The TZIDC is an electronically configurable positioner withcommunication capabilities designed for mounting to pneumatic linear or rotary 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.
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 apneumatic 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 set point, the 3/3-way valve is closed in center position to minimize the air consumption.
