What is the difference between the PCI-7390 and the PCI-733x?
Hardware: Motion Control>>Controllers>>PCI-7390
Problem: Both the PCI-7390 and the PCI-733x controller can operate in a p-command (Position Command) mode and a stepper mode, what is the difference between the two motion control boards?
Solution: From a settings and Application Programming Interface (API) perspective, both the PCI-7390 and the PCI-733x are nearly identical. From a hardware interface perspective, the PCI-7390 has many extra desirable features. These features are detailed below.
- Optical Isolation: Every single Input and Output on the PCI-7390 is 30V optically isolated.
- Configurable Sinking and Sourcing: The 8 general purpose Input and 8 general purpose output digital I/O lines have jumpers which allow you to change them from sinking to sourcing.
- 100 Pin Connector: Unlike the other NI-Motion Controllers, the PCI-7390 uses a 100 pin connector to interface with drives and breakout boxes.
- Direct Connect Configurations: Custom cables and interfaces can be bought to directly connect the PCI-7390 to the Yaskawa Sigma II,
the Mitsubishi MR-J2S, and the Panasonic
Minas A drive.
NOTE: Direct Connect Cables are available for the 733x, 734x, and 735x, for National Instruments drives and some Primatics, Compumotor, MICOS, Bayside, Design and Assembly Conecpts (DAC), and National Aperature Drives. (Drive Advisor)
- No Direct Connectivity to National Instruments MID Drives: Due to the 100 pin connector, MID Stepper drives will not directly connect to the PCI-7390.
- Different Digital I/O Connectivity: The organization and number of digital I/O lines is different on the PCI-7390 due to the added isolation.
- Active Open/Closed replaces Active High/Low: Because sinking and sourcing of the Digital I/O is now determined by a jumper setting, Active High/Low was changed to Active Open/Closed. Thus, it is impossible to specify a ditial I/O line to be Active High or Active Low, because once the Sinking/Sourcing jumper is switched the Active state will be incorrect. In order to remain syntatically correct, Active High/Low has been replaced with Active Open/Closed (referring to the state of the sinking/sourcing transistor). If you find this confusing, simlpy try Active Open and then Active Closed and one will most likely work.
- 24V Digital I/O: The PCI-7390 supports 24V digital I/O without the need for the UMI-7774.
NOTE: All of this information was acquired from the
PCI-7390 user's manaul.
Related Links: NI PCI-7390: 4-Axis Controller for PCI with Isolation
NI PCI-7390 User Manual
Drive Advisor
Attachments:
Report Date: 12/07/2006
Last Updated: 02/07/2007
Document ID: 446JLDAJ
