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MIW-STR-4-EN-000 - 09 / 08 / 2018
5 - 8
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OPERATIONAL DIAGRAMS
L50 series
L40 series
Knob position
0
1
2
3
4
5
400
300
260
220
230 VAC
170
U [VAC]
L1
Regulated output
(U)
Unregulated output
(L1)
0
1
2
3
4
5
400
300
230
180
130
U [VAC]
L1
Knob
position
Regulated output
(U)
Unregulated output
(L1)
WIRING AND CONNECTIONS
Connections
Pe
Earth terminals
R
Power supply (3x 400 VAC / 50—60 Hz)
S
T
N
Power supply & unregulated output, Neutral
L1
Unregulated output, phase (230 VAC / 50—60 Hz / 2 A)
U
Regulated output to motor
V
W
ATTENTION
Make sure you use cables with an appropriate diameter.
MOUNTING AND OPERATING INSTRUCTIONS IN STEPS
Before you start mounting the STR-4, read carefully “Safety and Precautions” 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.
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.
STANDARD 3-PHASE 400 VAC
TRANSFORMER CONTROLLER
STR-4
