SI‑AT‑A22

About this documentation

• Read this documentation before initial operation or use. This is a prerequisite for safe, trouble-free handling and use of the product.
  
• Observe the safety instructions and warnings in this documentation and on the product.
  
• Always keep the operating instructions with the product and make sure that the operating instructions are with the product when it is given to other persons.
  

Explanation of symbols used

Warnings

Warnings alert persons to hazards that occur when handling or using the product. The following signal words are used:

Symbols in the documentation

The following symbols are used in this document:

	Read the operating instructions before use.
	Instructions for use and other useful information
	Dealing with recyclable materials
	Do not dispose of electric equipment and batteries as household waste

Symbols in the illustrations

The following symbols are used in illustrations:

	These numbers refer to the corresponding illustrations found at the beginning of these operating instructions
	The numbering reflects the sequence of operations shown in the illustrations and may deviate from the steps described in the text
	Item reference numbers are used in the overview illustrations and refer to the numbers used in the product overview section
	This symbol is intended to draw special attention to certain points when handling the product.

Product-dependent symbols

Symbols on the product

The following symbols are used on the product:

Direct current (DC)

Product information

products are designed for professional users and only trained, authorized personnel are permitted to operate, service and maintain the products. This personnel must be specifically informed about the possible hazards. The product and its ancillary equipment can present hazards if used incorrectly by untrained personnel or if used not in accordance with the intended use.
The type designation and serial number are printed on the rating plate.

• Write down the serial number in the table below. You will be required to state the product details when contacting Hilti Service or your local Hilti organization to inquire about the product.
  Product information

  Type	SI‑AT‑A22
  Generation	01
  Serial no.

Safety precautions

• Observe the safety precautions in the operating instructions for the wrench.
  

Adaptive torque module

1. Control panel buttons
   
2. Liquid crystal display
   
3. Indicator LEDs
   
4. Barcode scanner
   
5. Release button
   
6. USB port
   
7. USB port cover (shown open in the illustration)
   

Control panel buttons

1. OK button
   
2. Left arrow button
   
3. Right arrow button
   
4. Lock button
   
5. Scan button
   

Intended use

The product described is an electronic module that can be used with Hilti impact wrenches of the types SI… …AT‑A22 ("…" = any character) to tighten threaded fasteners under controlled conditions, thereby safeguarding the quality of the bolted connection. A record of the work carried out is saved in the module and can be read out, for documentation purposes, using the AT Documentation Software PC application.

It is not possible to set a torque with this module!

• Use only Hilti lithium‑ion batteries of the B 22 series with this product.

• Use only Hilti -approved battery chargers to charge these batteries. More information is available from your Hilti Store or from www.hilti.group

• Use only the impact sockets described in the operating instructions of the relevant product to tighten Hlti fasteners.

Possible misuse

This product is not suitable for Hilti fasteners in nuclear power plants!

Indicator LEDs

The LEDs on each side of the module indicate the following:

Status	Meaning
The LEDs show green.	When scanning: the barcode or QR code has been recognized. When tightening, after the impact wrench has switched off automatically: the tightening operation was completed successfully.
The LEDs flash red.	When scanning: the barcode or QR code was not recognized. When tightening, after the impact wrench switches off: The threaded fastener could not be tightened in accordance with the selected settings. The reason for this could be, for example, that the impact wrench was switched off manually before the correct torque was achieved.
The LEDs flash yellow.	The module detected that the threaded fastener had been tightened and subsequently slackened. Consequently, the threaded fastener has been retightened in accordance with defined parameters for retightening, and the tightening operation has been completed successfully.

Buzzer

The buzzer in the adaptive torque module emits the following signal tones as audible feedback:

• Long buzz: Confirmation signal (OK / operation completed successfully)
  
• 2 short buzzes, the LEDs flash yellow: Warning 1 (OK or, as applicable, not OK / repeat tightening)
  
• 4 short buzzes, the LEDs flash red: Warning 2 (not OK / operation aborted)
  

USB connection

The USB port can be used to connect the adaptive torque module to a PC. When this connection is made, the AT Documentation Software offers a range of functions, including:

• Adding new data records for new fasteners
  
• Changing / updating existing data records
  
• Deactivating / activating the documentation function
  
• Loading the log from the documentation function
  
• Setting the clock in the torque module
  

Items supplied

Adaptive torque module, operating instructions, quick-start guide, USB cable.
Other system products approved for use with this product can be found at your local Hilti Store or at: www.hilti.group

Inserting the adaptive torque module

• Push the torque module on to the impact wrench from the rear until it engages with an audible click.
  

