National Instruments NI-9505 20 kHz, Brushed DC Servo驱动模块

OPERATING INSTRUCTIONS AND

SPECIFICATIONS

NI 9505

This document describes how to use the National Instruments 9505

module and includes specifications and pin assignments for the

NI 9505.

Hot-Swap Behavior

The NI 9505 is always disabled when it is inserted in the chassis,

regardless of whether VSUP is present or not. You can enable the

drive using the Enable Drive method in software. Refer to the

NI 9505 Reference Help book in the LabVIEW Help, available

by selecting Help»Search the LabVIEW Help, for more

information about enabling the drive.

When the NI 9505 is removed from the chassis while it is enabled,

the power to the motor is removed and the motor decelerates to a

stop based on its own friction

The NI 9505 has a 9-pin female DSUB connector that provides

connections for the encoder inputs, a +5 V connection for encoder

power, a connection for an emergency stop input, and a connection

to COM. Refer to Table 1 for the pin assignments.

The NI 9505 also has a screw terminal connector that provides

connections to a motor DC power supply and a DC brushed servo

motor. Connect the positive lead of the power supply to terminal 4,

VSUP, and the negative lead to terminal 3, COM. Refer to Table 2

for the terminal assignments.

Motor Power Signals

The MOTOR+ and MOTOR- signals power the servo motor.

Motor direction is as follows:

• Forward—Clockwise (CW) facing motor shaft

• Reverse—Counterclockwise (CCW) facing motor shaft

The E-Stop signal is an input to the drive from an emergency stop

switch. Figure 10 shows a simplified schematic of the emergency

stop input circuit. When the emergency stop switch is closed,

current flows through the circuit, and the drive is enabled. When

an external event activates the emergency stop switch, the switch

opens and current stops flowing, disabling the drive. The E-Stop

functionality is disabled by default. Refer to the NI 9505 Reference

Help book in the LabVIEW Help, available by selecting Help»

Search the LabVIEW Help, for information about how to enable

this signal using the Enable E-Stop Property.