NORDAC LINK (SK 155E-FDS / SK 175E-FDS) – Users Manual for Motor Starters as Field Distributors
10 BU 0155 en-3520
The device must not be opened.
The device must not be opened at any time during its service life and does not need to be. All
mounting, installation and commissioning works are only done on the closed device.
• Assembly is done via freely accessible mounting holes.
• Electrical connection is exclusively established via plug connectors.
• Operational settings are made via parameter adjustments or via DIP switches and potentiometers.
The access to these elements or for the connection of a parameterisation tool is via blind plugs.
These blind plugs may only be removed for works in connection with commissioning and must be
properly replaced afterwards.
• Diagnostic LEDs for displaying switching and operating states are externally visible.
1.1 Overview
This manual describes the total number of possible functions and configurations. Depending on the
device type, the configuration and functions are limited. Devices of type SK 175E-FDS have the
maximum configuration for the integrated additional characteristics.
Basic characteristics
• Close-to-motor mounting as wall mounting
• 5 digital inputs
a), b)
• 2 digital outputs
b)
• Separate temperature sensor input (TF+/TF-)
b)
• Motor overload protection (I
2
t triggering characteristic according to EN 60947) No motor
protection switch required but only one backup fuse!
• Mains and motor failure monitoring
• Magnetisation monitoring (minimum current monitoring)
• Automatic phase sequence detection
• Soft start
• Permissible ambient temperature -25°C to 50°C (pay attention to technical data)
• Integrated EMC mains filter for Class A limit values
• 2 x DIP switch and 3 x potentiometer for configuration
• LEDs for diagnosis (including signal statuses DIs/DOs)
• RS232-/RS485 interface via RJ12 plug connector, alternatively USB (only RS232)
• 24 V DC control voltage
– Must be provided via a plug connector, or
– can be provided by the device (only with option -HVS).
It is also possible to connect an external 24 V DC voltage supply via optional plug connectors in
order to supply a high-power peripheral (e.g. actuators).
• Integrated PLC ( BU 0550
)
If necessary, individual inputs may be defined at the factory by
using certain optional modules.
b) Connection is only possible via optional plug connectors.
Additional characteristics
The devices are available in the -AS-i, -AUX, -AXS or -ASS versions with integrated AS-Interface
or -PBR with integrated PROFIBUS DP.
The differences between the individual versions (SK 155E-FDS / SK 175E-FDS) are summarised in
the following table and described in this manual.
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