SICK MITSUBISHI ELECTRIC MELSEC iQ-F FX5, User Manual

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6 WIRING
6.4 External Wiring Example
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6
Wiring precautions
• Power OFF the entire system while wiring. Otherwise, the system may be activated unexpectedly while connecting to
devices.
• Electrical installation should be designed in accordance with IEC 60204-1.
• All connected sensors and downstream controllers and wiring/installation must correspond to the required category
according to EN ISO 13849-1 and to the SILCL according to EN 62061 (protected installation, single plastic-sheathed cable
with shielding).
• A safety extension module should be connected to the same power supply as the one connected to the protective
equipment.
• When several power supplies are used, all mass connections (GND) must be connected to each other.
• Depending on the external loads, especially for inductive loads, additional external protective elements, such as varistors
and RC elements, may be necessary in order to protect the safety outputs. Take into account that the response times may
increase, depending on the type of protective element.
• The wiring of single-channel safety outputs as well as the external device monitoring (EDM) and XS0 (ENABLE input) must
be performed inside the control panel.
• The possibility of an external error (cross-circuit) between a safety extension module and an external device in a safety
control system has to be excluded by means of appropriate cabling measures (such as independent wiring and
independent sheathed cable).
• Take into account that short-circuits between test pulse outputs and the corresponding inputs cannot be detected.
• An FX5-SF-8DI4 has two test pulse generators. One test pulse generator is responsible for the odd-numbered test outputs
(T1, T3, T5, and T7), the other for the even-numbered test outputs (T0, T2, T4, and T6). A short circuit between T0 and T1
can be detected; however, a short-circuit between common test outputs (odd-numbered test outputs and even-numbered
test outputs) is not detected. Take this into consideration during the wiring, such as applying separate routing and sheathed
cables.
• Wire cables for reset buttons independently with each other using a sheathed cable.