ABB V18345-1027420001 Electro-Pneumatic Positioner | TZIDC with ATEX & No Feedback Specs

ABB V18345-1027420001 TZIDC positioner specifications. ATEX certified, IP65, 4-20mA HART, double-acting fail-safe, no position feedback. For hazardous area valve control.

ABB V18345-1027420001 Electro-Pneumatic Positioner

The ABB V18345-1027420001 is a TZIDC series electro-pneumatic positioner with ATEX explosion protection certification​ and double-acting fail-safe functionality. This model is designed for hazardous areas (Zone 1/2) and features a configuration without position feedback​ (no analog feedback module). It converts a 4-20mA electrical signal into pneumatic output for precise valve positioning in potentially explosive atmospheres where position monitoring is not required.

Key Features

• ATEX Certification:​ Approved for hazardous areas (Zone 1/2, Ex ia IIC T6/T4 Gb).

• Double-Acting Operation:​ Designed for double-acting actuators with fail-safe (open/close) functionality.

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

• No Position Feedback:​ This configuration does not include analog position feedback module.

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

Technical Specifications

Model Number Decoding (V18345-1027420001)

• V18345:​ Series identifier for TZIDC positioners

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

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

• 2:​ Explosion protection (2 = ATEX certified, Ex ia IIC T6/T4 Gb)

• 7:​ Output/safe position (7 = double-acting, fail-safe)

• 4:​ Connections (4 = cable thread M20x1.5, air pipe 1/4-18 NPT)

• 2:​ Option modules (2 = no plug-in module​ - position 6 indicates "no feedback")

• 0:​ Design (0 = standard)

• 0:​ Additional options (0 = standard)

• 0:​ Reserved

• 1:​ Reserved

Note on Position 6 (Option Modules):​ In TZIDC model numbering, position 6 (the 7th digit) indicates the option module configuration. For this model, "2" typically means no plug-in module​ (no analog feedback), while "1" would indicate analog feedback module included. This is a key differentiator from previous models.

Key Differences from Previous Models

Compared to the previously discussed V18345 variants:

• V18345-1027420001:​ ATEX certified + double-acting fail-safe + no feedback​ (this model)

• V18345-1021521001:​ ATEX certified + double-acting fail-safe + with analog feedback

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

• V18345-1010521001:​ Standard version + double-acting fail-freeze + with analog feedback

The 1027420001​ configuration is specifically designed for hazardous area applications where position feedback is not required​ for the control system, offering a cost-optimized solution.

Typical Applications

• Control valves in petrochemical and chemical plants (hazardous areas)

• Oil and gas production facilities where position monitoring is not critical

• Process control systems requiring ATEX certification but not position feedback

• Applications where the control system does not require valve position monitoring

• Cost-sensitive projects in hazardous environments

Important Selection & Installation Notes

1. Hazardous Area Classification:​ This model is certified for Zone 1/2 hazardous areas. Must​ be installed in accordance with ATEX directives and local electrical codes for intrinsically safe installations.

2. No Position Feedback:​ This model does not provide​ a 4-20mA position feedback signal. If your control system requires valve position monitoring, select a model with analog feedback (e.g., V18345-1021521001).

3. Actuator Compatibility:​ Designed for double-acting actuators only. Verify your actuator type before selection.

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. Intrinsic Safety Barriers:​ Requires intrinsically safe barriers in the control loop when used in hazardous areas. Follow manufacturer's installation guidelines.

6. Configuration:​ Requires configuration using a HART communicator or ABB configuration software. Note:​ Some configuration functions may be restricted in hazardous area installations.

7. Wiring:​ Use shielded twisted-pair cable with proper grounding. In hazardous areas, follow ATEX wiring requirements and use certified cable glands.

8. Maintenance:​ Only qualified personnel trained in hazardous area equipment should perform maintenance or calibration.

Note: Specifications are based on the TZIDC series data and model number decoding conventions. The exact configuration for this specific model number includes ATEX certification, double-acting operation, fail-safe functionality, and no position feedback module. For complete technical data, dimensional drawings, and installation guidelines for hazardous areas, consult the official ABB TZIDC Positioner Technical Manual​ or contact ABB technical support.