Atlas Copco Tensor STB Wireless Tightening Tool Deployment Guide

E620 tool blockage check connection (STB is associated with E601)

E623 safety current monitoring error: The torque sensor and current estimation are inconsistent and require repair

E624 battery malfunction: The battery has an internal fault and cannot be used anymore. Please contact for recycling

E721 tool internal error (LED board disconnected) needs to be sent for repair

E808 software exception: PF end may close unnecessary connections due to excessive external program subscriptions; STB software error needs to be repaired

Typical troubleshooting scenario:

Tool unable to connect: First, check if the Serial Port Adapter is powered and if the antenna is vertical; Attempt to re pair; If it still doesn't work, check if T290 of PF is set to IRC-B/IRC-W and restart PF.

Frequent communication interruptions: reduce metal barriers between tools and adapters; For IRC-W, check if the Wi Fi channel conflicts with other APs and switch channels.

Tightening result lost: Ensure that the tool memory is not full (up to 25 entries), if exceeded, the earliest result will be overwritten; After going offline, it will automatically upload when going back online.

Practical Cases and Best Practices

Case 1: In an assembly line of a bus factory, operators need to tighten multiple points around the body of the vehicle, and wire tools frequently break cables. Using 4 sets of Tensor STBs (IRC-B) in combination with PF4000. After initial installation, the tool frequently displays E551. On site investigation found that the Serial Port Adapter antenna was obstructed by a metal fence. After being moved to the upper bracket, communication became stable, and T276 was adjusted to Low to reduce transmission power and minimize interference with other devices.

Case 2: A powertrain factory adopts the IRC-W scheme and requires real-time data upload. After deployment, E558 appeared because the PF software version was W7.2 and the tool was the latest firmware. Upgrading PF to W7.5 is compatible.

Best practice recommendations:

It is best to complete the pairing operation before the first use of the tool and backup the configuration to RBU.

Set T271 to "Connected" and ensure that the blue light is on before each tightening to avoid failure to upload results due to communication loss.

Regularly check the number of battery cycles and replace spare parts in advance after reaching 400 cycles.

When using the standalone mode, it is necessary to upload cached data in a timely manner after the tool is re paired to avoid memory overflow.