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Commissioning
19-08 Power-Recovery
Option:
Function:
outside the HW or SW limit area, the error is
automatically cleared and the error occurred signal
goes low to indicate that normal operation is
restored.
19-09 Automatic Brake Control
Option:
Function:
[0]
Disabled When the automatic brake control function is
disabled (set to [0]), the frequency converter
control loop is active, even at standstill.
[1]
Enabled When the automatic brake control function is
*
enabled (set to [1]), the electromechanical brake
is automatically activated every time the
application has been at standstill for a time
period specified in parameter 19-12 Hold Delay.
This is especially useful in hoist applications
where the motor could overheat if it has to
deliver full torque at standstill for a prolonged
period.
19-10 Coast Delay
Range:
Function:
200
[0–
Used with the automatic brake control function.
ms
1000
The coast delay is the delay after activating the
ms]
electro-mechanical brake before disabling the
controller and coasting the motor. Useful in
hoisting applications where the load would
otherwise drop a little after each stop. This is
because the activation of the brake is slower
than the deactivation of the motor.
19-11 Brake Delay
Range:
Function:
200
[0–
Used with the automatic brake control function.
ms
1000
The brake delay is the delay after activating the
ms]
control and magnetising the motor, before the
brake is deactivated. Useful in applications with
(typically large) motors that take a longer time
to be fully magnetised than the time it takes for
the electro-mechanical brake to deactivate.
19-12 Hold Delay
Range:
Function:
0 s
[0–
Used with the automatic brake control function.
10000 s]
The hold delay is a waiting period in which the
brake is not activated, even though the
application is at standstill. Useful in applications
where a sequence of fast positioning commands
is followed by longer standstill periods.
MG33R302
Operating Instructions
19-13 Brake Wear Limit
Range:
0
[0–
1073741824
UU]
19-14 Motor/Encoder Gear Numerator
Range:
1
[1–
100000]
19-15 Motor/Encoder Gear Denominator
Range:
1
[1–100000] See the description of parameter 19-14 Motor/
19-16 Maximum Jog Velocity
Range:
100 ERPM
NOTICE
This setting must never exceed a value that is approxi-
mately 5% lower than the value in parameter 32-80
Maximum Velocity (Encoder).
19-17 Jog Ramp Time
Range:
5000
ms
19-18 Jog Velocity Scaling
Option:
[0]
No scaling The jog velocity is defined in encoder
*
[1]
Scaling
Danfoss A/S © 04/2014 All rights reserved.
Function:
If a value higher than [0] (disabled) is set,
the motor defines an error situation (Brake
wear limit exceeded – ERROR STATUS = 7) if
the drive moves more than the number of
user units (UU) specified in this parameter
while the electronic brake is activated.
Function:
If the encoder is mounted on a gear where 5
revolutions of the motor correspond to 2
revolutions of the encoder, this parameter should
be set to [5] (the number of motor revolutions)
and parameter 19-15 Motor/Encoder Gear
Denominator should be set to [2] (the number of
encoder revolutions). If the encoder is mounted
directly on the motor shaft, this parameter setting
should remain at [1].
Function:
Encoder Gear Numerator. If the encoder is
mounted directly on the motor shaft, this
parameter setting should remain at [1].
Function:
[1–20000
The maximum speed allowed while
ERPM]
jogging the application is specified in
terms of Encoder Revolutions Per
Minute (ERPM).
Function:
[10–
This parameter specifies the ramp-up time
100000
and the ramp-down time used during
ms]
jogging. The ramp time is defined as the
time in milliseconds it would take to ramp
from standstill to the maximum allowed
velocity in parameter 32-80 Maximum
Velocity (Encoder).
Function:
revolutions per minute (ERPM).
The jog velocity is scaled by Motor/Encoder
Gear Numerator/Gear Denominator.
5
5
25
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