2. Safety
PNEG-681CE
CE Compliant Series II Bucket Elevator
15
Electrical Safety (Continued)
4. Emergency stops.
a. Wired to stop the equipment motor (and any other associated equipment) immediately
when pressed.
b. Must remain engaged until manually disengaged.
c. The equipment should not be able to re-start immediately the emergency stop is re-set.
5. The electrical supply must include a properly designed protective earth system (PE), with connection
to all exposed conductive parts.
6. All motors must be connected to protective earth at the terminal provided.
7. The control system to include.
a. Short circuit protection.
b. Start/stop controls (labelled 1 and 0 respectively).
c. Controls designed to default to OFF after a power interruption. (Ex: Self maintained relay.)
d. The equipment should not be able to immediately re-start following re-establishment of power or
following the re-set of an emergency stop or other safety interlock.
8. Motor circuits must include motor over current protection, wired to stop the motor when the current
exceeds the motor full load current, stated in the motor rating plate.
9. It is also recommended that the electrical supply is protected by earth leakage protection, such as
Residual Current Device (RCD) or Residual Current Circuit Breaker (RCCB), to provide additional
automatic disconnection from the power in the event of a fault.
All electrical installation and design must be carried out by a qualified electrical engineer, in accordance
with EU Directives and standards and in accordance with local laws and codes. Ex: IEC 60204-1:2006.