Delivery, internal transport, unpacking
Version 1.0.2 dated 2018-03-02 Page 27Translation of the original instructions
DH45V GB
DH45V_GB_3.fm
OPTIMUM
MASCHINEN - GERMANY
®
3.8.1 Connecting the optional foot switch
Floating contact for thread cutting.
The foot switch is used for reversing the direction of rotation for tapping, and can also be used
to switch off the automatic spindle feed.
Img. 3-1: Connector plug foot switch
Connect the foot switch to the connector.
INFORMATION
The connection cable has no polarity. The contact (2 wires) is designed as looped signal.
3.8.2 Warming up the machine
ATTENTION!
If the geared drill and in particular the drilling spindle is immediately operated at
maximum load when it is cold it may result in damages.
If the machine is cold, e.g. directly after having transported the machine, it should be warmed
up at a spindle speed of only 500 1/min for the first 30 minutes.
3.9 Electrical connection
WARNING!
Danger to life caused by high leakage currents for an interrupted protective conductor.
The drive components conduct a high leakage current via the protective conductor.
Touching conductive parts when the protective conductor is interrupted can result in
death or serious injury.
Observe the following notes on the connection for machines with frequency converters.
To ensure trouble free operation we recommend the mains supply impedance is less than 1% .
The mains supply impedance is the alternating current resistance in the public supply network.
If the input impedance to the inverter does not coincide with the impedance of the line, reflec
-
tions occur, which reduces the power transmission and can lead to a non-linear frequency
response.
WARNING!
The three-phase electrical connection may only be performed by an electrician or under
the guidance and supervision of an electrician.
CAUTION!
Arrange the machine's connection cable in such a way that it will not cause a tripping
hazard.
Connector plug foot switch
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