Bantam0 pages
Bantam
Trapezoidal Torque
Amplifier Module
BTM
RoHS
Analog Inputs
• ±10 Vdc current reference
• Peak, continuous current & peak-time set
Analog Outputs
• Current monitor
• Current reference
Digital Inputs
• Amp Enable
• Fwd/Rev Enable (limit switches)
• Hi/Lo load inductance
Digital Outputs
• Amp OK
• Regen control
• Brake control
Feedback
• Digital Halls from brushless motors
Dimensions
• 53.3 x 45.7 x 15.2 mm
• 2.1 x 1.8 x 0.6 in
Actual Size
Model
Vdc
Ic
Ip
BTM-055-20
12~55
10
20
BTM-090-10
20~90
5
10
DEVELOPMENT KIT
DESCRIPTION
Bantam is a compact, DC powered analog current amplifier for
torque control of DC brush or brushless motors. It operates as a
stand-alone driver taking a ±10V input from an external controller.
Mounting to a PC board with solderless connectors facilitates lowcost, multi-axis designs.
The Amp Enable input interfaces to active LO signals up to 24 Vdc.
Another digital input switches the current-loop gain from a high to
low for load inductance compensation. Forward and Reverse Enable
inputs are provided for limit switches.
Digital Hall feedback enables trapezoidal drive of DC brushless
motors. For driving DC brush motors, these inputs are left
unconnected and the motor connected between the U & V outputs.
Protections include I2T current limiting for peak and continuous
current as well as peak time. Short circuits between outputs or to
ground and amplifier over-temperature produce latching faults.
A Development Kit is available that provides mounting and easy
connectivity for the Bantam.
A digital output for Amp-OK indicates the amplifier’s status. There
are two other digital outputs one of which can activate an external
regenerative energy dissipator circuit and another for motor brake
control.
Copley Controls, 20 Dan Road, Canton, MA 02021, USA
Tel: 781-828-8090
Tech Support: E-mail: sales@copleycontrols.com, Internet: http://www.copleycontrols.com
Fax: 781-828-6547
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