WOODWARD 9907-149 Digital output module

When the shaft pitch is narrow because of the use of multiple spindles, gears, etc., inserted after the Nutrunner output shaft to correspond with the narrow space between shafts, the Nutrunner display value and the actual fastening torque may differ because of the inuence on gear efciency, pulsations, etc., Use of constant speed joints is recommended when the shaft pitch is to be reduced.When dry bushings, etc., are used for bearings downstream from the Nutrunner output shaft, torque is lost because of the dry bushing and it is to be feared that there will be a difference between the Nutrunner display value and the actual fastening torque may differ. Use of dry bushings should be avoided as much as possible.

Installation of Control Unit

Always connect the protective ground terminal of the control unit and the protective ground terminal of the control panel to prevent electric shock. Use one-point class 3 grounding (100 Ω or lower).Do not use the same power supply for control I/O control and electromagnetic contactors etc. This can cause erroneous operation and system errors because of noise.Leave a free space of 100 mm or more above the top and underneath the control unit and do not inhibit air circulation.For proper heat dissipation, it is recommended to install units with a space of at least 10 mm between units.

Caution for cabling

Wiring in a exible tube or wiring on a cable conveyor is recommended for the Nutrunners moving parts. To prevent wire breaks, pay attention to the following points for routing of cable bundles.The wiring method for transducer, encoder, and motor cables should make it so that no forces act onto the connector part. 2） When Nutrunner cables are laid within the same exible conduit (in case of multiple units etc.), the distance should be kept as short as possible and laying in the same exible conduit with power cables should be avoided. 3） Basically, it is recommended to wire transducer and encoder cables separately from motor cables. (Distance between cables: 30 cm or more)

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