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SBV System Series | Instruction manual v1.2 DEC 2021 | SAF-UM-SBVBus-en-v1.2 | © 2021 Inxpect SpA
4. Functioning principles
4.8.2 Types of managed restart
NOTICE
: it is the responsibility of the machinery manufacturer to assess if automatic restart prevention can
guarantee the same level of safety as manual restart (as defined in standard EN ISO 13849-1:2015, section
5.2.2).
For each detection field independently, the system manages three types of restart prevention:
Type
Conditions for enabling machinery restart
Safety working mode
allowed
Automatic
The time interval set through the Inxpect Safety application
(
Restart timeout
) has passed since the last motion detection*.
All
Manual
The
Restart signal
was received correctly** (see "Restart signal"
on page 97).
Always access
detection
Safe manual
1. The time interval set through the Inxpect Safety application
(
Restart timeout
) has passed since the last motion
detection* and
2. the status of the restart signal indicates that the restart is
now possible (see "Restart signal" on page 97).
Both (default)
and
Always restart
prevention
Note *
: machinery restart is enabled if no motion is detected up to 35 cm (13.8 in) beyond the detection field.
Note **
: (for all types of restart) other dangerous system statuses may prevent the restart of the machinery (e.g.
diagnostic fault, sensor masking, etc.)
4.8.3 Precautions for preventing unexpected restarting
To prevent unexpected restarting, if the sensor is installed at a height of less than 30 cm (11.8 in) from the
ground, a minimum distance of 50 cm (20 in) from the sensor must be guaranteed.
Note
: if the sensor is installed at a height of less than 30 cm (11.8 in) from the ground, an option is to enable the
masking function to generate a system error if a person stands in front of the sensor.
4.8.4 Configure the restart prevention function
Type
Procedure
Automatic
1. In the Inxpect Safety application in
Settings
>
Restart parameters
, select
Automatic
.
2. In the Inxpect Safety application, in Configuration for each detection field in use with
automatic restart, select the desired
Safety working mode
and set the
Restart
timeout
(or the
T
OFF
parameter, if present).
Manual
1. In the Inxpect Safety application in
Settings
>
Restart parameters
, select
Manual
.
2. If there is a digital input configured as
Restart signal
(
Settings
>
Digital Input-
Output
), connect the machinery button for the restart signal as convenient, see
"Electrical connections" on page 84.
3. To use the Fieldbus communication for the restart signal, make sure that no digital
input is configured as
Restart signal
(
Settings
>
Digital Input-Output
). See the
Fieldbus protocol for details.
4. In the Inxpect Safety application, in
Configuration
for each detection field in use with
manual restart, set the
T
OFF
parameter value.
Note
: the
Safety working mode
is automatically set to
Always access detection
for all the
detection fields in use with manual restart.
Safe manual
1. In the Inxpect Safety application in
Settings
>
Restart parameters
, select
Safe
manual
.
2. If there is a digital input configured as
Restart signal
(
Settings
>
Digital Input-
Output
), connect the machinery button for the restart signal as convenient, see
"Electrical connections" on page 84.
3. To use the Fieldbus communication for the restart signal, make sure that no digital
input is configured as
Restart signal
(
Settings
>
Digital Input-Output
). See the
Fieldbus protocol for details.
4. In the Inxpect Safety application, in
Configuration
for each detection field in use with
safe manual restart, select the
Safety working mode
among those allowed and set
the
Restart timeout
parameter value.
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