ABB V18345-1010261001 TZIDC Electro-Pneumatic Valve Positioner

V18345-1010261001 is a TZIDC electro-pneumatic positioner for modulating a pneumatic valve actuator from a two-wire 4–20 mA setpoint. Its specified single-acting output and separate analog position feedback suit applications that need both valve positioning and a position signal.

V18345-1010261001 has ABB case/mounting option 10: a varnished aluminium housing for linear actuators to DIN/IEC 534/NAMUR or rotary actuators to VDI/VDE 3845. Check the actuator linkage and travel against ABB's mounting instructions; the standard alone does not establish a direct fit for every valve.

V18345-1010261001 takes a two-wire 4–20 mA positioning setpoint through input option 1, which includes an LKS adapter connector. Feedback option 1 is a plug-in, separate two-wire 4–20 mA analog position signal; allocate and wire the command and feedback loops according to ABB's terminal diagram.

For V18345-1010261001, verify the M20 × 1.5 cable entry and G1/4 air connection, provide clean instrument air and the 4–20 mA setpoint, then check actuator movement and mechanical end positions. ABB's TZIDC instructions call for Autoadjust where the installed software supports it (version 2.XX or later), followed by a check of valve travel and feedback.

V18345-1010261001 uses ABB output option 2: single-acting, fail-freeze pneumatic action. On loss of electrical power, this option is specified to hold the actuator position rather than perform the different fail-safe action of output option 1; match that behavior to the valve's required power-loss response.

Not where HART communication is required: V18345-1010261001 uses input option 1, a 4–20 mA two-wire input with an LKS adapter connector. ABB lists input option 2 separately with an FSK module for HART. Compare the full order codes and the host's communication requirement before migration.

Confirm the complete V18345-1010261001 nameplate/order code, not only the V18345 family. ABB's option sequence identifies case 10 without a mechanical indicator, input 1 without HART FSK, no explosion protection (0), single-acting fail freeze (2), M20 × 1.5/G1/4 connections (6), analog feedback (1) and no mechanical digital-feedback kit (00). If Ex approval or another option is needed, select a separately verified code.