Technical Profile: V18345-1010251001 TZIDC-120 Positioner
The V18345-1010251001 represents a high-performance, electronically configurable positioner within the ABB TZIDC-120 series. This specific configuration utilizes a two-wire 4-20 mA input signal and is housed in a robust IP65 aluminum casing. Engineered for precision control, the V18345-1010251001 features a single-acting “Fail Freeze” safety function, ensuring the actuator maintains its last position during electrical failure. With integrated analog position feedback and a high-resolution A/D converter, this intelligent device provides superior vibration resistance and seismic stability for demanding process industries.
V18345-1010251001 Configuration Breakdown
- V18345 — Series Base (TZIDC-120 Intelligent Positioner)
- ∟ 1 : Case (Aluminium, Varnished IP 65 / NEMA 4X)
- ∟ 0 : Reserved Fixed Code
- ∟ 1 : Input 4-20 mA (Two-wire with LKS adapter plug)
- ∟ 0 : Explosion Protection (None / General Purpose)
- ∟ 2 : Output/Safe Position (Single Acting, Fail Freeze)
- ∟ 5 : Connections (Thread M20 x 1.5 Cable / 1/4-18 NPT Air)
- ∟ 1 : Option Module (Analog Position Feedback 4-20 mA)
- ∟ 0 : Mechanical Kit (None)
- ∟ 0 : Reserved Fixed Code
- ∟ 1 : Design (Standard Varnish/Coding)
Core Performance Matrix
- Supply Pressure Range: 1.4 to 6 bar (20 to 90 psi)
- Ultra-Low Air Consumption: < 0.03 kg/h (Independent of supply pressure)
- Characteristic Curves: Linear, Equal Percentage (1:25/50), or 20-point custom curve
- Control Accuracy: Characteristic deviation ≤ 0.5% with > 4000 steps resolution
- Dynamic Response: 20 msec sample rate for high-speed loop updates
- Environmental Resilience: Meets DIN/IEC 68-3-3 Class III for strong seismic requirements
- Orientation Influence: No effect on calibration regardless of mounting angle
Oiltech Controls Limited’s Insight
- Application Scenarios: Ideal for chemical processing and power plants where precise flow modulation is critical.
- Device Synergy: Specifically designed for mounting on linear actuators (DIN/IEC 534) and rotary actuators (VDI/VDE 3845).
- Diagnostic Capabilities: The V18345-1010251001 includes an integrated operator panel for local configuration and real-time status monitoring.
- Safety Logic: The “Fail Freeze” (Code 2) output is a vital feature for processes where sudden valve movement would cause system instability.
- Service Advantage: Includes a 12-month functional warranty with express 24-48 hour dispatch via FedEx, UPS, or DHL.
Engineering FAQ: TZIDC-120 Selection
What is the primary benefit of the “Fail Freeze” option on this model?
In the event of an electrical signal loss, the positioner locks air in the actuator to maintain the valve’s last position.
Does mounting orientation affect the calibration of the V18345-1010251001?
No, this intelligent positioner features zero effect from orientation, allowing versatile installation in tight spaces.
How do I configure a custom flow characteristic for non-linear valves?
You can use the local operator panel to define up to 20 reference points, tailoring the travel to specific signal inputs.
Is the analog feedback module (Code 1) isolated from the input signal?
Yes, the plug-in feedback module provides an independent 4-20mA signal to your DCS for real-time verification.
Selection Guide: When should I choose the M20 x 1.5 thread over NPT?
This model (Code 5) uses M20 x 1.5 for cable entry; ensure your cable glands match this European standard for IP65 integrity.
Contact Information Inquiries: info@oiltechcontrols.com , +86 158 8020 0923
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