structure
Keypad and
format
Advanced
parameter
descriptions
Serial comms
condition is detected when the speed feedback is below the zero speed threshold (Pr
3.05
) for at least 16 ms. If the speed is not stable it is possible
6.08
= 1), then the drive will be re-enabled to hold zero speed. The result is that the drive is disabled for one sample and then enabled to ramp the
motor to a stop. Therefore if coast stop is required Pr
6.08
should be set to zero to disable hold zero speed.
If stop with ramp is selected the relevant ramp rate is used to stop the motor even if Pr
2.02
is set to zero to disable ramps.
The motor can be stopped with position orientation after stopping. This mode is selected with the position controller mode (Pr
13.10
). When this mode
is selected Pr
6.01
has no effect.
ride through ability will be very short.
In
mode
0
(dis)
•
An auxiliary supply failure takes priority over an SL trip.
•
Following an auxiliary supply failure:
The drive trips UU and Solutions Modules are informed. The drive will use the external 24 V supply if connected, the fan/s are stopped, and a power
down save is performed.
•
If the line supply is lost and the auxiliary supply is good, the drive will trip supply loss SL and firing of the thyristors will suspend approximately 50 ms
later.
In
mode
1
(StoP):
•
The auxiliary supply failure and
SL trip are independent.
•
Following an auxiliary supply failure:
The drive trips UU and Solutions Modules are informed. The drive will use the external 24 V supply if connected, the fan/s are stopped, and a power
down save is performed.
•
If the line supply is lost and the auxiliary supply is good the drive will trip supply loss SL and firing of the thyristors will suspend within 10 ms of the
line supply being lost.
In
mode
1
(ridEth):
•
The auxiliary supply failure and
SL trip are independent.
•
Following an auxiliary supply failure:
The drive does not trip and show ‘rdy’.
Solutions Modules are informed. The drive will use the external 24 V supply if connected, the fan/s are
stopped, and a power down save is performed.
When the auxiliary supply is re-applied, the drive is preloaded with ‘catch a spinning motor’ mode.
•
If the line supply is lost and the auxiliary supply is good, the drive goes into ‘rdy’ state. Firing of the thyristors will suspend within 10 ms of the line
supply being lost. When the supply is re-applied the drive is preloaded with ‘catch a spinning motor’ mode.
98
Mentor MP Advanced User Guide
www.onxcontrol.com
Issue Number: 4
6.01