.pdf version
 

NSI-SC-5912

 

Intelligent Measurement Controller (IMC), 4-Axis

 

DESCRIPTION

The NSI-SC-5912 Intelligent Measurement Controller (IMC) is a 4-axis stepper motor control device allowing control of up to 4 motion stages. In a typical planar near-field antenna measurement system, these axes would enable computer-controlled motion in X, Y, Z and POL (probe rotation) directions. Below is a block diagram of such a typical antenna measurement system, showing how the IMC connects to the other system components. The IMC is typically controlled by an RS232 serial I/O interface to the NSI measurement workstation. The IMC can control 4 axes directly, but can also control 4 additional axes using TTL step and direction commands to our conventional NSI-SC-5913 Antenna Range Controller (ARC).

IMC in Typical Application

SPECIFICATIONS

- Serial interface control from host PC running NSI2000 software
- 4 axis integral motor control
- 4 additional axes can be controlled with second standard NSI-SC-5913 Antenna Range Controller (ARC)
- Stepper motor control for motors up to 7 amps
- Forward/reverse limit switch interface for each axis
- Control of locking brake, used for braking Y-axis motion when powered off
- Safety interlock system

Rear Panel of IMC

DB37 Computer Control Connector for Auxiliary 4-Axis ARC

Pin

Signal Name

Function

Pin

Signal Name

Function

1

NC

 

20

VCC

From PC

2

NC

 

21

GND

Common

3

PB7

Axis 4 Step

22

PC7

Axis 4, + Lim

4

PB6

Axis 4 Dir

23

PC6

Axis 4, - Lim

5

PB5

Axis 3 Step

24

PC5

Axis 3, + Lim

6

PB4

Axis 3 Dir

25

PC4

Axis 3, - Lim

7

PB3

Axis 2 Step

26

PC3

Axis 2, + Lim

8

PB2

Axis 2 Dir

27

PC2

Axis 2, - Lim

9

PB1

Axis 1 Step

28

PC1

Axis 1, + Lim

10

PB0

Axis 1 Dir

29

PC0

Axis 1, - Lim

11

GND

Common

30

PA7

AUX Ctrl

12

-5 V

From PC

31

PA6

AUX Ctrl

13

GND

Common

32

PA5

AUX Ctrl

14

-12 V

From PC

33

PA4

AUX Ctrl

15

GND

Common

34

PA3

AUX Ctrl

16

+12 V

From PC

35

PA2

AUX Ctrl

17

GND

Common

36

PA1

AUX Ctrl

18

VCC

From PC

37

PA0

Trigger /
AUX Ctrl

19

GND

Common

 

 

 

 

Pinouts for Rear Panel Connectors J1, J2, J3, J4

Pin number

Signal name

Description

1

Ø 3 current

Stepper motor pulse current

2

Ø 1 current

Stepper motor pulse current

3

Ø 2 current

Stepper motor pulse current

4

Ø 4 current

Stepper motor pulse current

5

Ø2 and Ø4 common

Current pulse return

6

Ø1 and Ø3 common

Current pulse return

7

+24 V DC

Fan and other uses

8

Ground

Chassis ground

9

Enable

External driver pack

10

Limit return

Axis limit checking

11

- limit

Axis limit checking

12

+ limit

Axis limit checking

13

Unused

 

14

Ground for 24 V

DC return for +24 V

15

+ 5 V DC

 

16

+5 V return

 

17

Direction

Used for external driver

18

Step

Used for external driver

19

Step/direction return

Used for external driver

 

 

 

ORDERING INFORMATION

NSI-SC-5912 Intelligent Measurement Controller (IMC)
Nearfield Systems, Incorporated
19730 Magellan Drive, Torrance, CA 90502, USA, Tel: 310.525.7000, Fax: 310.525.7100
Email: sales@nearfield.com. Visit our website: www.nearfield.com