building 2 position, 2 axes mechanical system

[cave man]

I am trying to build a two axis, two position (each axis) mechanical system, and am just trying to pick cost-effective hardware/software. The motors need to hold at < 6 in-lb (~ 65 N-cm) of torque. Speed: slow, resolution: low. Basically no bells and whistles. I am looking at the NI PCI-7332 controller. The website gives me a bunch of accessories to choose from (below), but I don't what is needed, and what is extra. Specifically, are these needed and why?: the MID-7602, the SHC68-C68-S, UMI-7764 (I suppose these are needed for closed loop operation). And of course I will need motors for which I am still looking. Thanks.

778924-02 NI PCI-7332 Low Cost 2 Axis Stepper Only Controller 5 - 10 $ 799.00
778553-01 Motion Assistant SW for Motion Control Programming 1 - 2 $ 799.00
778003-01 MID-7602, 2 Axis Integrated Stepper Driver Power Unit, 115V 5 - 10 $ 1,999.00
186380-0R5 SHC68-C68-S, 68 pin VHDCI to 68 pin VHDCI, 0.5m 5 - 10 $ 150.00
Third-Part Drive Accessory Set
777978-02 UMI-7764(20Mhz Encoders)4Axis Mot Wiring Connectivity Mod No Cab. 5 - 10 $ 295.00
186381-02 SH68-C68-S, 68 pin VHDCI to 68 pin.05 Series D-Type, 2m 5 - 10 $ 89.00

[Jochen]

Hi,

Here are some comments to each of the components.
I hope that helps,

Jochen


778924-02 NI PCI-7332 Low Cost 2 Axis Stepper Only Controller 5 - 10 $ 799.00
This is the brain of the system that does all motion control tasks (step and trajectory generation, limit switch monitoring,...). This component is required

778553-01 Motion Assistant SW for Motion Control Programming 1 - 2 $ 799.00
This is an interactive software that helps prototyping your application. It comes with the NI-Motion driver (hardware driver for the PCI-7332) as a free evaluation version so you can give it a try and buy it if you find it valuable. This component is optional.

778003-01 MID-7602, 2 Axis Integrated Stepper Driver Power Unit, 115V 5 - 10 $ 1,999.00
The PCI-7332 can't drive a motor directly. Thus you need a power drive like the MID-7602. You can hook up the the PCI-7332 directly to the MID-7602. This device can drive two 2-phase stepper motors. You can either use the MID-7602 or a stepper drive from another vendor. This component (or a 3rd party drive) is required.

186380-0R5 SHC68-C68-S, 68 pin VHDCI to 68 pin VHDCI, 0.5m 5 - 10 $ 150.00
0.5 m cable to connect the PCI-7332 to the MID-7602. Longer cables are available. This component is required if you want to use the MID-7602.

Third-Part Drive Accessory Set
777978-02 UMI-7764(20Mhz Encoders)4Axis Mot Wiring Connectivity Mod No Cab. 5 - 10 $ 295.00
This is an active breakout box to connect the PCI-7332 to a 3rd party drive. Please have a look a this document for more information about the UMI. This component is required if you want to use a 3rd party drive.

186381-02 SH68-C68-S, 68 pin VHDCI to 68 pin.05 Series D-Type, 2m 5 - 10 $ 89.00
This is a 2 m cable to connect the PCI-7332 to the UMI-7764. This component is required if you want to use a UMI-7764.

[cave man]

Thank you very much! So, a basic working system would include:

controller
power driver
cable (controller to driver)
*and*
motors (I assume I wire the leads directly to the power driver)
encoders? (are these usually integrated with the motor, or separate? Do they connect to the power driver? From the UMI link, it sounds like they wire back to the UMI or controller.)

[Jochen]

There are a lot of different types of motors on the market. Some of them come with an encoder, some not and for some models an encoder is optionally available. The encoder is either connected to the MID-7602 or to the UMI-7764. Both devices provide a 5 V power supply to power the encoder.

With stepper motors encoders are optional. A lot of stepper applications run in an open loop configuration. The pre-condition for this is a well dimensioned motor that provides the required torque to be able to move the loads with the required acceleration and velocity.

I hope that helps,

Jochen

[cave man]

Yes it does!  Thank you!

Cave Man