Danfoss MCO 350 Operating Instructions Manual page 21

Syncronising Controller MCO 350 Operating
Instructions
I/O Number
33
01
02
03
04
05
06
39
42
50
53
54
Designation
Test run forward
Speed/Pos +
COM; 240V AC/2A
Electromechanical
brake: NO
NC
COM; 50V AC/1A; 75V
DC/1A
NO
NC
GND
Slave/Master velocity The output value is scaled to maximum slave
10V DC 15mA
0 - 10V In
0 - 10V In
®
MG.33.Q1.02 - VLT is a registered Danfoss trademark
Description
Test run; Program 1:
Test run forward at the speed defined in Pa-
rameter 1901
Synchronous operation; Program 2:
In velocity synchronous mode (P. 1901 = 0, 3,
6 or 7) the gear ratio and thus the velocity of
the slave can be changed by the value speci-
fied in parameter 19-12.
In position synchronous and marker synchro-
nous operation (par. 19-01 = 1, 2, 4 or 5), the
position offset of the slave can be changed by
the value specified in Parameter 1912. The
sign of the value in parameter 1912 selects the
offset type to be absolute or relative.
Absolute offset means that the fixed offset of
parameter 19-12 is changed and this offset is
executed when restarting synchronisation.
Relative offset means that the actual slave po-
sition is displaced but the fixed offset of pa-
rameter 19-12 is unchanged. This again
means that the actual slave position is main-
tained when restarting synchronisation. Rela-
tive offset is useful when always changing the
offset in the same direction as this would give
a very high fixed offset when using absolute
offset. This high fixed offset would then be
executed when restarting synchronisation and
the min. or max. limit of parameter 1912
would eventually be reached.
Relay output 1:
Relay 1 is open (brake activated) during power
off, and start-up of the frequency converter.
Afterwards the brake-control depends on the
selected Sync mode.
Relay output 2:
Function can be configured by means of Pa-
rameter 540.
Ground for analogue inputs/outputs.
velocity (parameter 32-80);
The output can be selected between slave or
master velocity by means of parameter 19-25
Power supply for reference value potentiome-
ter
Serves as reference input for the virtual mas-
ter if "0" is selected in Parameter 19-16.
Serves as numerator for the gear ratio if "6" or
"7" is selected in parameter 19-01.
2. Introduction
2
21