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4.3.2 Application diagram for the safe detection of an analog signal
A6
C2
A5
CS MP307
2-wire sensor schematic
Led
Led
Led C1
Led C2
CH A
CH B
/
/
/
/
green
green
green
green
orange
orange
orange
orange
/
/
green
green
alternate
alternate
alternate
alternate
red /
red /
red /
red /
green
green
green
green
red
red
red
red
Legend:
/ = off
4.4 Increase of number and load capacity of contacts
If necessary the number and the load capacity of output contacts can be increased by
using external contactors with forcibly guided contacts
Feedback circuit for external contactors
with automatic start
+
K7
F
K8
Tx
Ix
24 Vdc
OS1
OS2
K7
K8
-
In order to function correctly, any modules or PLCs connected to the OSx safety
electronic outputs must be able to withstand cyclical deactivation tests performed
on the same.
5 INTERNAL WIRING DIAGRAM
24V
A1
T01
T02 ... T04
P1
P2
OS1
OS2
OS3
OS4
0V
A2
O01
6 SIGNALLING
LEDs
PWR LED
P1, P2
Fail of power supply to safety module, wrong connection, power wires cut
Off
Off
down, breakdown of external fuses.
Failure of safety module.
Green
Off
Normal operation.
Not recoverable fault.
Green
Red
Suggested action: Try to restart the module. If the fault persists, send
back the device for repair.
Recoverable fault: Overcurrent on Tx or Ox
Red x 1
Green
Suggested action: Disconnect the signalling outputs (Ox), or test outputs
Blue x 1
(Tx) and check for external short circuit.
Recoverable fault. A problem has been detected on OSx (ground short
Red x 1
circuit, or power supply short circuit or short circuit between two OSx).
Green
Suggested action: Disconnect the safety output OSx and check for
Blue x 2
external short circuit.
Red x 1
Recoverable fault. Safety module temperature outside limits.
Green
Suggested action: Take back the temperature inside the admissible range.
Blue x 3
Red x 1
Recoverable fault. Lack of power supply to 24V-0V clamps.
Green
Suggested action: Check the wiring
Blue x 4
C2
A6
A5
CS MP307
3-wire sensor schematic
Description
Lack of power supply in the module.
Module start-up phase.
Internal tests at start-up.
Normal functioning, inputs channels active.
Input channels C1/C2 are undetectable because of
a lack of supply to terminals A5/A6 or because of a
failure of the measurement stage.
Board internal error.
Feedback circuit for external contactors
with manual or monitored start
+
K7
F
K8
Tx
Ix
24 Vdc
OS1
K7
-
A3
A5
I21
I22
...
I41
F1A
F1B ... F2B
O02 ... O04
A4
J25
J26 ... J28
A6
Possible fault cause
Green
Blue x N
7 INSTRUCTIONS FOR PROPER USE
7.1 Installation
Attention: Do not exceed the tightening torque of the terminal screws specified
in the present operating instructions.
Attention: Observe the wiring of the terminals: incorrect wiring can damage the
device which may result in loss of the safety function.
Attention: This is a complex device, designed to provide safety functions
to protect machine operators. The hardware and software of this device, external
devices, general circuit design and building, are all essential if specific safety goals
are to be reached. Therefore, only qualified operators with suitable knowledge of
electrical systems and safety regulations should install this device and put it into
service.
- Install only inside a cabinet with protection degree not less than IP54 according to
EN 60529.
- Always affix the device with the specific DIN rail adaptor acc. to EN 60715.
- Do not stress the device with bending and torsion.
- Do not modify or open the device for any reason.
- The device carries out an operator protection function. Any inadequate installation
or tampering can cause serious injuries and even death, property damage, and eco-
nomic losses.
- These devices must not be bypassed, removed or disabled in any other way.
- If the machine where the device is installed is used for a purpose other than that
specified, the device may not provide the operator with efficient protection.
- The safety category of the system (according to EN ISO 13849-1), including the safe-
ty device, also depends on the external components connected to it and their type.
- Before installation, make sure the device is not damaged in any part.
- Before commissioning, check the correct functioning of the module.
- Avoid excessive bending of connection cables in order to prevent any short circuits
or power failures.
- Do not paint or varnish the device.
- Do not drill the device.
- Do not use the device as a support or rest for other structures, such as raceways,
sliding guides or similar.
- Before commissioning, make sure that the entire machine (or system) complies with
all applicable standards and EMC directive requirements.
OS2
- The documentation required for correct installation and maintenance is available on-
line in various languages on the Pizzato Elettrica website.
- This device can only be installed and used if all these technical instructions and all
K8
safety regulations relevant for the application have been observed and implemented.
- Should the installer be unable to fully understand the documents, the product must
not be installed and the necessary assistance may be requested from the manufac-
turer (see paragraph SUPPORT).
- Always attach the following instructions to the manual of the machine in which the
device is installed.
- These operating instructions must be kept available for consultation at any time and
for the whole period of use of the device.
7.2 Do not use in the following environments
C1
C2
- In environments where continual changes in temperature cause the formation of
condensation inside the device.
- In environments where the application causes the device to be subjected to strong
impacts or vibrations.
- In environments with the presence of explosive or flammable gases or dusts.
- In environments containing strongly aggressive chemicals, where the products used
coming into contact with the device may impair its physical or functional integrity.
- Prior to installation, the installer must ensure that the device is suitable for use under
the ambient conditions on site.
7.3 Maintenance and functional tests
Attention: Do not disassemble or try to repair the device. In case of any mal-
function or failure, replace the entire device.
- The device installer is responsible for establishing the sequence of functional tests
to which the device is to be subjected before the machine is started up and during
maintenance intervals.
- The sequence of the functional tests can vary depending on the machine complexity
and circuit diagram, therefore the functional test sequence detailed below is to be
considered as minimal and not exhaustive.
- Perform the following sequence of checks before the machine is commissioned and
at least once a year (or after a prolonged shutdown):
1) Check that the safety module housing is undamaged and in good condition. If the
housing is damaged, replace the entire device.
2) Check that all signalling LEDs are working.
3) Check that the electrical cables are firmly lodged inside the terminals and connectors.
4) Check that the module functions as required by the application program.
- The device has been created for applications in dangerous environments, therefore
it has a limited service life. Although still functioning, after 20 years from the date
of manufacture the device must be replaced completely. The date of manufacture is
placed next to the product code (see paragraph MARKINGS).
7.4 Wiring
Attention: Do not install the safety module if voltage is present. Power the
device only when the electrical circuits have been completely realized according to
the specifications indicated in the OPERATION paragraph. The first time you start the
6/24
The application program has forced the module in error state with error
code N. Typically because of a detected fault condition on the inputs (i.e.
external short circuits, external not allowed state).
Suggested action: Disconnect the inputs and check for external short
circuit. Check the documentation of the Application Program for more
details.
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