AC Brushless Servo Drive System Manual Ver: 0002
ACa - 18 / 32
Preliminary
This card is inserted into the ACS drive module. Its passive components and jumpers adjust the
drive electronics to the FXM motor it governs. There is an IM card for each correct combination of
FXM motor and ACS drive as shown on the next page. The IM-000 board is used for setting DCS
Drives with non-Fagor motors. The calculation of the passive components is described on the next
page.
The potentiometers accessible from the outside allow a final adjustment of the servo drive system.
The component layout of this card and their functions are described next.
Passive components:
NC: Empty.
RIT: It sets the current value from which the i2t protection starts integrating. RIT has different
values for each motor.
RAJFV: It sets the relationship between the frequencies of the encoder pulses and the equivalent
voltage in the internal drive circuits.
RAPT: It determines if the Ballast is an internal or external resistor. If an external Ballast is
installed RAPT should be equal to 10 Ohms. An open RAPT means internal Ballast. The protection
against i2t exceeding doesn't work with external Ballast.
RTV1: (not available yet) It sets the drive acording to the encoder pulses per turn used. If RTV1
is short-circuited the drive will be set for 3000 ppt, if RTV1 is openned it will be set for 2500 ppt.
RAD1, CAD1: They set the derivative compensation at the velocity PI.
RAP1, CAI1: They set the proportional and integral action of the velocity PI.
Jumpers (in bold, default position):
J2: Ramp generator, active (ab), or not (bc).
J3: Activates the acceleration overshooting control. Active (ab).
J4: Selector for the type of command. Current command (ab) or velocity (bc).
Identity Module, IM
Acc/Decc Ramps
Max. Current Limit
PI Gain
Max. Speed
Offset
J3 J4
ab abc
abc
J2
NC
RIT
RAJFV
RAPT
RTV1
RAD1
CAD1
RAP1
CAI1
- IM Board -
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