Parameters – Lenze S94P01G Position Servo User Manual

Page 46

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S94P01G

44

Parameters

5.3.15 Encoder Repeat Source

This parameter sets the feedback source signal for the buffered encoder outputs (P3.7
-P3.12). The source can be the drive’s feedback input (P4) or an optional feedback
module (resolver, second encoder etc.)

5.3.16 System to Master Ratio

This parameter is used to set the scale between the reference pulse train (when operating
in position mode) and the system feedback device. In a single loop configuration, the
system feedback device is the motor encoder or resolver. In a dual-loop system the
system encoder is the second encoder. See sections 6.3 and 6.4 for details.

5.3.17 Second to Prime Encoder Ratio

This parameter sets the ratio between the secondary encoder and the primary feedback
device when the drive is configured to operate in dual-loop mode. When the primary
feedback device is a resolver, the pulse count is fixed at 65,536. The resolutions of
encoders are “post quadrature” (PPR x 4). See section 6.4.

NOTE

Post quadrature pulse count is 4X the pulses-per-revolution (PPR) of the encoder.

5.3.18 Autoboot

When set to “Enabled” the drive will start to execute the user’s program immediately
after cold boot (reset). Otherwise the user program has to be started from MotionView
or from the Host interface.

5.3.19 Group ID

Refer to the PositionServo Programming Manual for details. This parameter is only
needed for operations over Ethernet network.

5.3.20 Enable Switch Function

If set to “Run”, input IN_A3 (P3.29) acts as an “Enable” input when the user program
is not executing. If the user program is executing, the function will always be “Inhibit”
regardless of the setting. This parameter is needed so the drive can be Enabled/
Disabled without running a user’s program.

5.3.21 User Units

This parameter sets up the relationship between User Units and motor revolutions.
From here you can determine how many User Units there is in one motor revolution.
This parameter allows the user to scale motion moves to represent a desired unit of
measure, (inches, meters, in/sec, meters/sec, etc). For example: A linear actuator
allows a displacement of 2.5” with every revolution of the motor’s shaft.

Units = Units / Revolutions
Units = 2.5 Inches / Revolution
Units = 2.5

5.3.22 Resolver Track

The Resolver Track parameter is used in conjunction with the resolver motors and
Buffered Encoder Outputs, (section 4.2.2). If a motor with resolver feedback is being
used a simulated encoder feedback is transmitted out the Buffered Encoder Outputs,
P3.7 to P3.12. The default resolution of this feedback is 1024 pulses per revolution, pre
quad. If a different resolution is required then the Resolver Track parameter is utilized.

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