Danfoss VLT 2800 Series, Руководство по эксплуатации

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122 Function at stop
(FUNCTION AT STOP)
Value:
Coasting (COAST) [0]
DC hold (DC HOLD) [1]
Function:
This is where to choose the function of the frequency
converter after the output frequency has become lower
than the value in parameter 123
The min. frequency for
activation of function at stop
or after a stop command
and when the output frequency has been ramped
down to 0 Hz.
Description of choice:
Select Coasting [0] if the frequency converter is to 'let
go' of the motor (inverter turned off).
Select DC hold [1] if parameter 137 DC hold voltage is
to be activated.
123
Min. frequency for activation of func-
tion at stop
(MIN.F.FUNC.STOP)
Value:
0,1 - 10 Hz
0,1 Hz
Function:
In this parameter, the output frequency is set at which
the function selected in parameter 122
Function at
stop is to be activated.
Description of choice:
Set the required output frequency.
NB!
If parameter 123 is set higher than param-
eter 130, then the start delay function (pa-
rameter 120 and 121) will be skipped.
NB!
If parameter 123 is set too high, and DC
hold has been chosen in parameter 122,
the output frequency will jump to the value
in parameter 123 without ramping up. This
may cause an overcurrent warning /
alarm.
126 DC brake time
(DC BRAKING TIME)
Value:
0 - 60 sec.
10 sec
Function:
In this parameter, the DC brake time is set at which
parameter 132
DC brake voltage is to be active.
Description of choice:
Set the required time.
127 DC brake cut-in frequency
(DC BRAKE CUT-IN)
Value:
0.0 (OFF) - par. 202
Output frequency high limit, f
MAX
OFF
Function:
In this parameter, the DC brake cut-in frequency is set
at which the DC brake is to be activated in connection
with a stop command.
Description of choice:
Set the required frequency.
128 Thermal motor protection
(MOT.THERM PROTEC)
Value:
No protection (NO PROTECTION) [0]
Thermistor warning
(THERMISTOR WARN)
[1]
Thermistor trip (THERMISTOR TRIP) [2]
ETR warning 1 (ETR WARNING 1) [3]
ETR trip 1 (ETR TRIP 1) [4]
ETR warning 2 (ETR WARNING 2) [5]
ETR trip 2 (ETR TRIP 2) [6]
ETR warning 3 (ETR WARNING 3) [7]
ETR trip 3 (ETR TRIP 3) [8]
ETR warning 4 (ETR WARNING 4) [9]
ETR trip 4 (ETR TRIP 4) [10]
Function:
The frequency converter can monitor the motor tem-
perature in two different ways:
VLT
®
2800 Series
= factory setting, () = display text, [] = value for use in communication via serial communication port
MG.27.A2.02 - VLT
®
is a registered Danfoss trademark 23
Programming