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Chapter 2
Bus Supply Hardware and Parameter Conversion
Table 38 - Operation Comparison
Operating Condition
PowerFlex 700AFE Bus Supply, IP21 Rittal
3 PH, AC power
• Manually energize the main incoming
application
disconnect circuit breaker (Q0).
• Initiation of precharge sequence depends on
input from door operator or remote devices
are switched to on/start.
• Precharge contactor (K6) is energized to
supply a separate reduced DC power source to
charge the DC bus.
• When precharge is completed, the MCCB (Q1)
is energized supplying full 3 PH, AC power to
the converter.
• When MCCB (Q1) closes and provided there
are no start inhibits, the relay logic
automatically energizes a Digital input
configured to start IGBT modulation.
AFE is switched off/
• The door operator or remote devices are
stopped
switched to off.
• IGBT modulation stops immediately.
• The MCCB (Q1) is de-energized.
• DC bus output voltage decays toward zero.
• Initiation of precharge sequence and restart
of IGBT modulation requires input from the
door operator or remote devices.
• If the
IGBT modulation is stopped, but the MCCB
(Q1) stays energized.
• DC bus output drops to rectification voltage
provided by the IGBT device diodes.
AFE is operating with
• Loss of AC power or manually de-energize the
IGBT modulation,
main incoming disconnect circuit breaker
followed by opening the
(Q0).
input disconnect or loss of
• Loss of AC power and control power causes a
3 PH AC power
fault and start/run inhibit. IGBT modulation l
stops immediately.
• The MCCB (Q1) de-energizes.
(1) Line Side stop functionality can only be initiated by digital input 0:112 [DI L Stop] or by communication to Logix controller Add-On-Profile (AOP) Logic Command tags
does not stop IGBT modulation.
76
PowerFlex 700AFE Bus Supply, IP20 2500
MCC
• Manually energize the main incoming
• Initiation of the precharge sequence depends
• Precharge contactor (K6) is energized to
• When precharge is completed, the AC
• When the AC contactor (K1) is energized and
• The door operator or remote devices are
• IGBT modulation stops immediately.
• The AC contactor (K1) is de-energized.
• DC bus output voltage decays toward zero.
• Initiation of precharge sequence and restart
button on the HIM is pressed,
• If the
• DC bus output will drop to rectification
• Loss of AC power or manually de-energize the
• Loss of AC power and control power causes a
• The AC contactor (K1) de-energizes.
Figure 20
and
Figure 21
a frame 8 PowerFlex 755TM bus supply with the optional control transformer
(-C1 option code). The user-supplied 24V DC auxiliary control power is
shown connected, but the bus supply functions without this power supply.
Rockwell Automation Publication 750-RM003A-EN-P - April 2018
disconnect circuit breaker (Q0).
on input from door operator or that the
remote devices are switched to on/start.
supply a separate reduced DC power source to
charge the DC bus.
contactor (K1) is energized supplying full
3 PH, AC power to the converter.
there are no start inhibits, the relay logic
automatically energizes a Digital input that is
configured to start IGBT modulation.
switched to off.
of IGBT modulation requires input from the
door operator or remote devices.
button on the HIM is pressed,
IGBT modulation is stopped but the AC
contactor (K1) stays energized.
voltage provided by the IGBT device diodes.
main incoming disconnect circuit breaker
(Q0).
fault and start/run inhibit. IGBT modulation
stops immediately.
show typical power and control power connections for
PowerFlex 755TM Bus Supply
• Manually energize the input disconnect
switch (FD1).
• Precharge is initiated immediately.
• Precharge contactor (M1) is energized to
supply reduced AC to LCL filter and
converter. Diodes within the IGBT devices
are used to charge the DC bus.
• When precharge is completed, the motor-
operated MCB circuit breaker (CB1) is
automatically energized supplying full
3 PH, AC power to the converter.
• When the MCB (CB1) is energized and
there are no start inhibits, the user-
configured IGBT modulation stop/start/
run control starts IGBT modulation.
• User-configured IGBT modulation stop/
start/run control requests stop IGBT
modulation.
• IGBT modulation stops immediately.
• The MCB (CB1) stays energized.
• DC bus output drops to rectification
voltage provided by the IGBT device
diodes.
• Provided there are no start inhibits, IGBT
modulation is restarted by the user-
configured stop/start/run control.
(1)
• If Line Side stop
is true, IGBT
modulation is stopped but the AC circuit
breaker MCB (CB1) stays energized.
• DC bus output drops to rectification
voltage that is provided by the IGBT device
diodes.
• Loss of AC power or manually de-energize
the input disconnect switch (FD1).
• Loss of AC power and control power
causes a fault and start/run inhibit. IGBT
modulation stops immediately.
• The MCB (CB1) de-energizes.
(Table
40). The HIM red button
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