4.4.4
Emergency stop pushbutton
At least one emergency stop pushbutton must be installed outside the monitored area.
If the automated restart is used, a further emergency stop pushbutton must be
installed close to the robot.
Depending on the manufacturer’s risk assessment, it may be necessary to install addi‐
tional emergency stop pushbuttons.
For additional information, see
see "Emergency stop pushbutton requirements",
.
4.4.5
Reset pushbutton
The reset pushbutton must be located outside the hazardous area and outside the pro‐
tective fields of the primary protective device of the safety laser scanner.
For additional information, see
see "Reset pushbutton requirements", page 22
4.5
Electrical layout
NOTE
Several safety functions are generally necessary in order to ensure a safe design for the
entire application. This requires additional components that are not part of the safety
system, such as switches, fuses, and contactors. The circuit diagrams contain informa‐
tion on wiring the safety system with additional components within an application.
The safety system can be connected to the most common industrial robots with two
normally open contacts in the safety relay.
Outputs Q1 / Q2 and Q3 / Q4 activate the safe inputs of the robot controller via the
safety relay. The safety system can therefore be used on a robot controller with test
pulse output or with complementary/equivalent inputs.
3
4
6
5
1
2
Figure 9: Circuitry with test pulse outputs
1
Safety relay
2
Robot controller
3
Test pulse output A
4
Test pulse output B
5
Safe input A
6
Safe input B
PROJECT PLANNING
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8023421/12KF/2019-01-22 | SICK
O P E R A T I N G I N S T R U C T I O N S | sBot Stop
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Subject to change without notice