Installation
8.
INSTALLATION
System installation
302
Ref.2003
· 250 ·
QC-PDS
HARDWARE
Before handling the terminals, proceed as indicated and in the following
order:
With respect to the safety functions, keep in mind that:
WARNING.
Disconnect the mains voltage at the electrical cabinet.
Wait a few minutes before handling these terminals.
The power supply of the main QC-PDS system requires time to decrease
the voltage of the power bus to safe values (< 60 V DC or 42.4 Vpeak). The
green indicator DC BUS ON being turned OFF does not mean that the
power bus may be handled or manipulated. The discharge time
depends on
the number of elements connected and it is about 10 minutes.
In screw tightening connections, rigorously apply the torque values shown in
this manual for connectors.
Check if the connectors with automatic locking or a locking lever perform
their function satisfactorily.
Mark these checks in the maintenance plan.
WARNING. The STO ·Safe Torque Off· and/or SBC ·Safe Brake Control·
safety functions do not result in an electrical disconnection. The DC BUS
remains under low voltage. Ignoring this warning may cause electrical
shock.
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