Danfoss MCO 350 Operating Instructions Manual page 57

Syncronising Controller MCO 350 Operating
Instructions
Parameter No. 19-02
Hold function: Specify how the drive is to react when Input 29 is activated . "Hold" switches the
drive from master synchronisation to a fixed frequency. Choose "0" to use the frequency set in
par. 1903 and "1" to use the current frequency.
Parameter No. 19-03
Hold speed: Set here, as a percentage of the maximum speed, the speed at which the drive should
move when you activate Hold and the value "0" was selected in Parameter 1902.
Parameter No. 19-04
Delta hold speed: Set here the step width by which the hold speed is to be changed upwards or
downwards by activating Terminals 32 + 33.
Parameter No. 19-05
Gear ratio No.: Record the number of the gear ratio that is to be displayed in Parameters 1906 to
1907. Then you set the values required in Parameters 1906 to 1908. Follow the same procedure
for the next gear ratio(s).
Parameter No. 19-06
Gear ratio numerator: Record the numerator value of the gear ratio. That is the encoder pulses
of the slave drive. To make fine adjustment possible by means of inputs 32 and 33 a ratio of for
example 7:16 must be programmed as 7000:16000.
Parameter No. 19-07
Gear ratio denominator: Enter here the denominator value of the gear ratio. This value corre-
sponds to the master pulses.
Parameter No. 19-11
Step time: In Hold mode, the next frequency change and, in synchronisation mode, the next
change of the counter factor of the gear ratio, is carried out after this time, on the presence of
one of the signals at terminal 32 or 33. The time input is in milliseconds.
Parameter No. 19-12
Step width: In speed synchronisation, the gear ratio numerator is changed by this amount, if one
of the terminals 32 or 33 is closed.
Parameter No. 19-13
Slave speed factor: Record the factor by which the slave speed must be multiplied, so that it can
be displayed. Use the following formula:
F actor
Example:
F actor
Parameter No. 19-14
Master speed factor: Record the factor by which the master speed must be multiplied, so that it
can be displayed. Use the following formula:
F actor
N x x Slaveencoder
400
set
=
x Display
60
1
x x
1500 400 1024
min
=
x
60 100
N x x M asterencoder
400
set
=
x Display
60
®
MG.33.Q1.02 - VLT is a registered Danfoss trademark
resolution
_
value
_
Resolution 1024
I ncr
.
Rev
.
= 102400
resolution
_
value
_
4. Synchronisation
increments , desired display
4
100 at 1500 1
57