
PSR-PS40
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6 Safety regulations and installation notes
General
•Observe the safety regulations of electrical engineering
and industrial safety and liability associations.
Disregarding these safety regulations may result in death,
serious personal injury or damage to equipment.
•When handling the device, observe the necessary
safety precautions against electrostatic discharge
(ESD) according to EN 61340-5-1 and IEC 61340-5-1.
Direct/indirect contact
•Protection against direct and indirect contact according
to VDE0100Part410 must be ensured for all
components connected to the system.
In the event of an error, parasitic voltages must not occur
(single-fault tolerance).
Power supply units for 24 V supply
•Only use power supply units with safe isolation
andSELV/PELVaccording to EN 50178/VDE0160.
•Protect the 24V area with a suitable external fuse.
•Make sure that the power supply unit is able to supply
four times the nominal current of the external fuse, to
ensure that it trips in the event of an error.
•Make sure that the output voltage of the voltage supply
does not exceed 32V even in the event of error.
Startup, mounting, and modifications
Startup, mounting, modifications, and upgrades may only be
carried out by an electrically skilled person.
•Before working on the device, disconnect the power.
•Carry out wiring according to the application. Refer to
the “Application examples” section for this.
Reliable operation is only ensured if the device is installed in
housing protected from dust and humidity.
•Install the device in housing protected from dust and
humidity (min.IP54).
In operation
During operation, parts of electrical switching devices carry
hazardous voltages.
•Protective covers must not be removed when operating
electrical switching devices.
For emergency stop applications, automatic startup of the
machine can pose serious risks for the user.
•The machine must be prevented from restarting
automatically by a higher-level controller.
Inductive loads can lead to welded relay contacts.
•Connect a suitable and effective protective circuit to
inductive loads.
•Implement the protective circuit parallel to the load and
not parallel to the switch contact.
Magnetic fields can influence the device. The magnetic field
strength of the environment must not exceed 30A/m.
•Do not use the device in the vicinity of strong magnetic
fields (e.g.,caused by transformers or magnetic iron).
Noise emission may occur when operating relay modules.
Wireless reception may be disrupted in residential areas.
The device is a Class A product.
•Observe the requirements for noise emission for
electrical and electronic equipment (EN61000-6-4).
•Implement appropriate precautions against noise
emission.
WARNING: Death, serious personal injury or damage to equipment
Depending on the application, incorrect handling of the device may pose serious risks for the user or cause
damage to equipment.
•Observe all the safety notes and warning instructions provided in this chapter and elsewhere in this
document.
The device contains components that can be
damaged or destroyed by electrostatic
discharge.
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