This document is only valid in combination with the operating instructions for the relevant frequency converter. All
Technical Information / Datasheet
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SK TI4-TU-BUS-C
Part number: 275 280 500
Bus connection unit
ATTENTION
of the information that is relevant for a safe start-up of this assembly and the frequency converter is only available
under these conditions
Validity of document
Scope of delivery
1 x Bus connection unit SK TI4-TU-BUS-C
1 x System bus cable set grey / black
1 x 24 VDC cable set brown / blue
1 x PE cable green/yellow
1 x Gasket 2 mm, self-adhesive
2 x Leadthrough grommet 22 mm x 9.5 mm
4 x Hexagon socket M4 x 20
1 x Diaphragm valve M12x1.5 RAL9005
1 x Reducer (brass) M20 à M12
Usage area
The bus connection unit f orms the basis for the bus options and IO - expansions of model SK TU4-.
The terminal strip is divided into three potential levels . The functions of the individual term inals are
dependent upon the se lected field bus or IO - expansion and are not defined until both elem ents are
joined together (BUS - connection un it and field bus or IO expansion). The BUS - connec tion unit can
be fitted to or in the immediate vicinity of a frequency converter (SK 180E … SK 2xxE).
Technical data
Temperature range -25 °C … 50 °C Vibration resistance 3M7
Temperature class Class 3k4 Hardware version BB
Protection class IP66 Dimensions [mm] H x W x D: 95 x 136 x 55
Current rating 3A
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Connection unit SK TI4-TU-BUS-C
1.0 Erstausgabe / first issue 1613 Rck TI 275280500 GB
version reason for change(s) issue name document speech
Connection unit – SK TI4-TU-BUS-C
Incoming or outgoing line for system bus or 24 V supply, for
Leadthrough for wiring between optional assembly and frequency
Features
1. No function, M20 x 1,5
2. Diagnosis access, RJ12 socket
3.
Cable entry M20 x 1.5 (1 on left, 1 on right):
example
4.
Cable entry M25 x 1.5 (2 pcs.):
converter with direct attachment.
5.
Cable entry M16x1.5 (4 pcs.):
Leadthrough of wiring to sensors, actuators etc., direct attachment
Information
NORD can supply prefabricated M12 connection expansions for manufacturing plug-in connections.
System M12 connection expansion Part . No.
Profibus DP SK TIE4-M12-PBR 275274500
CANopen SK TIE4-M12-CAO 275274501
AS Interface SK TIE4-M12-ASI 275274502
AS Interface with aux. power SK TIE4-M12-ASI-AUX 275274513
Initiators / actuators SK TIE4-M12-INI 275274503
NORD system bus (outgoing) SK TIE4-M12-SYSM 275274505
NORD system bus (incoming) SK TIE4-M12-SYSS 275274506
24 V supply SK TIE4-M12-POW 275274507
Analog initiators / actuators SK TIE4-M12-ANA 275274508
Safe input (incoming) SK TIE4-M12-SH 275274509
HTL transmitter SK TIE4-M12-HTL 275274512
These can be screwed directly into the M16 cable lead-ins. The two existing side cable lead-ins (M20) can be
used if a suitable reducer is used.
M12 connector
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Installation
Installation location To the left or right of the frequency converter connection unit.
Alternatively using the wall mounting kit SK TIE4-WMK-TU (Mat no.: 275 274 002,
TI 275274002) near the converter
Mounting Using screw connection (4 x hexagon socket M4 x 20)
ATTENTION
Ensure that no leaks are present during installation (assembly, cable leadthroughs, cable glands) in order to
avoid penetration by moisture and therefore the risk of corrosion and short circuiting.
2 TI 275280500 - 1613
Sealing