National Instruments NI 9512 User manual

OPERATING INSTRUCTIONS AND SPECIFICATIONS

NI 9512

Stepper Drive Interface Module with Encoder Feedback

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NI 9512 Operating Instructions and Specifications 2ni.com

This document describes how to use the National Instruments 9512

module and includes specifications and pin assignments for the

NI 9512. Visit ni.com/info and enter the Info Code

rdsoftwareversion to determine which software youneed for

the modules youare using. For information about installing,

configuring, and programming the system, refer to the system

documentation. Visit ni.com/info and enter cseriesdoc for

information about C Series documentation.

Note The safety guidelines and specifications in this

document are specific to the NI 9512. The other

components in the system may not meet the same safety

ratings and specifications. Refer to the documentation for

each component in the system to determine the safety

ratings and specifications for the entire system.

Safety Guidelines

Operate the NI 9512 only as described in these operating

instructions.

Hot Surface This icon denotes that the component may be

hot. Touching this component may result in bodily injury.

Special Conditions for Marine Applications

Some modules are Lloyd’s Register (LR) Type Approved for

marine applications. To verify Lloyd’s Register certification, go to

ni.com/certification and search for the LR certificate, or

look for the Lloyd’s Register mark on the module.

Caution To meet radio frequency emission requirements

for marine applications, use shielded cables and install

the system in a metal enclosure. Suppression ferrites

must be installed on power supply inputs near power

entries to modules and controllers. Power supply and

module cables must be separated on opposite sides of the

enclosure and must enter and exit through opposing

enclosure walls.

Connecting the NI 9512

The NI 9512 stepper drive interface module is part of a family of

C Series motion modules. The module provides stepper drive

interface signals for a single axis, a full set of motion I/O including

inputs for a home switch and limit switches, incremental encoder

inputs for position feedback, and 0 to 30 V digital input and output

lines. The NI 9512 also includes a processor to run the spline

NI 9512 Operating Instructions and Specifications 4ni.com

interpolation engine and patented NI step generation algorithm.

Working together they produce smoother motion resulting in

precise stepper motion control.

System Connection

The NI 9512 has two connectors, a 15-pin DSUB drive interface

connector and a 20-pin MDR feedback connector. The 15-pin

DSUB includes command signals for interfacing with stepper

drives, 0 to 30 V general-purpose digital input and output lines, and

a +19 to 30 V input for power connection. Refer to Table 1 for the

DSUB connector pin assignments.

The 20-pin MDR connector includes incremental encoder

feedback inputs, a +5 V output for encoder power, home, limit, and

position compare inputs, an output for position compare, an

additional +19 to 30 V input for power connection, and an

additional 0 to 30 V general-purpose digital input line. Refer to

Figure 2 for the MDR connector pin assignments.

Note The NI 9512 requires an external power supply.

Youcan connect the external power supply to the Vsup

input provided on the DSUB or MDR connector. Do not

connect more than one external power supply to the

module.

National Instruments offers several options for connecting the

NI 9512 to stepper drives. Youcan use the NI 9512-to-P7000

Stepper Drives Connectivity Bundle to connect the NI 9512 to the

P70530 or P70360 stepper drives from NI. To connect to

third-party stepper drives, youcan use the NI 951x Cable and

Terminal Block Bundle. Refer to Figure 3 for the 37-pin terminal

block pin assignments. Refer to the NI 951x User Manual, which

youcan download from ni.com/manuals, for information about

additional connection accessories and cabling recommendations.

Note Youcan connect the NI 9512 to drives that support

position command mode. Refer to the NI 951x User

Manual for more information.

Complete the following steps to connect the NI 9512 stepper drive

interface module to drives and other I/O:

1. Install the module in the chassis as specified in the chassis

documentation.

Note Refer to the NI SoftMotion Module book of the

LabVIEW Help for information about chassis, slot, or

software restrictions.

NI 9512 Operating Instructions and Specifications 6ni.com

2. Connect the module to a drive and other I/O using the

NI 9512-to-P7000 Stepper Drives Connectivity Bundle, the

NI 951x Cable and Terminal Block Bundle, or a custom cable

for direct connectivity.

3. Connect the NI 9512 module to an external power supply.

Caution Do not connect anything to pins marked

Reserved.

Caution The 37-pin terminal block has separate Vsupand

COM terminals for each connector. Make sure youare

using the correct Vsupand COM terminals for the

connector youare using. All signals associated with the

DSUB connector in Figure 3 are marked with a

dagger (†).

Figure 1 shows a simplified system connection diagram.

Figure 1. NI 9512 Connection Example

Encoder (Optional)Stepper Motor

Step±/CW

Direction±/CCW

Drive Fault

Drive Enable

DSUB Connector

Forward, Reverse Limit, Home

MDR Connector

NI 9512

Drive

Motor

Encoder 0 Phase A, B, Index

Limit and Home

Sensors

Power Supply

sup

NI Connection

Accessory/

Custom Cable

+5 V OUT

Direction±/CCW

Drive Fault

Drive Enable

NI 9512 Operating Instructions and Specifications 8ni.com

Table 1. NI 9512 DSUB Connector Pin Assignments

Connector Pin Signal

1Reserved

2Drive Enable

3Digital Input 3

4Digital Input 2

5Digital Output 1

6Reserved

7COM

8Digital Input 1

9Direction (CCW)–

10 Step (CW)–

11 Digital Output 0

12 Vsup

13 Direction (CCW)+

14 COM

15 Step (CW)+

Figure 2. NI 9512 MDR Connector Pin Assignments

Forward Limit

Home

COM

Digital Input 0

COM

Encoder 0 Index+

Encoder 0 Index–

COM

+5 V OUT

Position Compare

COM

Reverse Limit

Vsup

Encoder 0 Phase A+

Encoder 0 Phase A–

Encoder 0 Phase B+

Position Capture

Encoder 0 Phase B–

Reserved

NI 9512 Operating Instructions and Specifications 10 ni.com

Figure 3. NI 9512 37-Pin Terminal Block Pin Assignments

363534

333231

302928

262524

22212019

GND

17161514131211

98765

432

Forward Limit

Home

COM

Digital Input 0

COM

Encoder 0 Index+

Encoder 0 Index–

COM

+5V OUT

Position Compare

Reserved

Digital Output 0†

Vsup†

Digital Input 1†

Direction (CCW)+†

COM†

Step (CW)+†

Shield

Digital Output 1

Reverse Limit

Reserved

COM

Encoder 0 Phase A+

Encoder 0 Phase A–

Encoder 0 Phase B+

Position Capture

Encoder 0 Phase B–

Reserved

COM†

Drive Enable†

Digital Input 3†

Digital Input 2†

Direction (CCW)–†

Step (CW)–†

Vsup

† Indicates DSUB connector signals.

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