System manual CECX / CPU module
CAUTION!
Improper use of the assembly or the control system leads to irreparable
damage!
Turn off the power supply before inserting or removing the module.
Otherwise, the module can be destroyed or undefined signal states can
lead to damage of the control system.
14.2.3 Safety instructions for personal safety
!
WARNING!
Danger of personal injury due to electric shock!
Supply the control exclusively from power sources that have a protec-
tive low voltage (e.g. SELV or PELV according to EN 61131-2).
Connect only voltages and power circuits to connections, terminals and
interfaces up to 50 V rated voltage that have a secure disconnect for
hazardous voltages (e.g. with sufficient isolation and voltage-proof).
!
CAUTION!
Fire hazard during module failure!
Provide suitable fuses for the 24 V DC power supply of the control sys-
tem for the final application! (for details, refer to the Power supply sec-
tion).
14.2.4 Safety instructions for maintenance work
Before opening the device:
1. Disconnect the power supply.
2. Disconnect the interface connections.
!
CAUTION!
The device may only be opened by qualified personnel and only main-
tenance activities expressly approved by Festo may be performed (see
chapter “Service notes”). Any other manipulations to the device will re-
sult in loss of warranty.
CECX-II 14-3
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