Danfoss VLT FCD 303 Operating Instructions Manual page 25

This table shows what the output frequency is:
Preset ref., Preset ref.,
msb lsb
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
Connection of mechanical brake
Using terminal 122/123
Par. 302 Digital input = Start [7]
Par. 304 Digital input = Coasting stop inverted [2]
See also par. 138, 139, 140
Mechanical brake with accelerator winding
Par. 302 Digital input = Start [7]
Par. 304 Digital input = Coasting stop inverted [2]
See also par. 138, 139, 140
MG.04.B7.02 - VLT is a registered Danfoss trademark
Selection of Output
Setup frequency[Hz]
0 2.5
0 5
0 10
0 17.5
1 20
1 25
1 35
1 50
®
VLT FCD Series
Use of the relay for 230 V AC brake
Par. 302 Digital input = Start [7]
Par. 304 Digital input = Coasting stop inverted [2]
Par. 323 Relay output = Mechanical
brake control [25]
See also par. 138, 139, 140
Mechanical brake control [25] = '0' => Brake is closed.
Mechanical brake control [25] = '1' => The
brake is open.
See more detailed parameter settings under
Control of mechanical brake.
NB!:
Do not use the internal relay for DC brakes
or brake voltages > 250 V.
Counter stop via terminal 33
The start signal (terminal 18) must be acti v e, i.e. logical
'1', until the output frequency is equal to the reference.
The start signal (terminal 18 = logical '0') must then be
removed before the counter value in parameter 344
has managed to stop the VLT frequency converter.
Par. 307 Digital input = Pulse input [30]
Par. 343 Precise stop function = Counter
stop with reset [1]
Par. 344 Counter value = 100000
25