ABB TZIDC-200 Digital Positioner V18348 Positioner
Overview
ABB TZIDC-200 Digital Positioner V18348 Positioner
Easy Set-Up
— Auto-adjust function
— Simple initialization
Easy handling
— ABB common look and feel
Control adaptive function
— Automatic adjustment of control parameters during
operation
High shock and vibration immunity
— Gearless sensor activation
Fail save and fail freeze function
— Selectable safe position of valve
Low air consumption
— Efficient I/P converter
Monitoring of process parameters
— Numerous diagnostic functions available
HART-protocol
ABB TZIDC-200 Digital Positioner V18348 Positioner
Global approvals for explosion protection
— ATEX
— IECEx
— FM, CSA
— EAC TR-CU-012
Wide temperature range
— -40 … 85 °C (-40 … 185 °F)
Applicable for nearly all actuators and valves
— Suitable for all pneumatic actuators
— Suitable for rotary and linear actuators
— Suitable for all actuator sizes
ABB TZIDC-200 Digital Positioner V18348 Positioner
Brief description
The TZIDC-200 is an electronically configurable positioner with communication capabilities designed for mounting to pneumatic linear or part-turn actuators. It features a small and compact design, a modular construction, and an excellent cost-performance ratio.
Fully automatic determination of the control parameters and adaptation to the final control element yield considerable time savings and an optimal control behavior.
Pneumatics
ABB TZIDC-200 Digital Positioner V18348 Positioner
An I/P module with subsequent pneumatic amplifier is used to control the pneumatic actuator. The well-proven I/P module
proportionally converts the permanent electrical setpoint signal from the CPU into a pneumatic signal used to adjust a 3/3-way valve.
The air flow for pressurizing or depressurizing the actuator is continuously adjusted. As a result, excellent control is achieved. When reaching the setpoint, the 3/3-way valve is closed in center position to minimize the air consumption.
Four different pneumatics versions are available: for singleacting or double-acting actuators, each with “fail-safe” or “failfreeze”function.
“Fail-safe” function
If the electrical supply power fails, the positioner output 1 is depressurized, and the pneumatic actuator’s return spring moves the valve to the defined safe position. In case of a double-acting actuator the second output 2 is additionally pressurized.
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