TAC EM 5 Actuator requires replacement.

Issue

TAC EM 5 Actuator requires replacement.

Product Line

Field Devices

Environment

EM 5 EM5C EM5

Actuator

Cause

TAC EM 5 Actuator requires replacement

Resolution

The TAC EM5 Actuator is totally obsolete and no direct replacement is currently available.

Details of the TAC EM5 Actuator appear here.

The TAC EM5 Actuator was capable of use in control systems having alternative electrical wiring connections.

Alternative 1

Actuator electrical connections comprising 24 v a.c.power supply and 2-10 v dc / 4-20 mA dc positioning signal.

In instances where the positioning signal is 2-10 v dc the TAC EM5 Actuator may be replaced by the S-E MD10A - 24

Details of the S-E MD10A-24 Actuator may be viewed here.

N.B.

The S-E MD10A-24 should be checked for electrical compatibility with other control system devices that it is to be integrated with.

It is unlikely that it will be mechanically compatible with the other control system devices such as the Control Valve Body.

Arrangements may therefore need to be made for the design and manufacture of a suitable Linkage Kit.

 

Alternative 2

Actuator electrical connections comprising 24v a.c.power supply and 2-10 v dc / 4-20 mA positioning signal with 16v dc output.

In instances where the positioning signal is 2-10 v dc the TAC EM5 Actuator may be replaced by the S-E MD10A - 24

It should be noted however that no 16v dc output is available from the S-E MD10A - 24 and none can be connected.

A 16 v dc power supply should therefore be installed to provide power to any external Controllers or Auxiliary Units. 

 

 

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