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Xenus XTL User Guide
Operational Theory
Copley Controls Corp.
31
2.8: Brake Operation
2.8.1: Digital Output Controls Brake
Many control systems employ a brake to hold the axis when the amplifier is disabled. Digital output
4 (OUT4) is designed specifically for a brake output. (Other outputs can be used for brake control,
but OUT4 is recommended.) Unlike the other outputs, OUT4 is optically isolated from the control
signals and has an internal fly back diode connected to the +24 Vdc input. By eliminating the need
to connect into the amplifier control connector, having the brake output on the +24 Vdc power
connector simplifies wiring when the brake wires are in the power cable of the motor.
For more information, see
Brake Output
(p. 47)
and
Logic Supply / Brake (J4)
(p. 60)
.
2.8.2: Brake/Stop Sequences
Disabling the amplifier by a hardware or software command starts the following sequence of
events.
•
The motor begins to decelerate (at
Abort Deceleration
rate in position mode or
Fast Stop
Ramp
rate in velocity mode). At the same time, the
Brake/Stop Delay Time
count begins. This
allows the amplifier to slow the motor before applying the brake.
•
When the motor slows to
Brake/Stop Activation Velocity
OR the
Brake/Stop Delay Time
expires, the brake output activates and
PWM Delay Brake/Stop Response Time
count begins.
•
When response time has passed, the amplifier’s output stages are disabled. This delay
ensures the brake has time to lock in before disabling the power section.
This sequence is not available in the current mode of operation. Instead, in current mode, the
amplifier output turns off and the brake output activates immediately when the disable command is
received.
Summary of Contents for Xenus XTL
Page 1: ...Xenus XTL User Guide P N 95 00875 000 Revision 3 June 2008...
Page 2: ...Xenus XTL User Guide This page for notes...
Page 8: ...About this Manual Xenus XTL User Guide 8 Copley Controls Corp This page for notes...
Page 12: ...Introduction Xenus XTL User Guide 12 Copley Controls Corp...
Page 51: ...Xenus XTL User Guide Specifications Copley Controls Corp 51 3 24 Dimensions...
Page 52: ...Specifications Xenus XTL User Guide 52 Copley Controls Corp...
Page 72: ...Wiring Xenus XTL User Guide 72 Copley Controls Corp...
Page 158: ...Regen Resistor Sizing and Configuration Xenus XTL User Guide 158 Copley Controls Corp...
Page 172: ...Xenus Filter Xenus XTL User Guide 172 Copley Controls Corp...