Intelligent Motion Systems IM2000S User Manual

REV101805

IM2000S PIN ASSIGNMENTS

NAME

FUNCTION

SCLK

Step clock input. A positive going edge on this input will advance the motor one increment (the size of the increment is dependent

on the microstep select inputs).

RSEL

ROM select input. When low, this input selects the internal sine/cosine ROM. When high, AD0-AD8 are selected for use with

an external lookup table.

RESET

Reset input. When low, this input will reset the IM2000S (PWM, Enable and Full Bridge outputs will be disabled). When

released, the controller will be at its initial state (sine at 0, cosine at peak).

DIR

Direction input. This input is used to change the direction of the motor. Physical direction also depends on the connection of the

motor windings.

CSEL

Clock select input. When low, the SCLK input will be directed to the internal sine/cosine generator independent of the level of

the EN input. When high, the SCLK input will be directed to the COUT output when the EN input is low and, conversely, to the

internal sine/cosine generator when the EN input is high.

Enable input. When low, this input will enable/disable the PWM and full bridge output signals.

FSTEP

On fullstep output signal. This active low output indicates when sine & cosine outputs of the IM2000S are positioned on a full

step.

FAULT

Fault output signal. This active high output indicates when a fault has occurred. It will stay active until the IM2000S is reset.

Write input. When the IM2000S is confi gured in the buss mode, this input is used to latch in the microstep select, enable and

direction inputs.

MODE

Mode select input. This input is used to confi gure the IM2000S in a stand-alone or buss mode.

45, 2

PWMA, PWMB

Phase A and Phase B pulse width modulated output signals. These outputs can be used to control the phase currents in common

PWM type power sections.

44, 3

SIGNA, SIGNB

Sign of A and sign of B output signals. These outputs indicate the sign of the sine and the sign of the cosine.

43, 4

ENA, ENB

Phase A and Phase B enable output signals. These active high outputs, which work in conjunction with the enable input of PIN 6,

can be used to enable/disable the power section of the driver.

38, 39, 41, 42

HRA, LRA,

LLA, HLA

Phase A high side and low side full bridge control signals. These outputs can be used to control discrete P-N or N-N full bridge

sections or half and full bridge ICs.

5, 6, 8, 9

HLB, LLB,

LRB, HRB

Phase B high side and low side full bridge control signals. These outputs can be used to control discrete P-N or N-N full bridge

power sections or half and full bridge ICs.

12–19

COS0–COS7

Cosine waveform output signals for Phase B.

28–35

SIN7–SIN0

Sine waveform output signals for Phase A.

IHI

Polarity select input for active high or active low high side full bridge control outputs.

ILOW

Polarity select input for active high or active low low side full bridge control outputs.

36, 11

VSA, VSB

Phase A and Phase B current sense inputs.

37, 10

OVCA, OVCB

Phase A and Phase B over current/short circuit protection inputs.

CURRED

Automatic current reduction output signal. This active high output is used to automatically reduce the driver output current 1

second after the last step clock input.

22, 23

OSCRC, OSCR

Resistor/capacitor inputs for on-board PWM oscillator.

OVV

Over voltage protection input.

OVTMP

Over temperature protection input.

25, 58

VCC

Supply voltage.

7, 21, 40, 54

GND

Ground.

48–51

MSEL0–MSEL3

Microstep resolution select inputs. These inputs are used to select the number of microsteps per full step. The available resolu-

tions (microsteps/step) are: 2, 4, 5, 8, 10, 16, 25, 32, 50, 64, 125, 128, 250, 256.

12–19

AD0–AD7

Address 0 - Address 7. These outputs are used in conjunction with external lookup tables for user supplied sine and cosine

curves.

COUT

SCLK output. This output is dependent on the CSEL and EN inputs.

55, 56

CIR0, CIR1

PWM circulation select inputs. These inputs are used to select whether or not the PWM will be in a recirculating or a non-recir-

culating mode, or an automatic recirculating and non-recirculating mode.