BMR SFU-0303 Series, Manual

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SFU-0303 M a n u a l
E
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The digital wiring can even be achieved with outputs of logic circuits, with a High Out level > 20V.
The picture shows a configuration with passive switches in combination with the auxiliary voltage
of the converter.
For stabilizing the reference analogue voltage for the duty speed a voltage regulator 7810 is
used. In combination with a PLC generally a D/A-converter with 10V output level is used
The outputs are executed in such a way that the logic levels 0V and +24V are generated by the
galvanically separated relays. For any other arrangement, the relay contacts can be wired and
used freely. In the arrangement shown above, the logic level is assigned to the GND of the
converter. The outputs shown in the diagram can be used directly as feed into a PLC.
Description of the behaviour during Start with released analogue input: Scaling:0-10V/MinMax
Enabling via input "digital start" – the spindle starts as soon as the level at the analogue input
"duty speed" is higher than the minimum rotational speed limit being setup in spindle
characteristic. It will stop, as soon as either "digital start" is low or the level at analogue input
"duty speed" is below the minimum rotational speed limit.
In case of applying 10V to "analogue input "duty speed" and 16V to "digital start", the spindle will
accelerate up to maximum speed.
12. EMC
This device was developed for use in industrial environments. For trouble-free operation and to
reduce emitted interference, the following should be observed during wiring of the equipment:
•
The EMC of a machine or device is affected by all connected components (motor spindle, length
and type of cables, wiring, etc..). Under certain circumstances the use of additional filters may be
necessary to maintain the current laws.
•
The earth and shield connections of all those devices used in interconnection with the frequency
converter should be as short as possible and have as large a cross-section as possible.
•
Control units (PLC, CNC, IPC, ...) used in interconnection with the frequency converter should be
connected to a common earth terminal bar.
•
For mechanical installation, use serrated lock washers to guarantee good electrical contact with
the housing.
•
All connections both to and from the frequency converter should be via shielded cable. Earth
shield should be connected on both sides.
•
The shield must be completely connected to PE (protective earth).
•
Power lines, motor lines and control lines should be laid separately and have to be isolated from
each other. Where crossings cannot be avoided, it should be executed at 90° to each other.
•
The control cable should be laid as far away as possible from the power cables.