Jaquet Trip Chain Control card FTBU 3034 377Z-05030

The Jaquet FTBU 3034 (Part Number: 377Z-05030) is a high-integrity, safety-certified Trip Chain Control Card belonging to the Jaquet FT 3000 Overspeed Protection System series. 

Functioning as a central voting and command logic unit, it is engineered to bring various trip commands, auxiliary signals, and emergency shutdowns directly into a SIL 3-compliant safety loop.

Product Introduction / Overview

Within high-speed industrial machinery installations, overspeed is not the only hazard; oil pressure loss, manual emergency stops, and temperature spikes must also trigger a reliable machine shutdown. The Jaquet FTBU 3034 is a specialized module designed to consolidate external system trip signals into the hardware-voted trip chain of the FT 3000 rack.

The card translates six opto-coupled inputs (IN1–IN6) directly into six potential-free change-over relay contacts (K1–K6) in a 1:1 relationship. In addition, the onboard processor calculates complex, hardware-level logical voting combinations of these inputs to control a dedicated "OUT" safety output. This "OUT" signal can execute an optimized local shutdown sequence and link multiple racks into cohesive 2-out-of-3 (2oo3) voting architectures.

Technical Parameter List

Product Features / Core Advantages

IEC 61508 SIL 3 Compliance: Integrates external sensors and auxiliary trip valves into a certified functional safety system.

Built-in Logical Consolidation: Automatically triggers the main safety output (OUT) under the hardware-wired logical equation:

$$text{OUT is active (de-energized) when: } (text{IN1} land text{IN2}) lor (text{IN3} land text{IN4}) lor text{IN5} lor text{IN6}$$

This simplifies complex external wiring panels by packing standard multi-sensor logic directly onto the card.

Advanced Hardware Self-Diagnostics: Features an onboard watchdog that constantly checks the health of internal logic chips and external power rail deviations.

Trip Chain Test Facility: Allows technicians to manually simulate trip commands and loop configurations without interrupting actual operations, maximizing plant uptime.

Model Classification

The FTBU 3034 occupies a distinct spot as the central logical organizer within the modular FT 3000 portfolio:

FTBU 3034 (377Z-05030): The standard safety logic voting and trip consolidation card.

FTFU 3024 Motherboards (377Z-03981 / -03982): Frequency-processing modules that acquire raw speed sensor data and feed thresholds to the system.

FTV 3090 (377Z-03985): Secondary, high-density auxiliary relay boards (4 relays with 4 change-over contacts each) designed primarily for 2oo3 votings.

FTK 3072 (377Z-03986): The primary communications and configuration interface card.

Environmental Tolerance Conditions

Installation Method

The card must be integrated into a standard 19" FT 3000 rack:

Power Isolation: Ensure the rack's power supplies are completely shut off before physically sliding the card into its designated slot to prevent bus surges.

Backplane Insertion: Line up the PCB edges with the upper and lower guide rails of the subrack. Push smoothly until the heavy-duty DIN 41612 rear connector seats fully.

Chassis Fastening: Tighten the two collar screws on the front panel to anchor the card and connect the front faceplate to the rack's frame ground.

Field Wiring: Connect the digital inputs (IN1–IN6) and safety contact circuits (K1–K6. OUT) to the corresponding backplane terminals using shielded cabling. Ensure shields are grounded at the rack entry point.

Operating Instructions

Initial Commissioning

Before powering on, verify that the active-low level inputs (OV active level) correspond to safe running conditions on your physical machines. Use the FT 3000 Windows configuration software (interfaced through the FTK 3072 comms card) to map correct latched or non-latched states for the relays.

Active Diagnostics & Testing

During routine operation, monitor the status LEDs on the front panel:

Relay Status Indicators: Show which input channels (IN1–IN6) are active and which relays (K1–K6) are currently energized.

Testing Loop: Run proof-tests utilizing the onboard trip chain self-test facility. This simulates input conditions to prove the integrity of safety-critical output paths without physically tripping the main machinery.

Important Lifecycle Notice: The Jaquet FT 3000 system has been designated as obsolete by the manufacturer. For new installations or complete system retrofits, it is highly recommended to explore modern certified upgrades such as the SpeedSys 300 system.