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User’s Manual

For

DM860

Fully Digital Stepper Drive

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Содержание DM860

Страница 1: ...User s Manual For DM860 Fully Digital Stepper Drive ...

Страница 2: ...Motor 4 Connections to 4 lead Motors 4 Connections to 6 lead Motors 5 Half Coil Configurations 5 Full Coil Configurations 5 Connections to 8 lead Motors 5 Series Connections 5 Parallel Connections 6 6 Power Supply Selection 6 Regulated or Unregulated Power Supply 6 Multiple Drivers 6 Selecting Supply Voltage 7 7 Selecting Microstep Resolution and Driver Output Current 7 Microstep Resolution Select...

Страница 3: ...ding 400 800 1600 3200 6400 12800 25600 51200 1000 2000 4000 5000 8000 10000 20000 40000 l Input voltage 24 80VDC l 8 selectable peak current including 2 40A 3 08A 3 77A 4 45A 5 14A 5 83A 6 52A 7 20A l Pulse input frequency up to 200 KHz TTL compatible and optically isolated input l Automatic idle current reduction l Suitable for 2 phase and 4 phase motors l Over voltage over current protections A...

Страница 4: ...7oz Mechanical Specifications unit mm inch Figure 1 Mechanical specifications Recommend use side mounting for better heat dissipation Elimination of Heat l Driver s reliable working temperature should be 70 158 and motor working temperature should be 80 176 l It is recommended to use automatic idle current mode namely current automatically reduce to 50 when motor stops so as to reduce driver heati...

Страница 5: ...urations Pin Function Details PUL PUL Pulse signal In single pulse pulse direction mode this input represents pulse signal each rising or falling edge active 4 5 5V DIR DIR DIR signal In single pulse mode this signal has low high voltage levels representing two directions of motor rotation ENA ENA Enable signal This signal is used for enabling disabling the driver High level NPN control signal PNP...

Страница 6: ...nd use line driver control signals to increase noise immunity of the driver in interference environments In the following figures connections to open collector and PNP signals are illustrated Figure 3 Connections to open collector Figure 4 Connection to PNP signal common cathode signal common anode 5 Connecting the Motor The DM860 can drive any 2 pahse and 4 pahse hybrid stepping motors Connection...

Страница 7: ... by 1 4 to determine the peak output current Figure 6 6 lead motor half coil higher speed connections Full Coil Configurations The full coil configuration on a six lead motor should be used in applications where higher torque at lower speeds is desired This configuration is also referred to as full copper In full coil mode the motors should be run at only 70 of their rated current to prevent over ...

Страница 8: ...upply voltage to decrease noise heating and improve reliability Regulated or Unregulated Power Supply Both regulated and unregulated power supplies can be used to supply the driver However unregulated power supplies are preferred due to their ability to withstand current surge If regulated power supplies such as most switching supplies are indeed used it is important to have large current output r...

Страница 9: ...ostep Resolution and Driver Output Current This driver uses an 8 bit DIP switch to set microstep resolution and motor operating current as shown below Microstep Resolution Selection Microstep resolution is set by SW5 6 7 8 of the DIP switch as shown in the following table Microstep Steps rev for 1 8 motor SW5 SW6 SW7 SW8 2 400 ON ON ON ON 4 800 OFF ON ON ON 8 1600 ON OFF ON ON 16 3200 OFF OFF ON O...

Страница 10: ...SW1 SW2 SW3 2 00A 2 40A ON ON ON 2 57A 3 08A OFF ON ON 3 14A 3 77A ON OFF ON 3 71A 4 45A OFF OFF ON 4 28A 5 14A ON ON OFF 4 86A 5 83A OFF ON OFF 5 43A 6 52A ON OFF OFF 6 00A 7 20A OFF OFF OFF Notes Due to motor inductance the actual current in the coil may be smaller than the dynamic current setting particularly under high speed condition Standstill Current Setting SW4 is used for this purpose OFF...

Страница 11: ...ral drivers separately connecting the drivers is recommended instead of daisy chaining l It is prohibited to pull and plug connector P2 while the driver is powered ON because there is high current flowing through motor coils even when motor is at standstill Pulling or plugging connector P2 with power on will cause extremely high back EMF voltage surge which may damage the driver 9 Typical Connecti...

Страница 12: ...fective edge by 5µs to ensure correct direction c t3 Pulse width not less than 2 5µs d t4 Low level width not less than 2 5µs 11 Protection Functions To improve reliability the driver incorporates some built in protections features Priority Time s of Blink Sequence wave of red LED Description 1st 1 Over current protection activated when peak current exceeds the limit 2nd 2 Over voltage protection ...

Страница 13: ...stems can be traced to electrical noise controller software errors or mistake in wiring Problem Symptoms and Possible Causes Symptoms Possible Problems No power Microstep resolution setting is wrong DIP switch current setting is wrong Fault condition exists Motor is not rotating The driver is disabled Motor rotates in the wrong direction Motor phases may be connected in reverse DIP switch current ...

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