Parker Hannifin S.p.A. - Divisione S.B.C. LVD User’s Manual
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b70.13 Profile execution.
Execution of profile pre-calculated with b70.15.
b70.14
Reserved.
b70.15 Profile calculation.
Can be performed during profile execution if necessary.
3.11 Digital locking
Operating mode 10 is a tracking function referred to the frequency input signal (connector
X5) set as an encoder signal by setting b42.5=1; the encoder signal is counted on each
switching front of signals A and B. The motor position counter increases by 4096 steps per
revolution. The ratio between master and slave can be programmed using parameters Pr51 and
Pr53. You can also select the ramp to utilise during catch or release cycles (Pr52), add slip
speed (Pr58) and limit speed demands of the proportional part of the loop (Pr50). Further
information available: master and slave locked and servo-error. Using Pr52, the main ramps
and the internal PLC makes it possible to program various different catch and release modes
with or without phase recuperation. For connection diagrams refer to the chapter
Frequency
input connection.
If using a digital input for catch commands, to minimise phase errors use digital input 1 in
FAST-IN mode.
OPERATING MODE 10 PARAMETERS
Pr50
Maximum speed
. Unit=rpm, default=200, range=0..9000. This parameter makes it
possible to restrict maximum motor speed; it may be useful to limit motor speed
during catch on fly cycles or during sudden speed changes (cf. Pr58).
Pr51
Reference multiplication factor
. Default=1, range=-32000..+32000. With this
parameter and with Pr53 it is possible to program the required ratio for the input
reference frequency.
Pr52
Acceleration and deceleration ramp
. Unit=s/krpm, default=500, range=0..30000,
resolution=0.001 seconds. The acceleration and deceleration requested of the motor
can be limited so that it takes Pr52 thousandths of a second to change speed by 1000
rpm; this function may prove useful during catch on fly cycles.
Pr53
Reference division factor
. Default=1, range=-32000..+32000. With this parameter
and with Pr51 it is possible to set the required ratio for the input reference frequency.
Pr55
Real speed requested
. Unit=rpm. Read-only parameter; shows the input reference
frequency converted into rpm.
Pr56
Servo-error window
. Unit=steps, default=100. If the absolute value of the position
error exceeds the value set in Pr56, b70.5 is set to 1. If b70.5 is utilised, it must be
reset by the user following servo-errors, e.g. by means of the PLC program.
Pr57
Proportional gain of the position loop
. Default=100, range 0..32000.
Pr58
Slip speed
. Default=0, range 0..
±
6000.
Pr60:61 Position loop reference
. Unit=steps.
Pr62:63 Motor position
. Unit=steps; increases by 4096 steps each revolution.
b70.2
Locked on
. During the catch cycle with the ramp programmed (Pr52) other than
zero, this bit indicates that the transitory phase is concluded.
b70.3
Enable position.
Default=0. When b70.8=0 this bit can be set to 1 to maintain the
position entered in Pr61:60.
b70.5
Servo error
. b70.5 is set to 1 if the absolute value of the position error exceeds the
value entered in Pr56. If b70.5 is utilised, it must be reset by the user following
servo-errors, e.g. by means of the PLC program.