Inserting the battery

• Push the battery on to the torque module from the rear until it engages with an audible click.
  

Switching on and off

Switching on the torque module

Conditions : The torque module is switched off, the display is blank.

1. Set the forward/reverse switch on the impact wrench to the "forward" position.
   
2. Short-press the control switch on the impact wrench.
   
   • The display lights up and briefly shows the start screen.
     
   • As a function check the LEDs briefly show red and yellow, before turning green. An acoustic signal sounds.
     
   • The last operating mode selected appears inside a selection frame on the display.
     
   • If the display shows a fault:
     
     • Refer to the "Troubleshooting”" section for information about possible causes of error messages and the steps to be taken to rectify the problem.
       
3. Press the lock button.
   
   • The torque module is now locked and the impact wrench is ready for use.
     

Switching off the torque module

The adaptive torque module switches itself off automatically:

• when the impact wrench switches off automatically after a long idle period
  
• when the battery is removed
  
• when a USB connector is unplugged, interrupting the USB connection between the torque module and the PC.
  

Basic operation

Unlocking the moduleThe adaptive torque module has to be unlocked before changes can be made to the settings.

• To unlock the adaptive torque module, press the   lock button and hold it down for at least 1 second.
  
• In the display a selection frame appears around the last previously shown type of fastener and the last previously shown operating mode.
  
• The torque module is unlocked and in setting mode. The impact wrench is deactivated.
  

NavigationWhen the selection frame and two or more elements (options, parameters) are visible in the display, you can move the selection frame by pressing the arrow buttons and .
Selecting options / changing parametersWhen the torque module is unlocked, you can change options or parameters as described below.

• Position the selection frame in the display on the element (option / parameter) you want to change.
  
• Press the OK button.
  
• A black background appears behind the element.
  
• Use the arrow buttons to select the setting you want.
  
• Press the OK button to accept the setting.
  
• The element reappears surrounded by the selection frame.
  

Locking the moduleWhen you have made all your changes you have to relock the adaptive torque module.

• Press the lock button .
  
• The selection frame disappears. Your operating parameters settings have now been saved and cannot be changed accidentally.
  
• The adaptive torque module is locked and the impact wrench is reactivated.
  

Basic settings

Calling up the "Basic settings" menu

1. If it is locked, unlock the torque module by pressing the lock button and holding it down for at least 1 second.
   
2. Press the OK button and hold it down for at least 1 second.
   
   • The "Basic settings" menu appears on the display.
     

Selecting functions from the basic settings menu

1. Use the arrow buttons to move the selection frame to the symbol for the desired function.
   Functions in the "Basic settings" menu

   Symbol	Function
   	Show the date and time set in the torque module's clock The AT Documentation Software has to be used to set the clock.
   	Show the remaining time / period of use until servicing of the impact wrench is due
   	Show the percentage of memory used in the torque module When the reading reaches 100%, the oldest data will be overwritten. You can use the AT Documentation Software to export the logged data and clear the torque module's memory.
   	Show the version of the software installed in the torque module
   	Exit the "Basic settings" menu

2. Press the OK button.
   

Display showing maintenance status / remaining period of use

After activation of the symbol in the basic settings menu the remaining period of use of the impact wrench until the next service is shown in the following display screens.
Display icons for maintenance status of the impact wrench

Display	Meaning
	The impact wrench is in good condition, no maintenance required in the foreseeable future.
	Maintenance of the impact wrench will soon be due. The segments in the rectangle on the right in the display indicate residual usage period.
	Maintenance of the impact wrench must be carried out immediately. This warning appears automatically when the residual usage period expires. The "Adaptive" and "Tightening" operating modes can no longer be selected.

Leaving the basic settings menu

1. Move the selection frame to the symbol.
   
2. Press the OK button.
   
   • The last previously shown operating mode will be displayed.
     

Operating modes

Adaptive operation

In "Adaptive" operating mode, the adaptive torque module regulates the tightening of the selected type of fastener. The tightening parameters from the most recently installed software update are used. Product designations and tightening parameters can change, so it essential to ensure that the software version installed in the torque module is always up to date.

• When the "Adaptive" operating mode is selected, the impact wrench's "AT" torque indicator lights up.
  
• The switch for selecting the operating stage is not active. But you can use the control switch to turn the impact wrench ON and OFF.
  Follow the operating instructions for your impact wrench.
  

