www.sentera.eu
MIW-STR-3-EN-000 - 24 / 10 / 2018
5 - 8
WIRING AND CONNECTIONS
Connections
Pe
Earth terminals
R
Power supply 3*230 VAC / 50—60 Hz
S
T
N
Unregulated output, neutral
L1
Unregulated output, phase (230 VAC / 50—60 Hz)
U
Regulated output to motor
V
W
ATTENTION
Make sure you use cables with an appropriate diameter.
MOUNTING INSTRUCTIONS IN STEPS
Before you start mounting the STR-3, read carefully
“
and
follow these steps. 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. The mounting holes are on the inside back panel of the
enclosure and are covered with blanking plugs.
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
).
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.
STANDARD 3-PHASE 230 VAC
TRANSFORMER CONTROLLER
STR-3