Danfoss VLT 5000 Series, Инструкция по эксплуатации, Страница: 127 / 240

358 Terminal 42, Output maximum scaling
(out 42 scal max)
360 Terminal 45, Output maximum scaling
(out 45 scal max)
Value:
000 - 500%
100%
Function:
These parameters are to scale the maximum output of
the selected analogue/pulse signal on terminals 42
and 45.
Description of choice:
Set the value to the desired maximum value of the
current signal output.
Maximum value:
The output can be scaled to give a lower current than
20 mA at full scale or 20 mA at an output below 100%
of the maximum signal value.
If 20 mA is the desired output current at a value be-
tween 0 - 100% of the full-scale output, program the
percentage value in the parameter, i.e. 50% = 20 mA.
If a current between 4 and 20 mA is desired at maxi-
mum output (100%), the percentage value to program
in the drive is calculated as:
20 m A
desired maximum current
× 100 % ,
i.e.
10 m A §
20
10
× 100 % § 200 %
A similar scaling is possible on the pulse output. The
value (pulse scale value) in parameter 320 (output 42)
and 321 (output 45) is the basis of the scaling. If the
pulse scale value is the desired output at a value be-
tween 0 - 100% of the full scale output, program the
percentage, i.e. 50% for pulse scale value at 50% out-
put.
If a pulse frequency between 0,2 x pulse scale value
and pulse scale value, the percentage is calculated as
follows:
Pulse scale value
(
par . 320 or 321)
Desired pulse frequency
× 100 %
i.e.
2000
H z
§
5000 H z
2000
H z
× 100 % § 250 %
361 Encoder loss threshold
(ENCODER MAX ERR.)
Value:
0 - 600%
300%
Function:
This parameter adjusts the threshold level for detec-
tion of encoder loss in speed closed loop mode. The
value equals a percentage of the nominal slip of the
motor.
Description of choice:
Set the desired threshold level.
VLT
®
5000 Series
= factory setting, () = display text, [] = value for use in communication via serial communication port
124 MG.51.C5.22 - VLT
p
is a registered Danfoss trademark.