Q2HB88M Features (1) High performance, low price (2) Two group 32 channels constant angel and constant torque subdivision. Highest subdivision: 480 (3) The motor phase current is reduced to set current value 100 ms after receiving the last pulse edge (4) Bipolar constant current chopping circuit (5) Opto-isolated input/output (6) Driven current is adjustable continuously from 0.5A/phase to 8A/phase (0.4A/phase to 6.4A/phase) (7) Single power supply, voltage arrange from DC24/V to 80V (DC40V to130V) (8) Highest response frequency: 200Kpps (9) Over voltage protection, overheat protection, over current protection