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Safety
This section includes general safety instructions for handling the RSTi-EP system. Specific safety
instructions for specific tasks and situations are given at the appropriate places in the
documentation.
2.1
General Safety Notice
Work on the RSTi-EP products may only be performed by qualified electricians with the support of
trained persons. As a result of their professional training and experience, an electrician is qualified to
perform the necessary work and identify any potential risks.
Before any work is carried out on the products (installation, maintenance, retrofitting), the power
supply must be switched off and secured against being switched on again. Work may be carried out
with safety extra-low voltage.
When working during continued operations, the emergency stop mechanisms must not be made
ineffective. If you need technical help, contact Technical Support. For phone numbers and email
addresses, refer to the General Contact Information page in the front of this manual.
If a malfunction on a RSTi-EP product cannot be fixed after following the recommended measures
(refer to the Chapter, LED Indicators and Troubleshooting), the product in question must be sent back
to GE. GE does not assume any liability if the base or electronic module has been tampered with.
2.1.1 Electrostatic Discharge
RSTi-EP products can be damaged or destroyed by electrostatic discharge. When handling the
products, the necessary safety measures against electrostatic discharge (ESD) according to IEC
61340-5-1 and IEC 61340-5-2 must be observed.
All devices are supplied in ESD-protected packaging. The packing and unpacking as well as the
installation and disassembly of a device may only be carried out by qualified personnel and in
accordance with the ESD information.
2.1.2 Open Equipment
RSTi-EP products are open equipment that may only be installed and operated in lockable housings,
cabinets or electrical operations rooms. Only trained and authorized personnel may access the
equipment.
For applications requiring functional safety, the surrounding housing must meet at least IP 54.
The standards and guidelines applicable for the assembly of switch cabinets and the arrangement of
data and supply lines must be complied with.
2.1.3 Fusing
If EP-190x safe power-feed modules are installed within a RSTi-EP station, a Safety Extra Low Voltage
(SELV) / Protected Extra Low Voltage (PELV) power supply has to be applied to ensure the safety
functions.
The operator must set up the equipment so that it is protected against overloading. The upstream
fuse must be designed such that it does not exceed the maximum load current. The maximum
permissible load current of the RSTi-EP components can be found in the technical data.
In the case of modules without fused sensor/actuator power supplies, all lines to the connected
sensors/actuators must be fused corresponding to their conductor cross-section (as per DIN VDE
0298 Part 4).
To meet UL-specifications in accordance with UL 248-14, a UL-certified automatic fuse or a 10 A fuse
with a medium time-lag.
GFK-2956A
November 2017
5
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