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ABB TY801 Shunt Stick

1. Product Overview

2. Core Specifications

3. Key Functions

3.1 Safe Live-Circuit Shunting

• Non-Intrusive DI Testing: The TY801’s 4mm probes connect directly to the dedicated test points on ABB terminal units (e.g., TU840’s 4mm test ports), eliminating the need to strip or disconnect field wires. Technicians can simulate a "closed" DI signal (e.g., a limit switch being triggered) to verify if the signal is correctly detected by the AC 800M DCS—no system shutdown required.
• Low-Resistance Shunt: With resistance <0.1Ω, the tool mimics the electrical behavior of a real closed DI device (e.g., a 24V DC limit switch), ensuring accurate testing without triggering false alarms or damaging I/O modules.

3.2 User & Equipment Protection

• Insulated Design: The 1kV AC insulation rating and flame-retardant handle protect technicians from electrical shock when working on live 24–48V DC DI circuits—critical for safety in high-voltage industrial environments (e.g., power plant control rooms).
• Current Limitation: The 5A continuous rating exceeds the typical current draw of ABB DI modules (<1A), preventing tool overheating or circuit damage during extended testing.

3.3 Ergonomic & Efficient Operation

• One-Hand Use: The compact, lightweight design (150mm length, 80g) allows technicians to operate the tool with one hand while monitoring DCS feedback on a screen—reducing testing time by 50% compared to manual wire-jumping methods.
• Universal Probe Compatibility: 4mm banana-style probes match the standard test point size on all ABB TU-series terminal units and S800/S900 I/O modules, eliminating the need for adapter cables.

4. Typical Applications

• Commissioning: Verify that 24V DC DI signals (e.g., valve "open/closed" status, conveyor photoeye inputs) are correctly routed from terminal units to the DCS—shunt each channel with the TY801 and confirm DCS displays the "closed" signal.
• Fault Diagnosis: Identify whether a DI signal failure stems from the field device (e.g., faulty limit switch) or the circuit (e.g., broken wire, faulty I/O module). If shunting with the TY801 triggers a valid DCS signal, the issue lies with the field device; if not, the circuit or module requires inspection.
• Maintenance: Test DI circuits after replacing terminal units or I/O modules—ensure the new hardware correctly transmits shunted signals to the DCS before reconnecting field devices.

5. Usage Notes

1. Voltage Compatibility: Only use with 12–48V DC DI circuits—do not apply to analog input (AI) channels or AC circuits (risk of module damage or electric shock).
2. Test Point Alignment: Ensure probes fully insert into terminal unit test points (≥5mm depth) to avoid intermittent contact, which can cause false test results.
3. Inspection Before Use: Check the handle for cracks and probes for bent pins—damaged insulation or probes increase shock risk; replace the tool if defects are found.
4. No Extended Shunting: Use the tool for temporary testing only (≤5 minutes per channel)—prolonged shunting may overheat field devices or drain backup batteries in critical systems.
5. Storage: Keep the TY801 in a dry, temperature-controlled environment (-20°C~+60°C) — avoid exposure to water, oil, or corrosive chemicals to preserve insulation and probe integrity

The structure and details of the product：

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