ABB 07CR41 1SBP260020R1001 Expansion module

Product parameter：

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

description of products

1 Description

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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

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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

Installation method：

2 Mounting versions

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2.1 To linear actuators in accordance with the

standard

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Lateral attachment is in accordance with DIN / IEC 534 (lateral

attachment to NAMUR). The required attachment kit is a complete

set of attachment material, but does not include the screwed pipe

connections and air pipes.

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2.2 To rotary actuators in accordance with the

standard

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This attachment is designed for mounting according to the standard

VDI/VDE 3845. The attachment kit consists of a console with

mounting screws for mounting on a rotary actuator. The adapter for

coupling the positioner feedback shaft to the actuator shaft has to be

ordered separately. Screwed pipe connections and air pipes have to

be provided on site.

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2.3 Integral mounting to control valves

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The TZIDC positioner featuring standard pneumatic action is also

suitable for integral mounting.

The required holes are found at the back of the device.

The benefit of this design is that the point for mechanical stroke

measurement is protected and that the positioner and actuator are

linked internally. No external tubing is required.

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2.4 Special actuator-specific mounting

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In addition to the mounting methods described above, there are

special actuator-specific attachments.

Please contact us for details.

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