Start, Stop And Fault Reactions - ABB DCS 600 MultiDrive Manual
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Also See for DCS 600 MultiDrive:
- Operating instructions manual (80 pages) ,
- Manual (62 pages) ,
- Service manual (126 pages)
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3.3 Start, Stop and Fault Reactions
During operation, the drive is in one of the following
states (ABB Drive profile):
A
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O
O
N
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Table 3.1/1:
States of the drive
Power up
When the electronics power supply is switched on the
drive stays in the ON_INHIBIT state until ON = 0 is
detected. In case of a fault the drive stays in the FAULT
state.
Normal start
Status bit RDY_ON = 1 signals that no faults are
pending and that the device is ready to close the main,
fan and field contactor.
A rising edge of the ON command closes fan, field and
main contactor and activates the field control.
Status bit RDY_RUN = 1 indicates that the field
converter is active and that the drive is ready to generate
torque.
A rising edge of the RUN command activates speed and
torque control.
Status bit RUNNING = 1 indicates that the drive is in
normal operation.
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Normal stop
RUN = 0 sets the speed reference to zero and the drive
decelerates.
After the actual speed has reached zero the status bit
RUNNING is reset, the armature converter sets the
firing angle to maximum. The state RDY_RUN is
entered, when the actual current has reached zero.
ON = 0 sets RDY_RUN = 0 and the field current
reference to zero. The field converter sets the firing
angle to maximum . The contactors are opened, when
the actual current has reached zero.
ON = 0 internally forces RUN = 0.
Emergency off
Field and armature current are removed as fast as
possible. After the current has reached I
contactors are opened. The normal start command is
accepted when OFF2_N = EME_OFF_N = 1.
Emergency stop
Command EME_STOP = 0 gives the same procedure
as RUN = 0 (normal stop) except that the ramp is
switched from deceleration to emergency stop and the
state ON_INHIBIT is entered when the speed has
reached zero.
The normal start command is accepted when OFF3_N
= EME_STOP_N = 1.
The reference handling and current limitation is con-
trolled by EME_STOP_MODE.
Fault reaction
Depending on the actual fault the armature current
and/or field current is reduced to zero as fast as possible
with single pulses and maximum firing angle. Contac-
tors are opened when the current has reached zero.
Then the state TRIPPED is entered and after a success-
ful reset the state ON_INHIBIT.
The following state diagram shows the transitions
between the different states.
= 0 the
DC
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