7958510 ABB TZID-C I/P-module Exia Single Act. Safe

7958510 is an ABB TZIDC I/P module configured for single-acting actuator applications with fail-safe behavior. It is a replaceable pneumatic control component used in ABB TZIDC digital positioners and is identified in ABB spare-parts documentation as an Exia I/P module.

 

The module belongs to the pneumatic section of the positioner. In the TZIDC architecture, the I/P stage converts the electrical control signal into a pneumatic output that operates the connected actuator. ABB lists 7958510 specifically for the single-acting, fail-safe configuration.

 

 

 

Item	Details
Brand	ABB
Part Number	7958510
Product Description	I/P-module TZID-C, Exia, single acting, fail safe
Module Type	I/P Module
Associated Positioners	TZIDC, TZIDC-110, TZIDC-120
Actuator Configuration	Single Acting
Fail Position	Fail Safe
Ex Version	Exia
Included Parts	O-rings and screws
ABB Spare Part CID	9AAC100009
Approx. Module Weight	0.840 kg

 

 

Within the TZIDC positioner, the I/P module forms the interface between the electrical control section and the pneumatic actuator circuit.

 

ABB describes the TZIDC as an electronically configurable positioner for pneumatic linear and rotary actuators. Its pneumatic system uses the I/P module together with a pneumatic amplifier to control the actuator through the corresponding pneumatic output.

 

For 7958510, the configuration is specifically:

 

• Single Acting - Fail Safe - Exia

 

This configuration is important because ABB also supplies separate I/P modules for single-acting fail-freeze operation and for double-acting actuators.

 

 

ABB's spare-parts list identifies four original TZIDC I/P module configurations:

 

ABB Part Number	Actuator Type	Fail Behavior
7958510	Single Acting	Fail Safe
7958511	Single Acting	Fail Freeze
7958512	Double Acting	Fail Safe
7958513	Double Acting	Fail Freeze

 

Therefore, the actuator configuration and required fail behavior should be confirmed before selecting a replacement I/P module. The four part numbers are not interchangeable simply because they belong to the same TZIDC family.

 

 

The "fail safe" designation is a defining characteristic of 7958510.

 

ABB explains that the TZIDC pneumatic system can be configured for either single-acting or double-acting actuators and for either fail-safe or fail-freeze behavior. In the fail-safe arrangement, loss of the relevant control signal causes the pneumatic system to depressurize the actuator so that the spring-return mechanism moves the valve to its predefined safe position.

 

ABB's safety documentation further identifies the single-acting, fail-safe version as the configuration used for its described TZIDC SIL safety function with a pneumatic fail-safe actuator. The actual safety integrity capability remains dependent on the complete certified device configuration and system architecture.

 

 

 

7958510 is identified by ABB as an Exia I/P module. This makes the exact module version important when replacing a component installed in an explosion-protected TZIDC system.

 

ABB's current I/P module conversion documentation provides a compatibility matrix covering TZIDC, TZIDC-110 and TZIDC-120 units, different software revisions, manufacturing periods, and explosion-protection versions. The matrix distinguishes the original 7958510-series modules from the newer 3KXS360018L8510-series modules.

 

 

ABB's current lifecycle documentation lists:

 

• 7958510 - I/P-module TZIDC, single acting / fail safe

 

and also lists the newer:

 

• 3KXS360018L8510 - I/P-module TZIDC, single acting / fail safe

 

The newer part is not automatically interchangeable with every older installation. ABB's compatibility document states that use depends on the device type, software revision, manufacturing date and Ex version. For some newer TZIDC Ex configurations, the original 7958510 is marked as prohibited, while the newer 3KXS360018L8510 version is permitted.

 

This is an important point when sourcing 7958510 for an existing positioner: the complete device identification should be checked before replacement, especially where explosion protection approval is involved.

 

 

ABB's original spare-parts list states that the 7958510 I/P module includes O-rings and screws.

