Yokota YETC-ER System Impulse Tool Controller

Angle-monitoring system impulse wrench controller

The Yokota EC tightening system consists of the YETC-ER control unit, TKa impulse wrench, solenoid valve for compressed air control and other optional system components.

In order to be able to statistically evaluate and document safety-relevant bolt joints of category A and, of course, to tighten them with the correct pre-tensioning force, Yokota has equipped the impulse wrenches with an integrated measuring transducer. In connection with the YETC-(E)R control unit, the torque can be controlled, the angle of rotation monitored and, of course, recorded. The number of pulses, which is also monitored, serves as a control variable. The exact parameterisation for individual tightening situations (soft – hard) is possible.

The Yokota control unit YETC-ER has been specially developed to meet the requirements of a process-safe system. All bolted joints are measured, evaluated, counted and stored in the control unit and/or workplace computer. The YETC-ER controller offers comprehensive programming options for individual adjustment to the bolting parameters. The improved electronics enable even more accurate and faster torque calculations. 

The programmable monitoring of bolt groups allows changing from group to group without operating the control unit. Control by external signals is also possible, e.g. by socket spanner change box. Thus, the Yokota control unit YETC-ER fully supports the integration into a Poka-Yoke system: accept zero faults, produce zero faults, pass on zero faults.

The YETC-ER is available in various equipment versions. Several input/output relays also enable a variety of additional uses, such as integration into the production line, signal lights, etc.  Thus, the modular and expandable system can be individually configured and installed as required. Optionally, the control unit is also available in a network-compatible version (LAN version).