Month: September 2025

Additional instructions for

IEC 61508 compliant devices

from HW Rev. 05.xx

Introduction

Safety Manual for TZIDC / TZIDC-200 digital

Positioner.

The TZIDC / TZIDC-200 is an intelligent digital

positioner for communication via HART within the

positioner product range.

Application area

The TZIDC is an electronically configurable 2-wire 4 to 20 mA valve positioner with HART® communication capabilities designed for

mounting on pneumatic linear or rotary actuators.

The TZIDC-200 is a variant designed with a flameproof enclosure as explosion protection concept.

The integrated I/P module with subsequent pneumatic amplifier is used to control the attached pneumatic actuator.

The SIL Safety Function is intended to open or close actuator/valves assemblies as emergency application.

By providing 0 mA as control/setpoint signal the positioner depressurizes the fail-safe actuator which return spring moves the valve

to a predefined, safe end position (either OPEN or CLOSED).

Operating parameters

The following operating parameters can be set manually if required:

Setpoint signal

0 … 100 % freely selectable for split-range operation

For 4 … 20 mA and HART version:

— Signal min. 4 mA, max. signal 20 mA (0 … 100%)

— Min. range 20 % (3.2 mA)

— Recommended range > 50 % (8.0 mA)

Action (setpoint signal)

Increasing:

Position value 0 … 100 % = direction 0 … 100 %

Decreasing:

Setpoint signal 100 … 0% = direction 0 … 100%

Characteristic curve (travel = f {setpoint signal})

Linear, equal percentage 1:25 or 1:50 or 25:1 or 50:1 or freely

configurable with 20 reference points.

Travel limit

The positioning travel, i.e. the stroke or angle of rotation, can

be reduced as required within the full range of 0 … 100 %,

provided that a minimum value of 20% is observed.

Device parameters

General remarks

Microprocessor-based position control in the positioner

optimizes control. The positioner features high-precision

control functions and high operational reliability. Due to their

elaborate structure and easy accessibility, the device

parameters can be quickly adapted to the respective application.

The total range of parameters includes:

— Operating parameters

— Adjustment parameters

— Monitoring parameters

— Diagnostics parameters

— Maintenance parameters

Operating parameters

The following operating parameters can be set manually if required:

Setpoint signal

0 … 100 % freely selectable for split-range operation

For 4 … 20 mA and HART version:

— Signal min. 4 mA, max. signal 20 mA (0 … 100%)

— Min. range 20 % (3.2 mA)

— Recommended range > 50 % (8.0 mA)

Action (setpoint signal)

Increasing:

Position value 0 … 100 % = direction 0 … 100 %

Decreasing:

Setpoint signal 100 … 0% = direction 0 … 100%

Characteristic curve (travel = f {setpoint signal})

Linear, equal percentage 1:25 or 1:50 or 25:1 or 50:1 or freely

configurable with 20 reference points.

“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.

Change from two to one column

“Fail-freeze” function

If the electrical supply power fails, the positioner output 1 (and

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

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

air supply power fails, the positioner depressurizes the actuator.

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

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 single

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

Change from two to one column

“Fail-freeze” function

If the electrical supply power fails, the positioner output 1 (and

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

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

air supply power fails, the positioner depressurizes the actuator.

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

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 single

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

For highly precise and reliable valve

positioning in all industries

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

Change from one to two columns

Monitoring of process parameters

— Numerous diagnostic functions available

HART-protocol

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 general purpose drives

ABB general purpose drives are simple to

buy, install, configure and use, saving

considerable time. They are widely available

through ABB channel partners. The drives

have common user and process interfaces

with fieldbuses, common software tools for

sizing, commissioning, maintenance and

common spare parts.

Applications

ABB general purpose drives can be used in a

wide range of industries. Typical applications

include pump, fan and constant torque use,

such as conveyors. ABB general purpose drives

are ideal in those situations where there is

a need for simplicity to install, commission

and use and where customizing or special

product engineering is not required.

Highlights

• FlashDrop tool

• Intuitive use with assistant control panel

• Swinging choke for superior

harmonic reduction

• Vector control

• Coated boards for harsh environments

• Built-in category C2 EMC filter

(1st environment) as standard

• Flexible fieldbus system with built-in

Modbus and numerous internally

mountable fieldbus adapters

• UL, cUL, CE, C-Tick and GOST R approved

• RoHS compliant