- Parker ACR Motion Controllers User Guide

Parker Hannifin
118 Aries User Guide
• (Rotary motor) Encoder limit of 5 MHz (pre-quadrature)
• Linear motor speed limitations include encoder resolution and track
length.
• The corner of the continuous speed/torque or speed/force curve
(the point where the continuous and peak torque/force curves
meet).
The DMTW value is used in conjunction with DMTICD to protect the motor from
thermal damage.
DMVLIM
Velocity Limit
Type
System
Product Rev
Syntax
<a_>DMVLIM<r>
Aries 1.0
Units
Rotary motor: r = revolutions/second
Linear motor: r = meters/second
Range
Ø.ØØ to 40Ø.ØØ : ±Ø.Ø1
Default
125.ØØ
Response
DMVLIM: <*>5Ø.ØØ
See Also
DMODE, DMTR
Auto-Setup: When using a Parker motor and the Aries Support Tool, this
command is automatically set for the selected motor.
If you did not use the Aries Support Tool, are using non-Parker motors, or
sent an RFS command to the drive, the parameter is set to zero (0)—you
must manually set this parameter to a non-zero number.
For a list of auto-configured commands, see DMTR.
The DMVLIM command sets a limit that the commanded velocity cannot
exceed without affecting gains or scaling. This is typically used to protect
parts of the mechanical system.
If the velocity demand from the internal Aries control loops exceeds the limits
set by DMVLIM, the Aries invokes the “Override Mode”, in which the drive
software clamps the maximum velocity to the value set by DMVLIM.