National Instruments MID-7602 User Manual And Specifications

Also see for NI MID-7602: Overview User guide User guide User guide

National Instruments MID-7602 User Manual And Specifications Manual pdf 13 page image

MID-7604/7602 Stepper Power Motor Drive User Guide 12 ni.comYou can configure the MID-7604/7602 stepper drivers in a current reduction mode on a per-axis basis.This configuration is useful to minimize motor heating when you are not stepping. With currentreduction enabled, the current decreases by 50% when no stepping has occurred for approximately500 ms. DIP switch 5 controls current reduction on a per-axis basis. When this DIP switch is on, currentreduction is enabled. When this DIP switch is off, current reduction is disabled. The factory defaultsetting is current reduction enabled.Table 4 shows the available settings for DIP switch 5.Inhibit Input Polarity SettingThe MID-7604/7602 has a DIP switch that globally sets the polarity for the inhibit input for all axes.DIP switch 10 on the axis 1 DIP switch bank controls this setting. Refer to Figures 1 and 3 for thelocation of this switch.The factory default setting of DIP switch 10 is active low. If the inhibit input is active, the axis isinhibited and the yellow status LED (middle row) and red status LED (top row) illuminates for the axis.Note In older versions of the MID-7604/7602, the red status LEDs do not illuminate when theyellow status LEDs illuminate. This behavior only occurs in newer versions of the MID-7604/7602.Table 5 shows the DIP switch setting for the inhibit input polarity selection.Table 4. Current Reduction DIP Switch SettingsSwitch Setting OperationCurrent reduction enabled(factory default)Current reduction disabledTable 5. Inhibit Input Polarity DIP Switch SettingsAxis 1 Switch Setting OperationActive highActive low(factory default)5ON5ON10ON10ON