Appendix B
Motion Connection Accessories
B-2
ni.com
MCA-7790M LEDs
The MCA-7790M 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-7790M Axis I/O Signals
Table B-1 shows the signals from the Axis I/O screw terminal on the
MCA-7790M to the PCI-7390 and from the drive to the MCA-7790M.
Table B-1.
Axis I/O 1 through 4 to PCI-7390 and Mitsubishi J2S Series Drive
Accessory Pin
Number
PCI-7390 Signal
†
Drive Signal
1
Isolated Ground (IGND)
—
2
Isolated Ground
—
3
Is5 V OUT
—
4
+24 V
‡
—
5
Isolated Ground
—
6
Axis <1..4> General-Purpose
Input 0
‡
—
7
Axis <1..4> Breakpoint
(Position Compare)
—
8
Axis <1..4> Trigger (Position
Capture)
—
9
—
EMG (Shutdown/emergency stop)
††
10
Axis <1..4> Home Switch
—
11
Axis <1..4> Reverse Limit Switch
—
12
Axis <1..4> Forward Limit Switch
—
13
Isolated Ground
—
14
—
LG (Control common)
15
Is5 V OUT
16
+24 V
‡
ALM (Trouble)
17
—
RES (Reset)