SCU
Brief instructions for
initialization
INSTALL ATION INSTRUCTIONS
Safety, Operating manual, Troubleshooting
Before start-up, please read the operating instructions for the SCU control unit
carefully and pay special attention to the safety notes. The relevant notes an
operating manual can be found at https://medialibrary.ewellix.com/asset/16223.
www.ewellix.com/en/global/products/linear-actuators/control-units/scu.
Overview and connections for the SCU
control unit
Fig. 1
Overview of SCU control unit, without protective cover
1
2
3
5
4
6
7
8
9
10
11
12
13
14
15
16
1. Housing
2. Space for software data label
3. Connection for operating elements (sockets 8, 9, 10)
4. Connection for 4 external end switches (socket 7)
5. Fastening for safety protective cover
6. Cable guides
7. Installation holes (4)
8. Under-floor rechargeable battery
9. Connection for operating actuators and pillars (sockets 1 to 6)
10. Not occupied (sockets 15, 16)
11. Not occupied (socket 14)
12. Optional rechargeable battery connection (socket 13)
13. Operational voltage indicator (not visible on this image)
14. Communication interface (socket 12)
15. Operational earthing bolt (not visible on this image)
16. Mains connection or connection for source of DC voltage (socket 11)
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PUB NUM TC-08049-EN-April 2021
Initialization process (for standard
parameters)
1. Connect operating element(s)
Insert the HD15 connector of the operating element carefully and correctly
into the relevant socket of the SCU control unit (⮑ position 3 in Fig. 1).
2. Connect drive(s)
Insert the connector (DIN8) for the drive into the relevant socket on the SCU
control unit (⮑ item 9 in Fig. 1). Check that the letter on the marker clip for
the drive matches the letter on the data label (⮑ position 2 in Fig. 1) of the
relevant socket.
When using several drives of the same type, the drives must be connected
according to the desired function.
3. Connect supply voltage
For the AC version: Insert the country-specific mains cable correctly into the
relevant socket (⮑ position 16 in Fig. 1) of the SCU control unit. For the DC
version: Connect the wires of the DC cable to a suitable voltage source (the
DC supply must be short-circuit- proof or suitably protected), polarity: red +
and blue –.
4. Initialize the system
Press the Up and Down buttons of the first level operating element at the
same time for 5 seconds. An intermittent signal confirms the action.
Move all the drives connected to the SCU control unit to the zero position by
pressing the Down button.
WARNING
If initialization is not performed correctly, the system will not operate prop-
erly and this may lead to errors that only become apparent later.
5. Test initialization
To assure correct initialization, you have to move all actuators. There must
not be any audible alarm and the speed of the actuators must comply with
the specifications on the datasheet.
Adding, removing, replacing actuators
WARNING
If drives are added, removed or replaced after initialization, the initialization
process must be repeated.
