TDE MACNO MINIOPD EXP User Manual page 57

3.1.3.1 SPEED FREQUENCY REFERENCE MANAGEMENT
This speed reference in pulses can be provided in 4 different ways (alternatives to each other), that
can be selected by means of connection C09.
C09
0
1
2
3
To be used Speed reference in pulses must be enabled either by activating the function " Enable
reference in frequency I19 "assigned an input or by means of connection P223=1 .
The incremental position reference is always enabled and it's possible to add an offset depending on
analog and digital speed reference enable.
3.1.3.2 DIGITAL FREQUENCY REFERENCE
About the digital frequency reference, there are two working modes can be selected with C09:
Setting C09 = 1 a reference can be provided with an encoder signal with 4 tracks of a
o
maximum range varying between 5V and 24V and a maximum frequency of 300KHz.
Setting C09 = 2 a speed reference can be provided with an frequency signal with a
o
maximum range varying between 5V and 24V and a maximum frequency of 300KHz.
(setting C09 =3 will be manage the same input, but internally will be count only rising edge,
this option is useful only if it is used the time decode)
The number N of impulses/revolution for the reference is set by connection C220:
N
N° of impulses/revolution
There are the parameters P221 and P222 that permit specification of the ratio between the reference
speed and input frequency as a Numerator/Denominator ratio.
In general terms, therefore, if you want the speed of rotation of the rotor to be X rpm, the relationship
to use to determine the input frequency is the following:
Let us now look at a few examples of cascade activation (MASTER SLAVE) with frequency input
according to a standard encoder.
By a MASTER drive the simulated encoder signals A,/A,B,/B are picked up to be taken to the
frequency input of the SLAVE. By means of parameters P221 and P222 the slipping between the
two is programmed.
User's manual
Description
Analog reference ±10V (optional)
Analogic
Digital encoder 4 track frequency reference (default)
Digital f/s Frequency reference (freq. and up/down) counting all edges
Digital f/s 1 edge Frequency reference (freq. and up/down) counting one edge
0 1 2
Disable 64 128
and vice versa
Master
N° of pulses/revolution = 512
P65 = 2500 rpm
The slave goes at the same speed as the master
Mode of working
3 4 5 6
256 512 1024 2048
Slave
N° of pulses/revolution = 512
P65 = 2500 rpm
P221 = P222 = 100
7 8 9
4096 8192 16384
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