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IM2000S

HIGH PERFORMANCE MICROSTEPPING STEP MOTOR CONTROLLER

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Table of Contents

Introduction to the IM2000S ......................................................................................................................................... 3

Section Overview ...................................................................................................................................................................... 3

The IM2000S ............................................................................................................................................................................ 3

Features And Benefits ............................................................................................................................................................... 4

Hardware Specifications .............................................................................................................................................. 5

Section Overview ...................................................................................................................................................................... 5

Mechanical Specifications ........................................................................................................................................................ 5

Electrical & Environmental Specifications ............................................................................................................................... 6

IM2000S Pin Description .......................................................................................................................................................... 7

Operation of the IM2000S ............................................................................................................................................. 8

Section Overview ...................................................................................................................................................................... 8

Protection Inputs ....................................................................................................................................................................... 8

Microstep Select (MSEL) Inputs .............................................................................................................................................. 9

Step/Direction Inputs ................................................................................................................................................................ 9

Chip Select (CSEL) Input ....................................................................................................................................................... 10

Full Step Output ...................................................................................................................................................................... 10

Dual PWM .............................................................................................................................................................................. 10

Power Control Outputs ............................................................................................................................................................ 11

Current Control ....................................................................................................................................................................... 12

Chopping Oscillator ................................................................................................................................................................ 13

Reset ....................................................................................................................................................................................... 13

External Lookup Table ............................................................................................................................................................ 13

Buss/Stand-alone Mode .......................................................................................................................................................... 14

Typical Application ................................................................................................................................................................. 15

List of Figures

Figure 1.1: IM2000S (2.5 Times Actual Size) ........................................................................................................................ 3

Figure 1.2: Block Diagram ..................................................................................................................................................... 4

Figure 2.1: Mechanical Specifications .................................................................................................................................... 5

Figure 3.1: Overcurrent Protection ......................................................................................................................................... 8

Figure 3.2: Thermal Protection ............................................................................................................................................... 8

Figure 3.3: Recirculating PWM ............................................................................................................................................ 10

Figure 3.4: Non-Recirculating PWM .................................................................................................................................... 11

Figure 3.5: Power Control Output Relationships .................................................................................................................. 11

Figure 3.6: Power Control Output Interface Examples ........................................................................................................ 12

Figure 3.7: Digital Current Control Example ....................................................................................................................... 12

Figure 3.8: Automatic Current Reduction ............................................................................................................................ 12

Figure 3.9: Oscillator Frequency Settings ............................................................................................................................ 13

Figure 3.10: Block Diagram - External Lookup Table ........................................................................................................... 14

Figure 3.11: WR Input Timing ............................................................................................................................................... 14

Figure 3.12: Schematic (Typical Application) ........................................................................................................................ 15

List of Tables

Table 2.1:

Table 2.2:

Table 2.3:

Table 2.4:

Table 2.5:

Table 3.1:

Table 3.2:

Table 3.3:

Table 3.4:

DC Electrical Specifications ................................................................................................................................ 6

AC Electrical Specifications ................................................................................................................................ 6

Absolute Maximum Ratings ................................................................................................................................. 6

Recommended Operating Conditions ................................................................................................................... 6

IM2000S Pin Description ..................................................................................................................................... 7

Microstep Resolution Settings ............................................................................................................................. 9

Chip Select Settings ........................................................................................................................................... 10

Current Control Mode Settings .......................................................................................................................... 11

External Lookup Table (Example Address Locations) ....................................................................................... 13

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