Parameters in adaptive operating mode

1. Type of fastener (short name of the fastener)
   
2. Material / material grade / product details
   
3. Diameter (optional)
   

The illustration shows the layout of the operating parameters on the display.
Type of fastenerParameters for various types of fastener are saved ex-works in the torque module.
The fastener shown must correspond to the fastener used.
Further information can be found in the quick-start guide of the SI-AT-A22 and in the operating instructions of the product you use.

"Tightening" operating mode

In this operating mode a total of 30 torque settings are available. The setting to be selected for a particular type of fastener depends on the diameter of the fastener and the specified torque. The setting has to be determined step by step on the basis of these data.
For the "Tightening" operating mode, the display shows the following:

The number to the right of the threaded-fastener symbol shows the selected setting.

Determining the required setting for the "Tightening" operating mode

1. ATTENTION: Before starting to tighten a threaded fastener, always check that the mating faces of the components to be joined are seated flat against each other and that the nut has been screwed down until it is seated against the component.
   
2. Use a low setting for initial tightening of the fastener.
   
   • Start the step-by-step process with as low a setting as possible, to avoid the possibility of overtightening and damaging the fastener.
     
3. Use a calibrated torque wrench to check the torque applied to the fastener.
   
   For repeatable torquing of two or more identical fasteners, make sure that all torquing conditions remain unchanged. A change in torquing conditions can necessitate a change to a different stage.
   
   Result 1 / 3The specified tightening torque of the fastener to be tightened was not achieved.
   
   • Back off the fastener and set the torque module to a higher stage.
     
   • Tighten the fastener with the new stage setting and repeat this test step.
     
   Result 2 / 3The specified tightening torque of the fastener to be tightened was exceeded.
   
   • Back off the fastener and set the torque module to a lower stage.
     
   • Tighten the fastener with the new stage setting and repeat this test step.
     
   Result 3 / 3The fastener was tightened to the specified tightening torque.
   This stage setting is correct for this fastener.
   

"Unregulated" operating mode

In this operating mode the adaptive torque module is deactivated. The impact wrench works as though the adaptive torque module were not fitted to the tool. The adaptive torque module therefore does not have to be actually removed when it is not needed for short periods of use.
In the "Unregulated" operating mode the display shows the following:

Setting the operating mode

There are 2 ways of setting the operating mode to suit the type of fastener:

• Scan the barcode or QR code on the packaging of the Hilti product you are going to tighten.
  
• Manual adjustment using the buttons on the torque module
  

Scanning the barcode or QR codeIf a barcode or a QR code is available for the Hilti product to be tightened, the operating mode can be set correctly for the product quickly and easily by scanning the code.

• Set the operating mode by scanning the barcode or QR code.
  

Manual adjustmentIf no barcode or QR code is available for the product to be tightened, the operating mode can be set by using the buttons on the torque module.

• Select the operating mode with the control panel buttons.
  

Setting the operating mode with the control panel buttons

1. Unlock the torque module.
   
2. Use the arrow buttons to move the selection frame, as necessary, to the option you want to change.
   
3. Press the OK button.
   
   • A black background appears behind the option you selected.
     
4. Use the arrow buttons to select the desired setting.
   
5. Press the OK button.
   
   • The selected setting appears in the selection frame.
     
6. Repeat the last 3 steps as necessary to make other changes.
   
7. Lock the torque module.
   

Setting the operating mode by scanning the barcode or QR code

1. Unlock the torque module.
   
2. Press the "Scan" button.
   
   • The scanner is activated and the symbol appears on the display to indicate that the scanner is ready.
     

3. Hold the module facing the barcode or QR code at a distance of approx. 15 centimeters (6″), so that the code is inside the frame projected by the scanner.
   
   • The LEDs show green.
     
   • The confirmation tone sounds.
     
   • The operating mode for the product to be tightened appears on the display.
     
   • The LEDs flash red.
     
   • The warning tone sounds.
     
   •   appears on the display (code could not be read or was not recognized).
     
     • Press the "Scan" button and scan the code again.
       
       Operating parameters for the product to be tightened might not yet be available in the torque module's memory. If the product is SI-AT-compatible, you can scan the QR code of the corresponding product in the SI-AT-A22 operating instructions. In this way you can write the operating parameters into the memory of the SI-AT module. The operating parameters for the product can also be uploaded to the torque module via USB with the AT Documentation Software . Regularly check for updates to the software installed in the torque module in order to ensure that the latest parameters are always applied.
       