 

These items are therefore associated with the replacement module and should not be confused with separate positioner electronics or mechanical feedback components.

 

 

 

Characteristic	7958510
Component	I/P Module
Positioner Family	TZIDC
Ex Designation	Exia
Actuator	Single Acting
Fail Behavior	Fail Safe
O-rings	Included
Screws	Included
Spare Part CID	9AAC100009
Approx. Weight	0.840 kg

 

The approximately 0.840 kg weight is the value given by ABB's TZIDC/TZIDC-110/TZIDC-120 spare-parts list for the 7958510 I/P module.

 

 

When identifying 7958510 for an existing ABB positioner, check the following items together:

 

• ABB part number: 7958510
• Positioner type: TZIDC / TZIDC-110 / TZIDC-120
• Actuator type: single acting
• Required fail behavior: fail safe
• Explosion protection version
• Positioner software revision
• Device manufacturing date
• Existing I/P module version

 

For older installations, these details are particularly important because ABB has introduced the 3KXS360018L8510 replacement version and its compatibility depends on the installed positioner configuration.

 

 

7958510
7958510 ABB
ABB 7958510
TZIDC 7958510
TZID-C I/P Module
TZIDC I/P Module
TZIDC IP Module
TZIDC I/P Converter
ABB TZIDC I/P Module
Exia I/P Module
Single Acting I/P Module
Single Acting Fail Safe I/P Module
TZIDC Single Acting Fail Safe
TZIDC Exia I/P Module
TZIDC Pneumatic Module
ABB Positioner I/P Module
3KXS360018L8510 replacement
TZIDC I/P-module 7958510

 

 

What is ABB 7958510?
7958510 is an ABB TZIDC I/P module for single-acting actuator applications with fail-safe behavior and Exia protection.

 

Which ABB positioners use 7958510?
ABB's spare-parts documentation identifies 7958510 for TZIDC, TZIDC-110 and TZIDC-120 positioners.

 

Is 7958510 for single-acting or double-acting actuators?
7958510 is specifically the single-acting version. ABB uses 7958512 for the corresponding double-acting fail-safe configuration.

 

What does fail safe mean for this I/P module?
In the relevant TZIDC pneumatic arrangement, fail-safe behavior causes the actuator to move toward its predefined safe position when the control signal is lost, using the spring-return mechanism of the compatible fail-safe actuator.

 

Is 7958510 an Exia component?
Yes. ABB identifies 7958510 as an Exia I/P module.

 

Are O-rings and screws included with 7958510?
Yes. ABB's spare-parts list explicitly states that the I/P module includes O-rings and screws.

 

What is the weight of 7958510?
ABB's spare-parts documentation lists an approximate weight of 0.840 kg.

 

Is 7958510 still the latest I/P module version?
ABB currently also lists 3KXS360018L8510 as the newer version of the TZIDC single-acting fail-safe I/P module. The correct replacement depends on the specific TZIDC device, software revision, manufacturing period and Ex configuration.

 

Can 3KXS360018L8510 always replace 7958510?
It should not be assumed without checking the ABB compatibility matrix. ABB specifies different permitted combinations according to device type, software revision, manufacturing date and explosion-protection version.

 

What is the difference between 7958510 and 7958511?
Both are for single-acting TZIDC applications, but 7958510 is the fail-safe version while 7958511 is the fail-freeze version.

 

What is the difference between 7958510 and 7958512?
7958510 is designed for single-acting fail-safe applications, whereas 7958512 is the double-acting fail-safe version.

 

 

For replacement identification, use 7958510 together with the full description TZID-C I/P-module, Exia, single acting, fail safe.

 

For an existing TZIDC, TZIDC-110 or TZIDC-120 installation, the positioner type, software revision, production date and Ex version should also be checked before selecting between the original 7958510 and ABB's newer 3KXS360018L8510 version. This is especially important for explosion-protected equipment because ABB explicitly identifies combinations that are no longer permitted for certain device versions.

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