hz to 20,000 Hz) | +/- 0.01% |
| Load Impedance | Greater than 8 kOhm, 20 kOhm typical |
| Common Mode Range | -100 V to +100 V peak-to-peak |
| Normal Mode Input Range | 1.5 V to 200 V peak-to-peak (20 Hz to 15,000 Hz) |
| Over-range Protection | +/- 150 VDC continuous |
| Hysteresis | 150 mV typical |
| Diagnostic Fault Detection | 0.5% of full scale |
| Status Indicators | PASS, FAULT, ACTIVE |
Triple Modular Redundancy and Fail-Safe Signal Processing
The TRICONEX 3510 applies triple modular redundancy (TMR) 2oo3 architecture to pulse input processing. The module receives field pulse signals through three independent input channels and performs internal comparison before transmitting validated measurement data to Tricon processors.
Moreover, the module supports fail-safe state execution by monitoring channel conditions and identifying input discrepancies during operation. The TMR structure allows the safety system to continue signal evaluation while detecting individual channel faults.
The module provides electrical separation between input processing paths and supports diagnostic monitoring for pulse frequency measurement applications. It is configured for use with magnetic pickup sensors and other frequency-output field devices.
Frequently Asked Questions
Q: What pulse signal sources can the TRICONEX 3510 accept?
A: The module accepts pulse-generating field devices, including magnetic speed sensors and frequency-output instruments used for speed and rotation measurement.
Q: How does the 3510 process redundant input signals?
A: The module uses three independent processing channels based on TMR architecture and compares channel data before transferring validated information to the Tricon main processors.
Q: Does the module support high-frequency measurement applications?
A: Yes. The 3510 supports pulse frequency measurement from 20 Hz to 20,000 Hz with frequency-dependent accuracy specifications.
Field Installation Guidelines
- Install the module only in a compatible Tricon chassis position defined by the system configuration.
- Verify pulse sensor wiring polarity before connecting field conductors to the input terminals.
- Use shielded cables for pulse signal wiring and connect shields according to site grounding practices.
- Separate pulse input cables from high-voltage power conductors to reduce electrical interference.
- Confirm field device frequency range settings match the configured module measurement parameters.
- Check PASS, FAULT, and ACTIVE indicators after installation to verify operating status.
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