Nord Drivesystems NORDAC FLEX SK 210E Series User Manual

2 Assembly and installation
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2.4.3 Electrical connection of the control unit
Connection data:
Terminal block Size 1-4 Size 4
Typically Terminals 79/80
Cable Ø *
[mm²]
0.2 … 2.5
0.2 … 4
AWG standard 24-14 24-12
Tightening torque
[Nm]
0.5 … 0.6
0.5 … 0.6
[lb-in] 4.42 … 5.31 4.42 … 5.31
Slotted screwdriver
[mm]
3.5
3.5
* flexible cable with wire-end ferrules (with or without plastic collar) or rigid cable
SK 2x0E SK 2x5E
The device generates its own 24 V DC control
voltage and provides this to terminal 43 (for
connecting external sensor systems, for
example).
However, size 4 device can also be supplied
by an external control voltage source
(connection to terminal 44). The switchover
between the internal and external power
supply takes place automatically.
The device must be provided with an external
24 V DC s
upply. Alternatively, an optionally
available 24 V DC
power supply of type
SK CU4-… or SK TU4-… can be used.
The control voltage for devices that use the
AS interface (SK 225E and SK
235E) must
be supplied via the yellow AS interface line.
However, in this case the frequency inverter
must not have an additional supply via
terminal 44 in order to prevent damage to the
mains unit or the AS interface bus.
Information
Control voltage overload
A control unit overload caused by non-permissible high currents can destroy the unit. Impermissibly high currents
occur if the total cuurent which is actually obtained exceeds the permissible total current, or if the 24 V DC control
voltage for other devices is passed through the frequency inverter. To avoid conduction through the frequency
inverter, e.g. double wire end ferrules must be used.
The control unit can also be overloaded and destroyed if the 24 V DC supply terminals of devices with an
integrated power supply (SK 2x0E) are connected to a different voltage source. For this reason, particularly when
installing connectors for the control connection it must be ensured that any cores for the 24 V DC power supply
are not connected to the device but are insulated accordingly (example of connector for system bus connection
SK TIE4-M12-SYSS).
Information
Total currents
24 V DC can be taken from several terminals if necessary. This also includes e.g. digital outputs or a operating
module connected via RJ45
The sum total of the currents that are obtained must not exceed:
Device type Size 1 to 3 Size 4
SK 2x0E
200 mA
500 mA
SK 2x5E
200 mA
-
Devices with AS Interface, when using the AS Interface 60 mA 60 mA

Nord Drivesystems NORDAC FLEX SK 210E Series Specifications

General

Brand	Nord Drivesystems
Model	NORDAC FLEX SK 210E Series
Category	Inverter
Language	English