Curtiss-Wright | EL30 Rev. H PN23942 6/14/16
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2.2 Typical System Wiring
Please refer to Section 7.0 for specific wiring information.
2.3 Standard Actuator Connections
Please refer to Section 7.0 for connection information.
2.4 Feedback Information
EL Series actuators use resolvers as their primary feedback
device. Depending on the amplifier that will e used to operate the
actuator, the hookup of the actuator can vary. Always consult
Section 7.0 for proper wiring, or contact Exlar for the correct wiring
details.
The EL Series actuators incorporate a 2 pole resolver as the
primary rotary feedback device. The selection of this feedback
device is dictated by the amplifier that the end user will use to
operate the actuator. This amplifier is indicated in the model number
of the EL Series actuator as a 3 digit code consisting of 2 letters and
1 number.
Each amplifier has specific requirements for the feedback on the
motor. Not all resolver-based amplifiers can use the same resolver,
resolver alignment, or relative direction of resolver rotation.
Many amplifiers offer software that allows the entering of
parameters or the downloading of "motor data files" that dictate how
the feedback must be set up on the motor. Exlar can provide many of
these "data files" or the proper parameters to enter. Entering motor
parameter data to some amplifiers may require assistance from the
amplifier manufacturer.
Feedback Alignment
When Exlar manufactures an EL Series actuator, the feedback is
mounted, aligned and test run on the amplifier that the customer
plans to use, or one that is known to be equivalent for confirming
proper feedback alignment and operation. In any case where it is
determined that the feedback has become misaligned, or an amplifier
change is made requiring the feedback to be aligned differently, it is
recommended that Exlar be contacted and arrangements made to
have that procedure performed
Feedback Wiring
The wiring of the feedback device is critical to the operation of the
actuator with the selected amplifier. Mis-wiring the feedback cable
can cause unstable operation, incorrect operation or no operation at
all. In some cases, if the proper current limits are not set in the
amplifier, mis-wiring of the feedback cable can lead to damage of the
motor.
