ABB V18345-2020521001 TZIDC Electro-Pneumatic Positioner

The ABB V18345-2020521001 is a TZIDC electro-pneumatic positioner. This device includes a mechanical position indicator for local viewing. You can mount it on linear actuators per DIN/IEC 534 standards. It also fits rotary actuators according to VDI/VDE 3845. The unit comes in a varnished aluminum case with IP65 protection.

Technical Specifications of the V18345-2020521001

The ABB V18345-2020521001 uses two-wire 4-20 mA input technology. It includes an FSK module for HART communication. The housing is made of varnished aluminum with IP65 (NEMA 4X) rating. The case includes a mechanical position indicator. The design uses standard varnish and coding.

Output and Safe Position

The output is double acting with fail freeze. In an electrical power failure, the actuator freezes in position. The air pipe connection uses 1/4-18 NPT thread. The cable connection uses 1/2-14 NPT thread. The ABB V18345-2020521001 includes a plug-in analog position feedback module. The feedback signal range is 4 to 20 mA.

Input Signal Details

The nominal input range is 4 to 20 mA. Split range configuration works between 20% and 100% of nominal range. The maximum input is 25 mA at 30V. The minimum starting current is 3.8 mA. Without analog feedback, the minimum is 3.4 mA. With analog feedback, the minimum is 3.5 mA.

The load voltage at 20 mA is 8.7V DC without explosion protection. The impedance at 20 mA is 435 ohms without explosion protection. The ABB V18345-2020521001 includes a digital input for control. The control voltage is 24V DC with a 12-30V DC range.

Pneumatic Output Specifications

The output range spans 0 to 6 bar (0 to 90 psi). Air capacity reaches 5.0 kg/h at 1.4 bar supply pressure. At 6 bar supply pressure, air capacity is 13 kg/h. The output function works for single or double acting actuators. Air vents from the actuator during normal operation. The actuator blocks in case of electrical power failure.

Travel and Shut-Off Values

The shut-off values are configurable. End position 0% ranges from 0 to 45%. End position 100% ranges from 55 to 100%. For rotary actuators, the used angle range is 25 to 120 degrees. An optional 270 degree range is available. For linear actuators, the used range is 25 to 60 degrees.

Installation Guidelines for the V18345-2020521001

Mount the ABB V18345-2020521001 on linear or rotary actuators. Use clean, dry instrument air for supply. Configure the shut-off values for your specific actuator. Set the angle of rotation based on your actuator type. Connect HART communication through the FSK module. Use the mechanical indicator for local position verification.

Package Contents

• One (1) ABB V18345-2020521001 TZIDC electro-pneumatic positioner

• One (1) plug-in analog position feedback module (4-20 mA)

• Mounting kit and configuration manual

Common FAQs for the V18345-2020521001

1. Does the V18345-2020521001 support HART communication?
Yes, the ABB V18345-2020521001 includes an FSK module for HART communication. This allows digital configuration and diagnostics.

2. What is the fail-safe mode on this positioner?
The ABB V18345-2020521001 has a double acting fail freeze function. The actuator stays in its last position when electrical power fails.

3. What is the enclosure protection rating?
The ABB V18345-2020521001 has an IP65 (NEMA 4X) aluminum case. It also includes a mechanical position indicator for local viewing.

4. What thread types are used for connections?
The ABB V18345-2020521001 uses 1/2-14 NPT for cable connection. The air pipe connection uses 1/4-18 NPT thread.

5. What is the travel range for rotary actuators?
The ABB V18345-2020521001 uses 25 to 120 degrees for rotary actuators. An optional 270 degree range is also available.

Why Choose the ABB V18345-2020521001?

This TZIDC electro-pneumatic positioner delivers precise double acting valve control. The HART communication enables digital integration with control systems. The mechanical position indicator provides local visual feedback. The IP65 aluminum case withstands harsh environments. Order the ABB V18345-2020521001 today for advanced valve positioning with HART.