© 2016 Cop
yr
ight Pizzato Elettr
ica - tr
anslation of the or
iginal instr
uctions
K8
K7
K7
K8
F
-
+
Tx
Ix
24 Vdc
OS1
OS2
K8
K7
K7
K8
F
-
+
Tx
Ix
24 Vdc
OS1
OS2
13 INCREASE OF THE NUMBER AND THE LOADING CAPACITY OF THE CONTACTS
If necessary it is possible to increase the number and the loading capacity of the
output contacts by using external contactors with forced guided contacts.
Feedback circuit for external contactors
with automatic start wiring
Feedback circuit for external contactors
with manual or monitored start wiring
For a correct system operation any safety module or PLC connected to the electronic safety outputs
OSx have to tolerate the pulse tests that are made on safety outputs .
12 APPLICATION DIAGRAMS
- The sole use of proximity sensors type “pnp” is allowed;
- The duty cycle of each cam must make sure that at least one of the two sensors
associated is always active;
- prevent foreign bodies to penetrate between the proximity sensors and the cams
thanks to proper installation, in order to avoid unwanted activations of the sensors.
- Install the two proximity sensors of the same axis in a way that makes them
mechanically independent, in order to avoid a failure for simultaneous detachment of
both sensors. For example, avoid fixing both sensors to a single bracket.
- To detect the sense of the rotation, the two sensors referring to the same axis must
be installed with a phase angle of 1/4 of the angle subtended by the tooth and the
slot of each cam (example: if the phonic wheel has two teeth and two slots, the
subtended angle of each cam is 180° and suggested phase angle is 45°). The tooth/
slot duty cycle in any case must guarantee that at least one sensor is always active
in any condition.
- The correct detection of each axis rotation sense must always be verified on the
machine, because it is strongly influenced by:
- Acceleration and angular speed of the axis
- Phase angle between the two sensors
- Cam shape (duty cycle)
- Reaction time of the sensors used
Application diagram for the safe detection of the movement of one or two rotating axes
Led F1A Led F1B Led F2A Led F2B Description
/
/
/
/
Lack of power supply in the module.
green
green
green
green
Module start-up phase.
orange
orange
orange
orange
Internal tests at start-up.
green
*
*
*
The sensor connected to terminal F1A
is active.
*
green
*
*
The sensor connected to terminal F1B
is active.
*
*
green
*
The sensor connected to terminal F2A
is active.
*
*
*
green
The sensor connected to terminal F2B
is active.
blinking
green
blinking
green
blinking
green
blinking
green
During the rotation of the axes, LEDs
F1A, F1B, F2A, F2B blink green at the
same frequency of the signal received
on the proximity sensors inputs. The
voltage on A3-A4 terminals is correct.
alternate
red /
green
alternate
red /
green
alternate
red /
green
alternate
red /
green
Voltage on A3-A4 terminals is out of
the allowed range (example: terminal
detachment, sensors failure)
red
red
red
red
Board internal error.
14 DISPOSAL
At the end of service life product must be disposed of properly.
15 SUPPORT
The device has been created for safeguarding people’s physical safety, therefore in
case of any doubt concerning installation or operation methods, always contact our
technical support service:
Pizzato Elettrica Srl - Italy
Via Torino, 1 - 36063 Marostica (VI)
Tel39.0424.470.930
Fax +39.0424.470.955
E-mail [email protected]
www.pizzato.com
Our support service provides assistance in Italian and English.
16 EC CONFORMITY DECLARATION
I, the undersigned, as a representative of the following manufacturer:
Pizzato Elettrica s.r.l. , Via Torino, 1 - 36063 Marostica (VI) - Italy
hereby declare that the product is in conformity with whatever prescribed by the 2006/42/
EC Machine Directive. The complete version of the present conformity declaration is
available on our site www.pizzato.com
Mr. Pizzato Giuseppe
DISCLAIMER:
Rights to any modifications reserved without prior notice and errors excepted. The data mentioned on
this sheet are accurately checked and represent typical mass production values. All descriptions of
the device and its applications, work contexts, details on external testing, information on installation
and operation are supplied according to our best knowledge. However, this does not mean that the
characteristics described may entail legal liabilities extending beyond the “General Terms of Sale”, as
stated in the Pizzato Elettrica general catalogue. Customers/users are not exempt from the obligation
to examine our information and recommendations, as well as the relevant technical standards, before
using the products for their own purpose. Taking into account the great variety of applications and
possible connections of the device, the examples and diagrams given in the present manual are to
be considered as merely descriptive; the user is deemed responsible for checking that the specific
application of the device complies with current standards. This document is a translation of the original
instructions. In case of discrepancy between the present sheet and the original copy, the Italian version
shall prevail. The present manual may not be reproduced, in whole or in part, without the prior written
permission by Pizzato Elettrica. All rights reserved
F1B
A4
F1A
CS MP205
A3
+
-
F2B
F2A
axis 1
axis 2
