Nord Drivesystems NORDAC FLEX SK 205E Series, Краткие инструкции

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NORDAC FLEX (SK 200E ... SK 235E) – Brief instructions for Frequency Inverters
32 BU 0240 en-US-4920
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2.3 Electrical connection
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WARNING
Electric shock
Dangerous voltages can be present at the power input and the motor connection terminals even when
the device is not in operation.
• Before starting work, check whether all relevant components (voltage source, connection cables,
connection terminals of the device) are de-energized using suitable measuring equipment.
• Use insulated tools (e.g. screwdrivers).
• DEVICES MUST BE GROUNDED.
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Information
Temperature sensor and PTC thermistor (TF)
As with other signal cables, PTC thermistors must be laid separately from motor cables. Otherwise
the interference signals induced by the motor winding into the line will cause a disturbance in the
device.
Ensure that the device and the motor are specified for the correct supply voltage.
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In order to establish the electrical connections, remove the SK 2xxE from the SK TI4-... connection
unit (

Section 2.1.2 "Motor installation steps").
One terminal block is provided for the power connections and one for the control connections.
The PE connections (device ground) are inside the cast housing of the connection unit on the bottom.
One contact is available on the power terminal block for size 4.
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The terminal block assignments differ according to the version of the device. The correct assignment
can be found on the inscription on the respective terminal or the terminal overview plan printed inside
the device.
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Connecting terminals for
(1) Power cable
Motor cable
Braking resistor wires
(2) Control wires
Electromechanical brake
PTC thermistor (TF) of motor
(3) PE
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