38
Instruction and maintenance manual
ENGLISH
3.3 Model ST200X
The rated operating voltage of this controller varies
according to the type of magnetic chuck to which it
is connected.
The control push-button is external, but can also be
integrated into the controller.
The control electronics are enclosed in a metal hous-
ing. The metal material of the housing is grounded in
order to guarantee maximum safety during the ena-
bling cycles.
It is important to verify that the grounding system is
always in good working order.
The controller does not have a socket for the con-
nection to the power supply. The controller has an
ON–OFF (0-1) switch, thus to adequately protect it
against short circuits, it is necessary to install a suit-
able protection system upstream from the controller.
It is generally advisable to use a magneto thermal
switch (curve C) with an I
n
value compliant with the
rating specied on the magnetic chuck nameplate
that will be connected to the controller.
The maximum power of controller ST200X is ap-
proximately 25kW per discharge if the single phase
power supply is 400V, 15kW for power supplies of
230V and 30kW for power supplies of 480V. The ab-
sorbed current is impulsive with a cycle time around
a few hundreds of milliseconds (approximately 1
second per discharge).
ST200X controllers are suitable to power single
chucks or chucks that are part of large magnetic
banks
When using chucks with a different rated voltage,
install a transformer with a suitable transformation
ratio and a rated power that matches the maximum
power of the chuck.
It is also possible to order a compact version for
ST200-QE electric cabinets with supporting terminal
board, to power the controller and magnetic chuck,
with interface connector and push-button panel.
275
331
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