Appendix B
Motion Connection Accessories
©
National Instruments Corporation
B-13
Yaskawa Sigma II Series Drive Connection Accessory
The NI MCA-7790Y accessory (NI part number 779611-01) provides
connection between the PCI-7390 and Yaskawa Sigma II series drives.
Connecting Yaskawa Drives to the PCI-7390
To connect a Yaskawa drive to the PCI-7390, connect a 50-pin cable from
the drive to the MCA-7790Y, then connect a SCSI 100-pin cable from the
MCA-7790Y to the PCI-7390. Finally, connect the MCA-7790Y to a
+24 V power supply using the IGND +24 V two-terminal screw terminal.
Note
The Inhibit-Out (Servo ON) input in the drive is sourcing. For compatibility between
the drive and the controller, set the general-purpose output jumper on the PCI-7390 for
sinking. The MCA-7790Y internally connects VI_COM <1..4> to +24 V which configures
all PCI-7390 inputs as sourcing.
MCA-7790Y LEDs
The MCA-7790Y has three LEDs per axis that indicate forward limit,
reverse limit, and home status. Two additional LEDs indicate the status of
the +24 V input power supply and the +5 V OUT signal from the PCI-7390.
MCA-7790Y Axis I/O Signals
Table B-6 shows the signals from the Axis I/O screw terminal on the
MCA-7790Y to the PCI-7390 and from the drive to the MCA-7790Y.
Table B-6.
Axis I/O 1 through 4 to PCI-7390 and Yaskawa Sigma II Series Drive
Accessory Pin
Number
PCI-7390 Signal
†
Drive Signal
1
Axis <1..4> Breakpoint
(Position Compare)
—
2
Axis <1..4> Trigger (Position
Capture)
—
3
Is5 V OUT
—
4
Isolated Ground (IGND)
—
5
+24 V
‡
—
6
Isolated Ground
—
