ABBElectro-Pneumatic Positioner TZIDC

Low operating cost 

Compact design 

Well-proven technology 

Robust and environmentally ruggedized 

Wide operating temperature range 

 -40 ... 85 °C (-40 ... 185 °F) 

Easy to commission, “single pushbutton” 

operating philosophy 

Mechanical position indicator 

ATEX, FM, CSA, GOST and IECEx approvals 

For SIL2 safety loops 

1 Description Pos: 3.2 /==== Wechsel ein- auf zweispaltig ==== @ 0mod_1130421847171_3101.doc @ 3828 

Wechsel ein-auf zweispaltig Pos: 3.3 /Technische Daten / Datenblatt/Aktorik/Stellungsregler/Allgemein/Kurzbeschreibung/Kurzbeschreibung @ 10mod_1173180169769_3101.doc @ 71118 

The TZIDC is an electronically configurable positioner with 

communication 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. 

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1.1 Pneumatics Pos: 3.5 /Technische Daten / Datenblatt/Aktorik/Stellungsregler/Allgemein/Kurzbeschreibung/Pneumatik @ 10mod_1173180645393_3101.doc @ 71139 a 

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 positioning 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 set point, the 3/3-way valve is closed in center 

position to minimize the air consumption. 

Four different pneumatics versions are available: for single-acting or 

double-acting actuators, each with “fail-safe” or “fail-freeze” function. 

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1.1.1 “Fail-safe” function 

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If the electrical power supply 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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1.1.2 “Fail-freeze” function 

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If the electrical power supply should fail, the positioner output 1 (and 

2, if applicable) is closed and the pneumatic actuator stops 

(“freezes”) the valve in the current position. If compressed air supply 

should fail, the positioner depressurizes the actuator. 

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1.2 Operation Pos: 3.12 /Technische Daten / Datenblatt/Aktorik/Stellungsregler/Allgemein/Kurzbeschreibung/Bedienung (Kommunikationsmöglichkeit) @ 10mod_1173184631054_3101.doc @ 71160 

The positioner has a built-in operating panel providing a 2-line LCD 

and 4 pushbuttons for optimal local configuration, commissioning and 

operational monitoring. 

Alternatively, the appropriate configuration program and the available 

communication option can be used. 

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1.3 Communication Pos: 3.14 /Technische Daten / Datenblatt/Aktorik/Stellungsregler/TZIDC / TZIDC-200/Kurzbeschreibung/Kommunikation @ 10mod_1176212225390_3101.doc @ 76893 

The standard TZIDC model has a local communication interface (LKS 

connector). Additionally, a “HART communication” option for 

communication via the 20 mA signal is available. Both 

communications are based on the HART Protocol. 

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1.4 Inputs and outputs Pos: 3.16 /Technische Daten / Datenblatt/Aktorik/Stellungsregler/TZIDC / TZIDC-200/Kurzbeschreibung/Ein-/Ausgänge @ 10mod_1176212290390_3101.doc @ 76914 

In addition to its input for the analog position set point the TZIDC 

positioner is equipped with a digital input which can be used to 

activate various protective functions in the device via the process 

control system. A digital output allows you to output collective alarms 

or fault messages. 

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