CN-SFT Safety control unit for category 3 and 4

Technopolymer

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Technical specifications

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Main specifications

Material

Polyamide-based (PA) technopolymer, grey colour.

Standard executions

Safety control unit for category 3 and 4.

  • CN-SFT.115: standard dimensions.
  • CN-SFT.46: reduced dimensions.

Contact blocks in the standard execution:

NO-NC: 1 NO contact + 1 NC contact.

NC-NC: 2 NC contacts.

General information

Features and applications

CN-SFT can be used in conjunction with the following Elesa products: ESC-SFT, CFSW, CFSQ, M.2000-SWM.

The CN-SFT safety control unit is able to control the status of two contacts (safety Reed magnetic sensors, emergency buttons, mechanical safety switches, safety interlocks for mobile guards): the output is activated by pressing and releasing the START button (reset) only if the NO contact is open and the NC contact is closed (NO-NC version) or only if the two NC contacts are closed (NC-NC version).

The switching of even just one input contact results in a safe situation, placing the safe outputs in an open state and preventing them from closing again, even after a new switching of the contact and pressing the START (reset) button.

CN-SFT.46 - Reduced dimensions 
Table of LEDs
FunctionLEDColourStatus
Power supplyPWRGreenon
Outputs 13-14 and 23-24 : OPENCH1 - CH2Green - Greenoff - off
Output 41-42 : OPEN
Output 41-54 : CLOSED
Outputs 13-14 and 23-24 : CLOSEDCH1 - CH2Green - Greenon - on
Output 41-42 : CLOSED
Output 41-54 : OPEN
UL CERTIFICATION REQUIREMENTS
Power supply (input)
Input terminalsVoltageMax. current
A1-A224Vac/dc220mA / 70mA
Auxiliary outputs (safety)
Output terminalsType of contactsGeneral or resistive usePilot Duty
13-14 / 23-24NO3A/240Vac Res1.4A/240Vac1A/24Vdc
Signalling outputs (signals)
Output terminalsType of contactsNominal values
41-42NO0.5A/24Vdc
41-54NC
Environmental valuesNotes on installation
Max. temperature surrounding air: 55°CUse only with copper (CU) conductor at 60°C minimum
Pollution degree: 2
Environmental designationTerminal tightening torque: 5-7 LbIn (0.56-0.79 Nm)
Open type equipment
Approved by ULE542642
CN-SFT.46 - Reduced dimensions 
CN-SFT.46 - Reduced dimensions 
Electrical connections

Model CN-SFT.115-2NC and model CN-SFT.46-2NC

NOTE: the contact that is normally closed when the guard is closed is considered the NC input.

CN-SFT.46 - Reduced dimensions 
CN-SFT.46 - Reduced dimensions 

Model CN-SFT.115-1NC+1NO and model CN-SFT.46-1NC+1NO

NOTE: the contact that is normally closed when the guard is closed is considered the NC input. The contact that is normally open when the door is closed is considered the NO input.

CN-SFT.46 - Reduced dimensions 
CN-SFT.46 - Reduced dimensions 
Elesa
Models all rights reserved in accordance with the law. Always mention the source when reproducing our drawings and photos.

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