
| TZIDC | V18345-1010261001 | Positioner | EXACT MATCH |
| Manufacturer | ABB |
| Complete order code | V18345-1010261001 |
| Base model | TZIDC intelligent configurable positioner |
| Housing / mounting | Painted aluminium; linear NAMUR or rotary VDI/VDE 3845 mounting |
| Input | 4 to 20 mA, two-wire |
| Explosion-protection code | Without hazardous-area approval in this configuration |
Positions a pneumatic control-valve actuator in response to a two-wire 4 to 20 mA command. The local indicator and operator panel support setup and status review.
This configuration uses a single-acting pneumatic output with fail-freeze behavior upon electrical power loss.
The order code includes an analog 4 to 20 mA position-feedback plug-in module, M20 x 1.5 cable entry and G 1/4 pneumatic connections.
| Input signal | 4 to 20 mA, two-wire |
| Electrical input rating | 30 V DC maximum |
| Pneumatic action | Single acting |
| Failure response | Fail freeze on loss of electrical power |
| Position feedback | Plug-in analog feedback module, 4 to 20 mA |
| Cable connection | M20 x 1.5 thread |
| Air connections | G 1/4 thread |
| Housing | Painted aluminium |
| Enclosure protection | IP65 / NEMA 4X |
| Actuator mounting | Linear per DIN/IEC 534 / NAMUR; rotary per VDI/VDE 3845 |
| Command | Control system 4–20 mA signal powers and commands the positioner |
| Control | Internal electronics compare demand with measured travel |
| Pneumatic output | I/P and pneumatic stage regulate actuator pressure |
| Feedback | Mechanical travel feedback closes the positioning loop; analog module retransmits position |
| MODEL | RELATIONSHIP | SELECTION POINT |
| V18345-1010261001 | 4–20 mA / single acting / analog feedback | This exact configured product |
| V18345-1010121001 | Different option-code combination | Do not infer interchangeability from the V18345 prefix |
| V18345-2010461001 | Different housing/options | Verify mounting, action, approvals and feedback |
| TZIDC-120 | Related positioner platform | Different product configuration and communication options |
| 01 | Confirm the complete order code, actuator type, mounting standard, travel or rotation, pneumatic action and failure requirement. |
| 02 | Mount rigidly and align the feedback linkage so the usable travel stays inside the permitted range without mechanical binding. |
| 03 | Use clean, dry, oil-free instrument air and verify G 1/4 connections for leakage. |
| 04 | Observe polarity and loop-voltage limits on the 4 to 20 mA two-wire input. |
| 05 | After mechanical and pneumatic work, perform commissioning and validate direction, end positions, alarms and analog feedback. |
| Q1 |
Does V18345-1010261001 include HART communication?
No HART option is encoded here; the input is the standard 4 to 20 mA two-wire version.
|
| Q2 |
What happens to V18345-1010261001 if electrical power is lost?
This configuration is single acting with fail-freeze behavior. The overall valve response also depends on actuator and process mechanics.
|
| Q3 |
Can V18345-1010261001 mount on both linear and rotary actuators?
Yes, with the correct mounting kit: DIN/IEC 534 / NAMUR for linear actuators or VDI/VDE 3845 for rotary actuators.
|
| Q4 |
Does V18345-1010261001 provide position retransmission?
Yes. Its code includes a plug-in analog position-feedback module with a 4 to 20 mA range.
|
| Q5 |
What must be matched when replacing V18345-1010261001?
Match every order-code position, actuator mounting, pneumatic action, fail behavior, threads, feedback module and area approval; the V18345 prefix alone is insufficient.
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