www.sentera.eu
MIW-SC2A4-EN-000 - 22 / 02 / 2021
6 - 8
MOUNTING INSTRUCTIONS IN STEPS
Before you start mounting the unit, read carefully
“
.
Choose a smooth solid surface for installation (a wall, panel, etc.).
Follow these steps:
1.
Open the door of the controller. Mind the wires that connect the rotary switch
with the autotransformer or with the printed circuit board, depending on the
product version.
2.
Mount the enclosure using corrosion resistant screws or bolts. Mind the correct
mounting position and unit mounting dimensions (see
Fig. 1
Mounting dimensions
and
Fig. 2
Mounting position
). The mounting holes are on the inside back panel of
the enclosure and are covered with blanking plugs.
3.
Pay attention to following instructions in order to minimize the operating
temperature:
3.1
Respect the distances both between the wall /ceiling and the device and
between two devices as shown in
Fig. 2.
In order to ensure sufficient
ventilation of the controller, clearance on every side has to be maintained.
3.2
When installing the device, please keep in mind that the higher you install
it, the warmer the device will get. For example, in a technical room the
correct installation height can be of great importance.
3.3
If maximum ambient temperature cannot be adhered to, please provide
extra forced ventilation / cooling.
Not respecting the abovelisted rules can reduce service life and relieves the
manufacturer of any responsibilities.
4.
Once secured in position, the mounting screws or bolts should be sealed to
maintain the IP rating of the enclosure.
5.
Because the controller enclosure is made of metal, it must be earthed and bonded
to other existing metal surfaces.
Fig. 1 Mounting dimensions
Fig. 2 Mounting position
A
C
E
D
A
C
Article code
A
[mm]
B
[mm]
C
[mm]
D
[mm]
E
[mm]
SC2A4-15L55
300
325
175
255
255
SC2A4-25L55
300
325
175
255
255
SC2A4-40L55
300
425
225
255
355
SC2A4-60L55
400
425
225
355
355
SC2A4-80L55
400
425
225
355
355
SC2A4110L55
400
430
235
355
355
Correct
Incorrect
50 mm
50 mm
75 mm
50 mm
1
3
2
4
5
0
1
3
2
4
5
0
6.
Insert the cables through the cable glands and do the wiring according to the
wiring diagram (see
Fig. 3
) while adhering to the information from section
“
Wiring and connections
” above.
6.1
Connect the power supply lines (terminals R, S, T and PE);
6.2
Connect the motor(s) (terminals U, V, W and PE);
6.3
Connect the CL normally closed contact for external clock (for switching
between high and low speed). As standard, there is a bridge between the
CL terminals.
THREE PHASE 400 VAC TWO-SPEED TRANSFORMER
CONTROLLER WITH TK AND START / STOP
SC2A4
