Function Applications
-533-
Figure 4-69 Connection example
EMC Requirements
1. To avoid short circuits between two adjacent conductors, shielded cables can be used with shielded
layers connected to the connection protection ground, or flat wires can be used with a ground wire
inserted between each signal conductor.
2. SFTP or STP is recommended.
3. Secure and ground the cable shroud with conductive metal sheets.
Figure 4-70 Cable clamp
4. The maximum cable length allowed between the AC drive and safety switch is 30 m.
4.7.5 Commissioning, Running, and Maintenance Requirements
Basic Requirements
● Technicians must be trained to understand the requirements and principles for the design and
operation of safety-related systems.
● Execution and maintenance personnel must be trained on the requirements and principles for the
design and operation of safety-related systems.
● Operation personnel must be trained to understand the requirements and principles for the design
and operation of safety-related systems.
● If any safety-related circuit on the control board does not work, which is irreparable, the control
board must be replaced.
Commissioning List
IEC 61508, EN IEC 62061 and EN ISO 13849 require the equipment to pass acceptance tests to verify the
operation of safety functions. Acceptance testing must be performed at the following stages:
● Initial startup of the safety function
● After any changes related to safety functions (wiring, assembly, settings, or other related
operations)
● After any maintenance work related to safety functions is completed
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