556/641 Bosch Rexroth AG | Tightening Technology 3 608 878 300
System 350 | 3 608 878 300/2019-03
Parameter "Precise motor screw reduction ratio"
Reduction ratio calculation:
I
Total
= I
ErgoSpin
* I
Angle head
* I
Flat output drive
+ I
x
...
Configuration
example
7.5.2.3 Setting the global parameters
General The unit (Nm, Ftlb, Inlb, kpm, kgfm, and kgm) selected in the Unit torque list applies for the tightening
program and tightening channel and is used for tightening results data, graph displays, etc. The values
Spindle overload and Per. torque in the Spindle limits field are adapted to the selected unit.
Operating mode The 1-channel option is permanently activated with compact systems.
Channel
configuration
The Automatic radio button is only active if there is a channel configuration with a hand-held nutrunner
ErgoSpin, with a DMC measurement transducer or offset output drive with integrated measurement
transducer
VMC...-SD/-QC/-SP. In this case, you can choose between automatic and manual channel configuration.
If the automatic channel configuration is not possible for system components, error code 1113 will be
displayed.
A change in the hand-held nutrunner or tightening spindle is automatically recognized and accepted by
the automatic configuration, making the tightening system immediately ready for operation. Serial number
monitoring is inactive if the automatic configuration is active.
Table 7–14: Hand-held nutrunner components reduction ratio
ErgoSpin Varioline Reduction ratio Angle head Reduction ratio
ESV005/012 27.9230769230769 WH013 1.095238095
ESV025 17.4705882352941 WH040 1.733333333
ESV050 36.6230769230769 WH056 1.157894737
ESV073 24.4152249134948 WH065 1.35
ESV146 52.02 WH075 1.5625
WH100 1.421052632
WH150 1.095238095
WH220 1.588235294
The total reduction ratio factor for angular measurement of the tightening system is usually determined
automatically by the system according to the connected spindle components of the tightening channel
configuration. The information of "Precise motor screw reduction ratio" > 0.0 overwrites this total
reduction ratio factor for angular measurement of the tightening system!
The reduction ratio factors for torque measurement are not affected.
Reverse spin direction No No Yes
Output drive spin
direction
Clockwise Clockwise Clockwise