BTM-055-20 Finisar Corporation., BTM-055-20 Datasheet

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BTM-055-20

Manufacturer Part Number
BTM-055-20
Description
Rohs Bantam Trapezoidal Torque Amplifer Module
Manufacturer
Finisar Corporation.
Datasheet
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
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 low-
cost, 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.
A digital output for Amp-OK indicates the amplifier’s status. There
are two other digital outputs one of which can activate an external
Copley Controls, 20 Dan Road, Canton, MA 02021, USA
Web: www.copleycontrols.com
DeVeLoPMenT kiT
A Development kit is available that provides
mounting and easy connectivity for the
Bantam.
Bantam
regenerative energy dissipator circuit and another for motor brake
control.
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.
Trapezoidal Torque
Amplifier Module
Tel: 781-828-8090
BTM-055-20
BTM-090-10
Model
Actual Size
12~55
12~90
Vdc
10
Ic
5
Fax: 781-828-6547
RoHS
Ip
20
10
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BTM-055-20 Summary of contents

Page 1

... Copley Controls, 20 Dan Road, Canton, MA 02021, USA Web: www.copleycontrols.com Trapezoidal Torque Amplifier Module Actual Size Model Vdc BTM-055-20 12~55 BTM-090-10 12~90 regenerative energy dissipator circuit and another for motor brake control. 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 & ...

Page 2

... Vdc @ ±Ipeak Current Ref Monitor for current-loop command: ±3.0 Vdc = ±100% of rated peak current noTeS 1) Heatsink is required for continuous current rating. Copley Controls, 20 Dan Road, Canton, MA 02021, USA Web: www.copleycontrols.com Trapezoidal Torque Amplifier Module BTM-055-20 BTM-090- 1045 ...

Page 3

... HV Overvoltage +HV > Undervoltage BTM-090-10: +HV < +12 Vdc, Amplifier outputs turn off until +HV > +20 Vdc BTM-055-20: +HV < +12 Vdc, Amplifier outputs turn off until +HV > +12 Vdc Amplifier over temperature Heat plate > 70°C Short circuits output to output, output to ground, internal PWM bridge faults ...

Page 4

... Vdc. This will produce an offset adjustment range of ±0.8% of the Ipeak rating of the amplifier. The table below shows the offset adjustment range in mA. Model BTM-055-20 BTM-090-10 DiGiTAL oUTPUTS Three N-channel MOSFETs sink current from loads connecting to +30 Vdc maximum ...

Page 5

Bantam MoToR ConneCTionS Motor connections are of two types for brushless motors: phases and Halls. For brush motors, only the armature connections are needed. The phase or armature connections carry the amplifier output currents that drive the motor to produce ...

Page 6

... To use the table, find the % value as follows ContLimitCurrent * 100 AmpContCurrent Copley Controls, 20 Dan Road, Canton, MA 02021, USA Web: www.copleycontrols.com Trapezoidal Torque Amplifier Module Model i-Peak i-Cont BTM-055- BTM-090- equivalent circuit +4.80 V 9600 J1-4 Vpeak Vpeak Ipeak Rpeak Control equivalent circuit +4 ...

Page 7

... Vpeak is used to control the i2T, it can be found like this: Vi2t = 5.0 * I2TSecs Ampi2TLimit Example: find Vi2t for PeakLimitCurrent using a BTM-090-20: Vpeak = 4. 1. use a resistor for setting Peak-Limit current, calculate the value as follows: Rpeak = 9600 * PeakLimitCurrent ...

Page 8

Bantam PC BoARD DeSiGn Printed circuit board layouts for Bantam amplifiers should follow some simple rules: 1. install a low-eSR electrolytic capacitor not more than 12 inches from the drive. PWM amplifiers produce ripple currents in their DC supply conductors. ...

Page 9

Bantam PC BoARD MoUnTinG FooTPRinT Top View Dimensions in inches 0.237 60X Ø.035 ±.003 THRU AFTER PLATING 2X Ø.166 +.003/-.000 THRU AFTER PLATING Accelnet Mounting Hardware: Qty Description 1 Socket Strip 1 Socket Strip notes 1. P1 signals must be ...

Page 10

Bantam amplifier pc board connectors J1: Signal dual row centers 24 position female header samtec: sqw-112-01-l-d pin 24 J1 signals & pins Signal Pin i2T Time 2 Peak Curr Limit 4 Cont Curr Limit 6 PWM Limit 8 ...

Page 11

Bantam amplifier connections Motion Enable Controller DAC ±10V Balance 5k noTeS 1. Total output current from +5V pins (J1-21,22) cannot exceed 250 mA. 2. When Balance potentiometer is used, it should connect to amplifier +5V and ground for best stability. ...

Page 12

... Find this value on the Y-axis of the charts on the following page and draw horizontal lines across the charts to show what combinations of heatsink and air movement will produce this thermal resistance. POWER DISSIPATION VS. OUTPUT CURRENT AND HV BTM-055- ...

Page 13

... Air Flow (linear feet/min) exAMPLe A BTM-055-20 application needs to output 7 Adc while operating from power supply. in the chart on p. 10, place a vertical line at the 7 Adc point. Next draw a horizontal line that intersects point 2/3 of the way between the 36 & curves, estimating a 48 Vdc power supply. This line yields a power dissipation of 5.4 W. Next, draw lines at the 5.4 º ...

Page 14

Bantam development kit top view The graphic below shows the placement of components and connectors on the Development kit PC board. The Bantam amplifier is not shown, but mounts in the outline that contains connectors J3 & J2. J5 Copley ...

Page 15

Bantam connectors These charts show the pins and signals for the Development kit connectors. J1 motor and Hv power Pin Signal 5 Mot U 4 Mot V 3 Mot Gnd 1 +HV Input J4 Halls Signal Pin ...

Page 16

Bantam connections In the diagram below, connectors inside the Bantam outline are the amplifier connectors, their signal names, and pin numbers. All connectors and components outside of the Bantam are on the Development kit. SW1 J5 5 SW2 4 SW3 ...

Page 17

Bantam Jumper functions The functions shown in the tables below are in effect when the jumper is in place. When a jumper is removed, the stated function is disabled. J5 connects to an external controller Jp1 JP1 Remarks A Shorts ...

Page 18

... Bantam analog current amplifier, 10/20 Adc BTM-055-20 Bantam analog current amplifier, 5/10 Adc BTM-090-10 BDk-090-01 Development kit BDk-Ck Connector kit for Development kit oRDeRinG exAMPLe example: order 1 BTM-055-20 current amplifier and development kit: Qty item Remarks 1 BTM-055-20 Bantam current amplifier 1 BDk-090-01 Development kit for Bantam amplifier ...

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