AMX Input/Output Control Card NXC-I/O10 Installation Manual page 2

Pinouts, Signals, and I/O Mode Functions:
NXC-I/O10 Pinouts, Signals, and I/O Mode Functions
Pin Signal SW mode Functions
1 Common Signal ground
2 I/O #1 Input #1
3 Common Signal ground
4 I/O #2 Input #2
5 Common Signal ground
6 I/O #3 Input #3
7 Common Signal ground
8 I/O #4 Input #4
9 Common Signal ground
10 I/O #5 Input #5
11 Common Signal ground
12 I/O #6 Input #6
13 Common Signal ground
14 I/O #7 Input #7
15 Common Signal ground
16 I/O #8 Input #8
17 Common Signal ground
18 I/O #9 Input #9
19 Common Signal ground
20 I/O #10 Input #10
3000 RESEARCH DRIVE, RICHARDSON, TX 75082 • 800.222.0193 • fax 469.624.7153 • technical support 800.932.6993 • www.amx.com
VO mode functions
Common #1
Input #1
Common #2
Input #2
Common #3
Input #3
Common #4
Input #4
Common #5
Input #5
Common #6
Input #6
Common #7
Input #7
Common #8
Input #8
Common #9
Input #9
Common #10
Input #10
For full warranty information, refer to the AMX Instruction Manual(s) associated with your Product(s).
©2007 AMX. All rights reserved. AMX and the AMX logo are registered trademarks of AMX.
AMX reserves the right to alter specifications without notice at any time.
Setting the Voltage Clamp Jumper (+12V or Open):
Set the V-Clamp jumper (J31) to +12V (default) to clamp any voltage
connected to I/O ports 1-10 to 12 V. Set to OPEN for connections that will
draw more than 12 V. Remember, the +12V and OPEN settings are only
enabled when the I/O ports are set to SW mode.
+12V Mode (default) and Open Mode settings
+12V mode setting (default)
FIG. 4
V- Clamp jumper (J31) settings
Use the default setting for all loads that require less than 12V.
When this jumper is set to Open, and an I/O port is used as an output; the
I/O port is rated at 85mA @ 28VDC.
Important! When this jumper is set to Open, it is the technician's
responsibility to clamp the external source relay anytime the voltage
exceeds 12 V.
The source relay should always be clamped, even if the voltage exceeds
12 V.
Contact the relay manufacturer to determine the size of the clamp diode to
place on the source relay.
12/07
Open mode setting
93-2021 REV: C