ABB V18345-1010121001 Electro-Pneumatic Positioner | TZIDC with HART & Single-Acting Specs

ABB V18345-1010121001 TZIDC positioner specifications. 4-20mA HART, IP65, single-acting fail-safe, with analog feedback. For standard industrial valve control applications.

ABB V18345-1010121001 Electro-Pneumatic Positioner

The ABB V18345-1010121001 is a TZIDC series electro-pneumatic positioner​ with 4-20mA HART communication​ and single-acting fail-safe functionality. This standard version (non-explosion proof) is designed for general industrial applications, featuring analog position feedback and robust IP65-rated construction. It converts electrical signals into precise pneumatic output for valve positioning in process control systems.

Key Features

• HART Communication:​ 4-20mA two-wire input with HART protocol for configuration and diagnostics

• Single-Acting Operation:​ Designed for single-acting actuators with spring return and fail-safe function

• Analog Position Feedback:​ Standard 4-20mA position feedback signal for remote monitoring

• Auto-Tuning:​ Automatic stroke adjustment for quick commissioning

• Robust Construction:​ IP65-rated aluminum housing suitable for industrial environments

Technical Specifications

Model Number Decoding (V18345-1010121001)

• V18345:​ Series identifier for TZIDC positioners

• 1:​ Case/mounting type (1 = aluminum housing, IP65)

• 0:​ Input/communication (0 = 4-20mA with HART)

• 1:​ Explosion protection (1 = without explosion protection​ - standard version)

• 0:​ Output/safe position (0 = single-acting, fail-safe)

• 1:​ Connections (1 = cable thread 1/2-14 NPT, air pipe 1/4-18 NPT)

• 2:​ Option modules (2 = plug-in analog position feedback module)

• 1:​ Design (1 = standard)

• 0:​ Additional options (0 = standard)

• 0:​ Reserved

• 1:​ Reserved

Note:​ The second digit "0" in this model number indicates 4-20mA HART communication (not to be confused with Profibus PA models which also use "0" but in different context).

Key Differences from Other Models

Compared to previously discussed V18345 variants:

• V18345-1010121001:​ Standard version + single-acting fail-safe + with analog feedback​ (this model)

• V18345-1027121001:​ ATEX certified + double-acting fail-freeze + with analog feedback

• V18345-2020521501:​ Profibus PA + double-acting fail-freeze + with analog feedback

• V18345-1010221001:​ Standard version + single-acting fail-safe + no feedback

The 1010121001​ configuration is a standard industrial version​ (non-ATEX) with single-acting actuator support​ and analog position feedback, making it suitable for general process control applications.

Typical Applications

• Control valves in chemical processing plants (non-hazardous areas)

• Water and wastewater treatment systems

• HVAC control systems with single-acting actuators

• General industrial process control

• Applications requiring position monitoring and HART communication

Important Selection & Installation Notes

1. Actuator Compatibility:​ Designed for single-acting actuators only​ (with spring return). Verify your actuator type before selection.

2. Non-Explosion Proof:​ This model is not certified for hazardous areas. Do not use in Zone 1/2 or other explosive atmospheres.

3. HART Configuration:​ Requires configuration using a HART communicator or ABB configuration software. Some parameters may need adjustment for optimal performance.

4. Fail-Safe Function:​ On signal/power loss, the valve moves to the configured safe position (open or close). Ensure this meets your process safety requirements.

5. Wiring:​ Use shielded twisted-pair cable with proper grounding. Follow standard industrial wiring practices.

6. Air Supply:​ Ensure clean, dry instrument air supply within specified pressure range (1.4-6 bar).

7. Commissioning:​ Perform auto-tuning after installation to optimize control performance.

Note: Specifications are based on the TZIDC series data and model number decoding conventions. The exact configuration for this specific model number includes 4-20mA HART communication, single-acting operation, fail-safe functionality, and analog position feedback. For complete technical data, dimensional drawings, and installation guidelines, consult the official ABB TZIDC Positioner Technical Manual​ or contact ABB technical support.