Connecting devices
Wieland Electric GmbH | BA000966 | 08/2017 [8151]
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Connecting devices
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This section describes the connection of safety sensors and actuators to the samosPRO sys-
tem and provides setup information for selected functions.
The samosPRO system supports applications up to Performance Level PL e (as per EN ISO
13849-1) and up to Safety Integrity Level SIL CL3 (as per EN 62061).
The level of safety actually achieved depends on the external wiring, the implementation of the
wiring, the parameterization, the selection of the safety sensors, and their arrangement on the
machine. To this end, consider all of the required boundary conditions and evaluate them, for
example, in a Failure Modes and Effects Analysis (FMEA).
You can find additional information to be noted during the electrical installation here:
Important information
ATTENTION
Loss of safety function due to incorrect configuration!
Carefully plan and implement configuration!
The configuration of the safety application must be precisely adapted to the circum-
stances of the system or machine to be monitored.
• Check to ensure that the configured safety application monitors the machine or system
as you have planned and whether the safety of a configured application is being ensured
at all times. This must be ensured in all operating modes and for all sub-applications.
Document the results of this test!
• Be sure to note the instructions for commissioning and daily testing in the operating in-
structions for the safety equipment integrated into the safety application.
• Note the warning information and function descriptions for the safety equipment connec-
ted to the safety control. When in doubt, contact the respective manufacturer of the sa-
fety equipment.
• Note that the minimum switch-off time of the connected sensors must be longer than the
execution time of the logic function (see software manual, Time values and logic executi-
on time).
In this way, you will ensure that the samosPRO system can detect the switching of sen-
sors. The minimum switch-off time of sensors is typically listed in the technical data for
the sensors.
ATTENTION
Protect single-channel inputs against short-circuits and cross-connections!
When a short-circuit to high occurs at a single-channel input with test pulses that were previ-
ously low, this signal can then look like a pulse for the logic. A short-circuit to high means
that the signal is first to high and then is back to low after the error detection time. A pulse
can be generated due to the error detection.
Because of this, note the following specifications for single-channel signals with test pulses:
• If the short-circuit to high occurs at a single-channel input with test pulses that was previ-
ously high, this signal for the logic then looks like a delayed falling edge (transition from
high to low).
• When a single-channel input is used and an unexpected pulse or a delayed falling edge
(high to low) at this input can lead to a state causing a risk, then you must undertake the
following measures:
– Protected cabling for the signal in question (in order to prevent cross-connections with
other signals)
– No cross-connection detection, i.e. no connection with a test output
This must be noted in particular for the following inputs:
– Input reset at the function block reset
– Input restart at the function block restart
– Input restart at the function blocks for press applications (eccentric press contact mo-
nitor,
– contact monitor for universal presses, cycle mode, press setup, single stroke monito-
ring, press automatic mode)
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Summary of Contents for samos PRO COMPACT
Page 1: ...samos PRO samos PRO COMPACT Hardware Manual Doc no BA000966 Last Update 08 2017 8151...
Page 103: ...Appendix Wieland Electric GmbH BA000966 08 2017 8151 103 Declaration of Conformity Page 2...
Page 104: ...Appendix Wieland Electric GmbH BA000966 08 2017 8151 104 Declaration of Conformity Page 3...
Page 105: ...Appendix Wieland Electric GmbH BA000966 08 2017 8151 105 Declaration of Conformity Page 4...
