34
QUICK SETUP MODE
Commissioning manual Powerdrive MD2/FX
4617 en - 2017.09 / e
4.2.6 - Additional settings 2, if Ctr.01 =
Brake motor application
Apl.01
: Brake controller
Disabled (#):
Brake control is disabled.
Enabled:
Brake control is enabled.
Apl.02
: Upper current threshold (
)
Used to set the current threshold at which the brake will be
controlled. This current level should provide sufficient torque at
the time the brake is released.
Apl.03
: Brake release speed
Used to set the speed threshold at which the brake will be
controlled. This speed level should ensure sufficient torque is
provided to drive the load in the right direction when the brake
is released. In general, this threshold is set at a value slightly
above the motor slip expressed in rpm.
Example:
- 1500 rpm
= 50 Hz
- Rated on-load speed = 1470 rpm
- Slip = 1500 - 1470 = 30 rpm
Apl.04
: Brake apply speed
Used to set the speed threshold at which brake control will be
disabled. This threshold enables the brake to be applied before
zero speed so as to avoid load veering while the brake is being
engaged. If the frequency or speed drops below this threshold
when no stop request has been made (change of direction of
rotation), brake control will remain activated. This exception
can be used to avoid the brake being applied as the motor
passes through zero speed.
Apl.05
: Brake delay
:
This time delay is triggered when all the conditions for
brake release have been met. It allows enough time to establish
an adequate level of reactive current in the motor and to ensure
that the slip compensation function is fully activated. When this
time delay has elapsed, brake control is enabled.
During the whole pre-brake delay period, the ramp applied to
the reference is held constant.
:
This time delay is used to delay the brake apply command
in relation to passage below the minimum speed threshold
(
Apl.04
). It is useful for avoiding repeated oscillation of the
brake when it is being applied around zero speed.
Apl.06
: Post-brake release delay
This time delay is triggered when brake control is enabled. It is
used to allow time for the brake to release before unlocking the
speed ramp.
Apl.07
: Zero speed threshold
If the motor speed is at or below the level defined by this
parameter, the «Zero speed» alarm will be enabled. In factory-
set configuration, this alarm is assigned to digital output DO1
using parameter
I/O.11
.
In open loop mode, upon a stop command, the drive decelerates
on the selected ramp to the threshold set by
Apl.07
, and then
the motor goes into freewheel mode.
Apl.08
to
Apl.20
: Not used
Summary of Contents for LEROY-SOMER Powerdrive FX
Page 1: ...4647 en 2017 09 e Powerdrive MD2 FX Commissioning manual R f rence...
Page 41: ...41 QUICK SETUP MODE Commissioning manual Powerdrive MD2 FX 4617 en 2017 09 e Notes...
Page 174: ...174 MAINTENANCE Commissioning manual Powerdrive MD2 FX 4617 en 2017 09 e Notes...
Page 175: ...175 MAINTENANCE Commissioning manual Powerdrive MD2 FX 4617 en 2017 09 e Notes...