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3.
Make sure that the charging switch [Q10] is open. It isolates the supply module
charging circuit from the drive DC link.
4.
Open the DC switch/disconnector [Q40] of the charging circuit. It isolates the
drive charging circuit from the drive DC link. Handle is on the incoming unit door.
5.
Lock out and tag out the switches.
Supply unit DC link re-connecting procedure:
1.
Close the charging switch [Q10].
2.
Wait that the capacitors in the supply modules charge.
3.
When the indicator [P1] on the cabinet door goes on (capacitors charged), close
the DC switch/disconnector [Q11].
4.
Open the charging switch [Q10].
5.
Close the DC switch/disconnector [Q40] of the drive charging circuit. Handle is
on the incoming unit door.
6.
Start the supply unit. Note that the charging switch [Q10] must be open to start
the supply unit.
Local charging control switch [S4]
￭
The cabinet can be equipped with a local charging control switch [S4]. Position "1"
enables closing of the DC switch-disconnector [Q11].
If the DC link is not energized and the DC switch isolator [Q11] of the supply unit is in
the OFF position, [Q11] is locked by solenoid [K11]. In this case, the DC switch of the
supply unit cabinet cannot be closed again to start the unit. The DC main charging
circuit must be activated manually. For this purpose, there is a local charging control
switch [S4] on the cabinet door, next to the start switch [S21]. First, the AC charging
switch [Q3] and DC switch isolator [Q40] must be closed. The DC main charging circuit
is activated by turning the local charging control switch [S4] to position (1). After a
few seconds, when the DC link is charged to the rated voltage level, the DC charging
switch [Q10] of the supply unit is closed. When charging is complete (DC voltage above
80 % of the nominal), [Q11] lock is released. The DC main switch isolator [Q11] can now
be closed and the charging switch [Q10] opened. Before the supply unit can be started,
[S4] must be turned to position (0).
Emergency stop button [S61] and reset button [S62]
￭
The emergency stop button [S61] (option +G331) activates an emergency stop function.
When the user presses the button, the function stops the drive and motor according
to the stop category (optional selection). The button has a self-hold mechanism. Before
the drive restart is possible, the user must release the button and press the reset
button [S62]. The reset button light goes on after the emergency stop function is
ready for reset.
Operation principle and hardware description 35
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