Structure and function of the machine
Hohner Maschinenbau GmbH EXACT 06/2010 13
3.3 Electrical connection and motor protective relay
Specifically observe the direction of rotation of the motor shaft (visible at the vane
marked by the red arrow). Direction can be reversed by exchanging 2 phases in
the mains supply cable.
Motor protective relay
The motor protective relay is triggered upon overload of the motor and switches off the power sup-
ply of the motor. This is indicated on the trigger display window -2-.
• Yellow display, invisible: relay not triggered
• Yellow display, visible: relay triggered
- Should the motor protective relay have triggered, the machine must first be switched off with the
ON/EMERGENCY-STOP button. Then determine and eliminate the cause.
- Once the cause has been eliminated, the motor protective relay can be reset by pressing the
reset key -1-, - Fig. 3.2 -.
While doing so, ensure that all protective systems are installed on the machine and all tools
have been removed from the machine.
Voltage
Danger of electrical shock!
¾ Only qualified skilled workers may carry out work in the vicinity of the mains
power supply.
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