Parker Hannifin S.p.A. Divisione S.B.C. user’s manual TWIN-N and SPD-N
75
7.3 Digital Lock + Positioner (operating mode 13)
Operating mode 13 includes the Digital Lock, dynamic positioner and flow speed functions in
order to use them at the same time. The tracking function refers to the input frequency signal
(X3 connector) set as an input encoder signal by setting b42.0 = 0, b42.1 =1, and b42.5 = 1.
This encoder signal is counted at every end of the communication of A and B signals. The
counter of the motor position is incremented at the rate of 4096 steps per revolution. The user
can program the ratio between the master and the slave by using parameters Pr52 and Pr53. It
is possible to choose the ramp to use during the engaging or release phase (Pr103). See the
connection diagrams in the section,
Input frequency connection. If you use a digital input for
the engaging command, the digital input 0 in FAST-IN mode must be used in order to
minimize phase errors.
The positioner function follows a trapezoidal profile in which the acceleration and
deceleration ramps are defined by Pr109, the full speed by Pr108 and the final position by
Pr118:119 (one revolution of the motor equals 4096 steps). The parameters can be modified at
any time. The current position of the positioner is given by the parameter Pr116:117.
You can add a speed by using Pr104.
7.3.1 TAB0: profiles in memory
In OPM13 is possible use the TAB0 to memory up to 51 trapezoidal profiles, and for
everyone is possible memorize the speed, the acceleration/deceleration ramp and the final
position in double word.
The Pr193 parameter contains the number of the profile to execute, with b231.10=1 bit the
function is able to transfer the block of 4 variables of profile in the positioner variables.
TAB0 1
a
word – speed – Pr108
TAB0 2
a
word – acc/ dec ramp – Pr109
TAB0 4
a
e 5
a
word – final position – Pr118:119
With the qualified function, b231.10=1, is possible execute automatically another profile,
simply setting up in the pointer parameter, Pr193, another value. Every scansion, the
parameters are transferred from the table to the positioner variables, if the function is able,
b231.10=1.
In order to insert the values in variables of TAB0, using the “configuration” tool it is
necessary open the “monitor” window, where it is possible to access from Pr2048 to Pr2302
parameter, where there are the variables of the 51 trapezoidal profiles, and it possible read and
modify them.
To insert the values via keypad, it necessary selects TAB0 (T0), indicate the variable of TAB0
(from 0 to 254), and in the inferior line write the width of the parameter.
It is necessary save the parameters for guarantee the memory of the profiles inserted.
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