
—————— TPD32-EV ——————
250
Motor ovrld preal.
This signal can be set on a digital output (code 65). It goes to the high level (1) when
Motor I2t accum
= 90 %. It goes to low level (0) when
Motor I2t accum
= 0.
Drive I2t accum
It gives a percentage definition of the integration of the rms current. 100% = trip level
drive I2t.
Drive I2t accum
is equal to 100% if [(150% Derated Drive Current
(*)
)
2
x 60
sec] is reached.
Drive ovrld preal.
This signal can be set on a digital output (code 66). It goes to the high level (1) when
Drive I2t accum
= 90 %. It goes to low level (0) when
Drive I2t accum
= 0.
Overld available
Indicates whether an overload is possible this very instant or whether this is not yet the
case, due to the set cycle (
Pause time
not yet expired).
High Overload possible
Low Overload currently not possible
Overload state
If the
Overload mode
parameter is defined so that the current is not limited by the
Overload control, the
Overload state
can be used to determine whether the current is
within the set limits or not.
High Current exceeds the set limits
Low Current does not exceed the set limits.
n
ote
!
Overload state is not a latched output. For I2t, it is can be considered as a one shot.
The Overload control is enabled with the
Enable overload
parameter. It can be used to protect the drive or motor
from thermal overloads with cyclical loads.
The max. possible values (as for the converter) are obtainable through the following curves. The operating point
must always be below the corresponding curve. At the verification it is to state, that the torque and the current
are proportional.
The
Overld available
parameter allows to understand if the drive is ready to supply an overload current. If the
current exceeds the value defined by the
Base current
parameter, the time set by the
Overload time
parameter
starts to run. Once this time has expired, the current is limited again to the Base current. This takes place irrespec
-
tive of how high the overload was and how long it lasted. A subsequent overload is permissable immediately
after the time set by the
Pause time
parameter. If
Overload mode
is set to “Curr not limited”, The current is not
limited but the
Overload state
parameter indicates whether it is out of the defined range.
C
aution
!
A wrong input of the values may cause the destruction of the device!
Time
Overload
current [312]
Base
current [313]
Overload
time [310]
Overload
time [310]
Overload
time [310]
Pause
time [311]
Pause
time [311]
Waiting
time
Overld
available [406]
Overload
state [407]
T current
Limits
Figure 6.14.6.1: Overload control (Overload mode = curr limited)
Содержание TPD32-EV-...-2B
Страница 1: ... Instruction manual Industrial Application DC drives TPD32 EV ...
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