The device must not be tampered with or changed, except for the procedures described
in this document.
The device must not be repaired. Improper repair can result in the device not providing
correct protection.
Restrict access to replacement actuators, so they cannot be used for bypassing.
4.3
Design
DANGER
Bypassing the protective device
Hazard due to lack of effectiveness of the protective device
b
Eliminate any temptation to tamper with the safety locking device by implementing
measures such as the following:
°
Attach safety switches with a cover or with shielding, or ensure they are out of
reach.
°
Cover the safety switch and the actuator with additional equipment or protect
them against access. Cover the sensor and the actuator with additional
equipment or protect them against access.
4.3.1
Selection of the actuator
NOTICE
Selecting unsuitable actuators or improper mounting can damage the device.
b
Select the right actuator (
b
Pay attention to the door radius and mounting options.
4.4
Integrating into the electrical control
Switch-on commands which bring about a dangerous state of the machine must not be
enabled until the protective device is closed and the lock is activated. The lock must not
be deactivated until the dangerous state has ended. Depending on the safety concept,
the signal is analyzed by, e.g., safety relays or a safety controller.
The connected controller and all devices responsible for safety must comply with
the required performance level and the required category (for example according to
ISO 13849-1).
4.5
Testing plan
The safety locking device must be tested by appropriately qualified safety personnel
when commissioning, after modifications, and at regular intervals.
The regular thorough checks serve to investigate the effectiveness of the safety locking
device and discover defects because of modifications or external influences (such as
damage or tampering).
The manufacturer and user must define the type and frequency of the thorough checks
on the machine on the basis of the application conditions and the risk assessment.
Determination of the thorough checks must be documented in a traceable manner.
4
PROJECT PLANNING
12
O P E R A T I N G I N S T R U C T I O N S | i15 Lock
8020548/1FVF/2022-04-27 | SICK
Subject to change without notice
