Bus Speed Reference Value, Under Instance 20/70 And 21/71; Actual Output Speed, Under Instance; And 21/71 - Danfoss VLT 2800 Manual

I Bus speed reference value, under Instance

20/70 and 21/71

The speed reference value is transmitted to the VLT
frequency converter in the form of a 16-bit word. The
value is transmitted as a whole number. (Negative
figures are formatted by means of 2's complement.)
The bus speed reference has the following format:
Parameter 203 = "0" ["ref
0 (0000 Hex) [RPM] ⇒ + 32767 (7FFF Hex) [RPM]
Parameter 203 = "1" [- ref
-32767 (8000 Hex ) ⇒ +32767 [RPM] (7FFF Hex)
The actual reference [Ref. %] in the VLT depends
on the settings, in the following parameters:
104 Motor frequency
106 Motor Nom. speed
205 Max. Reference
Note that, If the bus speed reference is negative,
and the control word contains a run reverse
signal, the drive runs clockwise.
MG.90.B2.02 - VLT is a registered Danfoss trade mark
⇒ ref
"]
MIN MAX
⇒ + ref
]
MAX MAX
®
VLT 2800 / FCD 300 DeviceNet
I Actual output speed, under Instance 20/70
and 21/71
The value of the actual speed of the motor, is
transmitted in the form of a 16-bit word.
The value is transmitted as a whole number. (Negative
figures are formed by means of 2's complement.)
The actual speed value has the following format:
-32767 (8000 Hex) [RPM] ⇒ +32767 [RPM]
(7FFF Hex) [RPM]
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