Siemens SIMATIC IPC1047 Operating Instructions Manual page 28

Safety Instructions
2.2 Notes on ambient and environmental conditions
Note
When measuring the counter emf, remember the following:
• The IPC in question must be turned off and the power supply connector must be plugged
in.
• During the measurement, all cables from the plant to the IPC should be connected.
• All other components in the plant must be active.
Device and system extensions
Fire hazard due to overheating of the device
Expansion cards generate additional heat. The device can overheat or cause a fire.
• Observe the safety and installation instructions for the expansion cards.
• Observe the max. permissible power consumption values.
NOTICE
Damage caused by device and system extensions
Device and system expansions may contain faults and affect the entire device, machine or
plant. They may also violate safety rules and regulations regarding radio interference
suppression.
If you install or replace device or system expansions and damage your device, the warranty
is voided.
• Always disconnect the power plug before you open the device.
• Only install device or system expansions designed for this device.
• Observe the information on "Electromagnetic compatibility" provided in the technical
Contact your technical support team or the point of sale to find out which device and system
expansions are suitable for installation.
Limitation of liability
● All technical specifications and approvals for the device apply only if you use expansion
components that have a valid CE marking.
● Observe the installation instructions for expansion components in the associated
documentation.
● UL approval of the device only applies when the UL-approved components are used
according to their "Conditions of Acceptability".
● We are not liable for functional limitations caused by the use of third-party devices or
components.
28
CAUTION
specifications.
Operating Instructions, 07/2019, A5E45118479-AB
SIMATIC IPC1047