7-2 Locked Rotor Time-2
Range:
Function:
10 secs
*
[0:01 - 2:00
(min:secs)]
Sets the maximum length of the time
the motor can run at locked rotor
current from cold before reaching its
maximum temperature. Set according
to the motor datasheet.
If this information is not available, we
recommend the value should be less
than 20 seconds.
7-3 Start Mode-2
Option:
Function:
Selects the start mode for the secondary
motor.
Constant Current
*
Adaptive Control
7-4 Current Limit-2
Range:
Function:
350%
*
[100% - 600%
FLC]
Sets the current limit for constant
current and current ramp soft starting,
as a percentage of motor full load
current.
7-5 Initial Current-2
Range:
Function:
350%
*
[100% -
600% FLC]
Sets the initial start current level for current
ramp starting, as a percentage of motor full
load current. Set so that the motor begins to
accelerate immediately after a start is
initiated.
If current ramp starting is not required, set
the initial current equal to the current limit.
7-6 Start Ramp Time-2
Range:
Function:
10 secs
*
[1 - 180
secs]
Sets the total start time for an AAC
Adaptive Control start or the ramp time
for current ramp starting (from the initial
current to the current limit).
7-7 Kickstart Level-2
Range:
Function:
500%
*
[100% - 700% FLC] Sets the level of the kickstart
current.
7-8 Kickstart Time-2
Range:
Function:
0000 msecs
*
[0 - 2000 msecs] Sets the kickstart duration. A
setting of 0 disables kickstart.
7-9 Excess Start Time-2
Range:
Function:
Excess start time is the maximum time
the MCD 500 will attempt to start the
motor. If the motor does not reach full
speed within the programmed limit, the
starter will trip. Set for a period slightly
longer than required for a normal
healthy start. A setting of 0 disables
excess start time protection.
20
secs
*
[0:00 - 4:00
(min:secs)]
Set the excess time for the secondary
motor.
7-10 Stop Mode-2
Option:
Function:
Selects the stop mode for the secondary
motor.
Coast to Stop
*
TVR Soft Stop
Adaptive Control
Brake
7-11 Stop Time-2
Range:
Function:
0 secs
*
[0:00 - 4:00
(min:secs)]
Sets the time for soft stopping the motor
using timed voltage ramp or Adaptive
Control (AAC). If a main contactor is
installed, the contactor must remain
closed until the end of the stop time.
Use a programmable output configured
to Run to control the main contactor.
Sets the toal stopping time when using
brake.
7-12 Adaptive Control Gain-2
Range:
Function:
75%
*
[1% -
200%]
Adjusts the performance of AAC adaptive
acceleration control.
NOTE
We recommend leaving the gain setting
at the default level unless AAC
performance is not satisfactory.
If the motor accelerates or decelerates
quickly at the end of a start or stop,
increase the gain by setting by 5% -
10%. If the motor speed fluctuates
during starting or stopping, decrease the
gain setting slightly.
Programming
MCD 500 Operating Instruction
62
MG17K402 - VLT
®
is a registered Danfoss trademark
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