# Tool LEDs

## The tool LEDs have the following features:

- The LED ring consists of a circle of radial gradient LEDs on the STRwrench handle. The LEDs behavior can be configured to provide specific output messages to the operator according to color and behavior.

- A result indicator uses the LED ring to output the status of a tightening result to the operator at the end of a tightening or loosening.

## Configure LEDs

1. Go to Configurations in the home menu and select Tool Configurations > Edit.

2. In the Tool LEDs category, select Edit.

3. Set the parameters as applicable.

## Tool LEDs Progression

The behavior of the radial gradient LEDs on the LED ring can be configured to communicate the progress of the tightening operation: three radial gradient LEDs turn green in sequence when the torque or angle values that correspond to three configured thresholds are reached. The thresholds are defined in percentage, and it is possible to configure on which value they must be calculated:

- For tightening strategies with torque set as control, the thresholds can be calculated either according to the Torque min value or to the Target Torque value defined for the operation.

- For tightening strategies with angle set as control, the thresholds can be calculated either according to the Angle min value or to the Target angle value defined for the operation.

Parameter | Description
--- | ---
Green LED Threshold | This parameter defines the method to calculate the three progress thresholds. Select one of the available options: Minimum Torque: thresholds are calculated according to the Torque min value or to the Angle min value set for the operation, depending on the tightening strategy in use. Target Torque: thresholds are calculated according to the Target torque value or to the Target angle value set for the operation, depending on the tightening strategy in use.
First threshold | Type at what percentage of the set Green LED Threshold value the first radial gradient LED must turn on.
Second threshold | Type at what percentage of the set Green LED Threshold value the second radial gradient LED must turn on.
Third threshold | Type at what percentage of the set Green LED Threshold value the third radial gradient LED must turn on.

The sum of the values set for First threshold, Second threshold and Third threshold must add up to 100%.

## Result Indicator

The result indicator configures how the tool LED ring behaves to indicate tightening results status and how long this indication lasts. A pre-configured pattern can be selected from a shortcut menu. This pattern can be a combination of tightening results.

Result indicator signals
Signal | Description
--- | ---
Red:high:yellow:low | If a production strategy is selected: LED ring turns red if the tightening result exceeds the upper limit value. LED ring turns yellow if the tightening result is below the lower limit value. If a quality control strategy is selected: LED ring turns red if the tightening result exceeds the upper limit value. LED ring turns yellow if the tightening result is below the lower limit value. LED ring turns yellow and a message appears on the EHMI if the residual torque is not detected.
Red:NOK:yellow:low | If a production strategy is selected: LED ring turns red if the tightening result exceeds the upper limit value. LED ring alternates yellow and red if the tightening result is below the lower limit value. If a quality control strategy is selected: LED ring turns red if the tightening result exceeds the upper limit value. LED ring alternates yellow and red if the tightening result is below the lower limit value. LED ring alternates yellow and green if the residual torque is not detected.
Red:NOK | LED ring turns red if the tightening result is outside the lower and upper limits values range (default behavior).

## Duration

Duration decides for how long the result indication stays on after the tightening is completed.

Use the switch to select one of the two options:

Parameter | Description
--- | ---
To next tightening | Result indication stays on until the next tightening is initiated (default behavior).
Time | Result indication stays on for the set duration after the tightening is completed. Default value: 5.0 s; value range: 0.1 s - 60.0 s.