Festo CMTT-AS S1 Series, Description, Page: 22 / 46

5 Installation
5.1 Safety
WARNING!
Risk of injury due to electric shock.
• For the electrical power supply with extra-low voltages, use only SELV circuits that ensure a reli-
able separation from the mains network.
• Observe IEC 60204-1/EN 60204-1.
Comprehensive information concerning the electrical installation of the device è Description
Assembly, Installation.
Information for operation with safety functions
NOTICE!
Check the safety functions to conclude the installation process and after every modification to the
installation.
During installation of safety-related inputs and outputs, also observe the following:
–
Meet all specified requirements, e.g.:
–
Surrounding area (EMC)
– Logic and load voltage supply
– Mating plug
– Connecting cables
– Cross-wiring
– Additional information è Description Assembly, Installation.
– The maximum permissible cable length between the safety relay unit and the plug of the I/O inter-
face is 3 m.
– During installation, make sure you meet the requirements of EN 60204-1. In the event of a fault,
the voltage must not exceed 60 V DC. The safety relay unit must switch off its outputs in the event
of a fault.
– Carry out wiring between the safety relay unit and the I/O interface of the servo drive in such a
way as to exclude the risk of a short circuit between the conductors or to 24 V, as well as a cross
circuit
è EN 61800-5-2, Annex D.3.1. Otherwise, the safety relay unit must feature cross-circuit
detection and, in the event of a fault, must switch off the control signals on 2 channels.
– Only use suitable mating plugs and connecting cables è Description Assembly, Installation.
– Avoid conductive contamination between neighbouring plug pins.
– Make sure that no bridges or the like can be inserted parallel to the safety wiring. For
example, use the maximum wire cross section or appropriate cable end sleeves with plastic
sleeves.
– To cross-wire safety-related inputs and outputs, use twin cable end sleeves. When cross-wiring
inputs and outputs, a maximum of 10 devices may be cross-wired
è Description Assembly,
Installation.
Installation
22 Festo — CMMT-AS-...-S1 — 2018-10a