4. Lock the torque module.
   

Tightening the threaded fastener in "Adaptive" operating mode

1. Select the "Adaptive" operating mode.
   
2. Set the forward/reverse switch to the "Forward" position.
   
3. Install a suitable accessory tool on the impact wrench and engage the product to be tightened.
   
4. Press the control switch and hold it down until the torque module returns one of the following feedback signals:
   

Result 1 / 4

• The symbol indicating "Tightening completed successfully" is displayed.
  

• The LEDs show green.
  

• The confirmation tone sounds.
  

The fastener was tightened correctly. Proceed with the next fastener of the same type.

Result 2 / 4

• The symbol indicating "Retightening completed successfully" is displayed.
  

• The LEDs flash yellow.
  

• The warning tone sounds.
  

A threaded fastener that had been tightened and subsequently slackened has been re-tightened. INFO:  If the fastener had not been correctly tightened beforehand, use a calibrated torque wrench to check and, if necessary, tighten to the correct tightening torque.

Result 3 / 4

• The symbols indicating "Battery voltage too low" are displayed.
  

• The LEDs flash red.
  

The battery does not have enough power left for tightening the next fastener.

• Press the OK button to confirm the message.
  

• Insert a charged battery.
  

Result 4 / 4

• The symbols indicating "Tightening not completed correctly" are displayed.
  

• The LEDs flash red.
  

• The warning tone sounds.
  

• Use a calibrated torque wrench to apply the correct tightening torque to the fastener.
  

Tightening the threaded fastener in "Tightening" operating mode

1. Select the "Tightening" operating mode.
   
2. Determine the tightening setting for the threaded fastener to be tightened and select this setting.
   
3. Set the forward/reverse switch to the "Forward" position.
   
4. Install a suitable accessory tool on the impact wrench and engage the product to be tightened.
   
5. Press the control switch and hold it down until the torque module returns one of the following feedback signals:
   

Result 1 / 2

• The symbol indicating "Tightening completed successfully" is displayed.
  

• The LEDs show green.
  

• The confirmation tone sounds.
  

The fastener was tightened correctly. You can continue directly to the next fastener of the same type.

Result 2 / 2

• The symbols indicating "Tightening not completed correctly" are displayed.
  

• The LEDs flash red.
  

• The warning tone sounds.
  

• Use a calibrated torque wrench to apply the correct tightening torque to the fastener.
  

Checking fastener

All Hilti products are subject to a process of constant updating, which means that products not described in this documentation might also be supported by the SI-AT module. Keep the software and the operating instructions up to date at all times.
Other system products approved for use with this product, the latest operating instructions and instructions for testing can be found online at: www.hilti.group | USA: www.hilti.com .

Checking the fasteners of stud anchors

• Use a calibrated torque wrench to apply additional torque to the nut of the stud anchor. In this process, observe the angle through which the fastening element can be turned in the tightening direction.
  Result 1 / 2The nut of the stud anchor was not turned further than through the specified maximum angle of rotation (< 360 °).
  The fastener was tightened correctly.
  Result 2 / 2The nut of the stud anchor was turned further than the specified maximum angle of rotation (> 360 °).
  The fastener was not tightened correctly. The threaded fasteners tightened since the previous check are to be regarded as faulty and must be checked. Have the impact wrench checked by Hilti Service.
  

Checking security of the fastener for installation systems

• Use a calibrated torque wrench to apply additional torque to the fastener. In this process, observe the angle through which the fastening element can be turned in the tightening direction.
  Result 1 / 2The fastener was not turned further than through the specified maximum angle of rotation (< 180 °).
  The fastener has been tightened correctly.
  Result 2 / 2The fastener was turned further than the specified maximum angle of rotation (> 180 °).
  The threaded fastener has not been installed correctly. The threaded fasteners tightened since the previous check are to be regarded as faulty and must be checked. Have the impact wrench checked by Hilti Service.
  

Checking threaded fasteners tightened in the "Tightening" operating mode

• At regular intervals, using a calibrated torque wrench and proceeding in accordance with company regulations or quality specifications, check that specified tightening torque has been achieved.
  

Removing the torque module

1. Remove the battery.
   
2. Press and hold down the release button of the torque module.
   
3. Pull the torque module to the rear and off the impact wrench.
   

Connecting the torque module to a PC

1. Remove the torque module.
   
2. Open the sliding cover on the underside of the torque module.
   
   • The USB port is accessible.
     
3. Plug the connector of the USB cable (type B, USB 2.0) into the USB port of the torque module.
   

4. Plug the other connector of the USB cable (type A) into the PC.
   
   • The torque module is now powered off the PC. The USB logo appears on the module's display.
     
   After unplugging the USB cable from the torque module, close the cover over the USB port to protect it from dirt and dust.