GHM9
OVERSPEED SPEED SWITCH, GHM9 SERIES
CHARACTERISTICS
Maximum breaking sequence
The commutation speed n
s
is definitely calibrated in
our factory.
Right or left rotation direction.
The switching speed n
s
is defined for an acceleration =
100 s
-2
(other, consult us).
Nota: 1 rad.s
-2
↔ 9,55 rpm.s
-1
The hysteresys is about –3% in counter clockwise
direction compared with clockwise direction.
It is advised to choose the switching speed n
s
in order
that n
s
> 1,15.n
n
(n
n
: working speed, nominal speed).
The centrifugal relay must be used only in the case of
an increasing speed.
In decreasing speed, the centrifugal switch will open
automatically at a slower speed of approximately 40%
of the calibrated switching speed n
s.
In the case of a higher acceleration than 100 s
-2
, the switching speed will
be higher (n’s, cf here-under drawing).
Shocks / impacts can create premature switching or transient opening.
This is particulary the case when the switch’s direction of action and the
shock are the same. Rotating the mounting position (60° division on
flange) reduces the problem.
STANDARD CONNECTION
With 4 pinout solenoid valve connector.
Contact 1 to 3 can be connected
according to the desired configuration
(rest, work or opposite).
The earth pin of the connector must be
connected to the ground of the
installation.
AVAILABLE COMBINATION (Consult us for special version: ex: flange / connection / specific speed...)
Available combination:
- incremental encoder + overspeed switch,
- tacho-encoder + overspeed switch,
- absolute encoder + overspeed switch,
- incremental encoder + opto-tacho + overspeed switch,
- overspeed switch + overspeed switch …
Standard speeds (rpm) : 1 000, 1 200, 1 500, 1 800, 3 000 (consult us for other speed).
Reference: consult us.
Note : The switch commutation speed is calibrated in our factory, no correction and no later modification is possible.
Made in France
Changes possible without further notice - Version 121106
BEI Sensors
Espace Européen de l’Entreprise
9, rue de Copenhague
B.P. 70044 Schiltigheim
F 67013 Strasbourg Cedex
Tél : +33 (0)3 88 20 80 80
Fax : +33 (0)3 88 20 87 87
Mail : info@beisensors.com
Web : www.beisensors.com
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