Danfoss VLT 2800 Manual page 89

signal. If reference signals are connected to more than
one input, these reference signals must be added up.
If one current feedback signal is connected, select
Feedback [2] on terminal 60.
Wobble [10]
The delta frequency can be controlled by the analog
input. If WOBB.DELTA FREQ is selected as analog in-
put (par. 308 or par. 314) the value selected in par. 702
equals 100 % analog input.
Example: Analog input = 4-20 mA, Delta freq. par. 702
= 5 Hz • 4 mA = 0 Hz and 20 mA = 5 Hz. If this function
is chosen, see Wobble Instruction MI28JXYY for fur-
ther information.
315 Terminal 60 Min. scaling
(AI 60 SCALE LOW)
Value:
0.0 - 20.0 mA
Function:
In this parameter you can set the signal value that will
correspond to the minimum reference or minimum
feedback, parameter 204 Minimum reference, Ref
Minimum feedback, FB .
MIN
Description of choice:
Set the required current value. If the Time out function
is to be used (parameter 317 Time out and 318 Func-
tion after time out ) the value set must be higher than
2 mA.
316 Terminal 60 Max. scaling
(AI 60 SCALE HIGH)
Value:
0.0 - 20.0 mA
Function:
This parameter is used for setting the signal value that
is to correspond to the maximum reference value, pa-
rameter 205 Maximum reference value, Ref
Description of choice:
Set the required current value.
317 Time out
(LIVE ZERO TIME O)
Value:
1 - 99 sec.
= factory setting, () = display text, [] = value for use in communication via serial communication port
MG.27.E2.02 - VLT is a registered Danfoss trademark
Function:
If the signal value of the reference or feedback signal
connected to one of the input terminals 53 or 60 falls
below 50 % of the minimum scaling for a period longer
than the time set, the function selected in parameter
318 Function after time out will be activated. This func-
tion is only active if in parameter 309 Terminal 53, min.
scaling a value higher than 1 Volt has been selected,
or if in parameter 315 Terminal 60, min. scaling a value
higher than 2 mA has been selected.
Description of choice:
Set the required time.
318
Value:
4.0 mA
No operation (NO OPERATION)
Freeze output frequency
(FREEZE OUTPUT FREQ.)
Stop (stop)
/ 414
MIN
Jog (jog)
Max. speed (MAX SPEED)
Stop and trip (STOP AND TRIP)
Function:
This parameter allows a choice of the function to be
activated after the expiry of the Time out (parameter
317 Time out ). If a time-out function occurs at the same
time as a bus time-out function (parameter 513 Bus
time interval function ), the time-out function in param-
eter 318 will be activated.
Description of choice:
20.0 mA
The output frequency of the frequency converter can
be:
- frozen at the present frequency [1]
- overruled to stop [2]
.
MAX
- overruled to jog frequency [3]
overruled to max. output frequency [4]
-
- overruled to stop with subsequent trip [5]
10 sec.
Function after time out
(LIVE ZERO FUNCT.)
[0]
[1]
[2]
[3]
[4]
[5]
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