AMCI SMD23E2 Series, Руководство пользователя

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20 Gear Drive, Plymouth Ind. Park, Terryville, CT 06786
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Tel: (860) 585-1254 Fax: (860) 584-1973 http://www.amci.com
SMD23E2 and SMD24E2 User Manual
SMD23E2 & SMD24E2 S
PECIFICATIONS
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The SMD23E2 and SMD24E2 Families (continued)
General Functionality (continued)
An SMD23E2 or SMD24E2 is powered by a nominal 24 to 48 Vdc power source, and can accept surge
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voltages of up to 60 Vdc without damage. The output motor current is fully programmable from 1.0 Arms to
3.4 Arms which makes the SMD23E2 and SMD24E2 units suitable to a wide range of applications. In addi-
tion to the Motor Current setting, the Motor Steps per Turn, Idle Current Reduction, and Anti-Resonance Cir-
cuit features are also fully programmable. If you have used other stepper indexer products from AMCI, you
will find programming an SMD23E2 or SMD24E2 to be very similar to these products.
The SMD23E2 and SMD24E2 contains a true RMS motor current control driver. This means that you will
always receive the motor’s rated torque regardless of the Motor Steps/Turn setting. (Drivers that control the
peak current to the motor experience a 30% decrease in motor torque when microstepping a motor.) The
combination of an ultra-low inductance motor and a high-power, true RMS driver gives unprecedented torque
vs. speed performance for any DC application.
The SMD23E2 and SMD24E2 units have two DC inputs that are used by the indexer. Configuration data from
the host sets the function of these inputs. Each input can be individually configured as a:
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CW or CCW Limit Switch
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Home Limit Switch
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Capture Position Input (Will capture encoder position on units with the internal encoder.)
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Stop Manual or Registration Move Input
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Start Indexer Move
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Emergency Stop Input
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General Purpose Input
Encoder Functionality
All SMD23E2 and SMD24E2 units can be ordered with an internal incremental or absolute multi-turn
encoder. Incremental encoders can be programmed to 1,024, 2,048, or 4,069 counts per turn. Absolute encod-
ers have a fixed resolution of 2,048 counts per turn and encode a total of 2
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turns. (32 bits total.) Using an
encoder gives you the ability to:
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Verify position during or after a move
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Detect motor stall conditions
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Maintain machine position when power is removed if using an absolute encoder.
The motor position can be preset to the encoder position with a single command. All SMD23E2 and
SMD24E2 units with absolute encoders allow you to preset the encoder position and save the resulting
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offset in Flash memory.
Network Data Format
In order to support any host that communicates with the EtherNet/IP, PROFINET, or Modbus TCP protocols,
the format of the data read from and written to the SMD23E2 or SMD24E2 while in command mode is com-
pletely programmable. The format of the network input and output data can be programmed separately.
The smallest data size used by the SMD23E2 or SMD24E2 is the sixteen bit word, however some parameters
and data values can exceed this size. For these thirty-two bit values, the default data format is referred to as the
multi-word format. The data value is split between the hundreds digit and the thousands digit. For example, a
value of 12,345 would have 12 placed in the first (lower addressed) word, and 345 placed in the second (higher
addressed) word. This format greatly simplifies setting parameter values when programming command
blocks.