PXI-7931 - QNV Solutions
PXI Switch
PXI-7931
4x8 2-Wire Matrix Module
1
Features
PXI specifications Rev. 2.2 compliant
3U Eurocard form factor, CompactPCI
compliant (PICMG 2.0 R3.0)
PICMG 2.1 R2.0 CompactPCI Hot Swap
specifications compliant
Configuration determined by termination board
Up to 32 cross-point DPDT (2 Form C)
non-latching relays
Contact rating
2 A switching, 2 A carrying
220 VDC, 125 VAC
Onboard 1 k-sample scan list for deterministic
scanning
Handshaking signals for external instruments
synchronization
Design for safety-critical applications
Hardware emergency shutdown with
programmable relay safety status
Watchdog timer from 1 ms to 420 s with
programmable relay safety status
8 auxiliary 3.3 V/TTL digital inputs/outputs with
5 V tolerance
Software
Solutions
Multiple modules synchronization through
PXI trigger bus and star trigger
Versatile matrix configuration with
termination board
Fully software programmable
Operating Systems
Windows Vista/XP/2000/2003
Recommended Software
VB/VC++/BCB/Delphi
DAQBench
Driver Support
ADL-SWITCH for Windows
2
PXI/
CompactPCI
Platforms
3
Modular
Instrument
4
PXI/
CompactPCI
Modules
5
Bus
Interface
6
GPIB
Interface
Introduction
ADLINK PXI-7931 is a matrix module with 32 cross-point 2-wire relays (DPDT, 2 Form C). The default
configuration of the PXI-7931 itself is a 4-group 2x4 2-wire matrix. With the termination board, TB-6231-01,
users could flexibly choose one of the configurations: one 4x8, two 4x4, one 2x16, two 2x8 and four 2x4. Any
contact of the PXI-7931 can connect to other contacts, individually or in combination. The PXI-7931 matrix
module simplifies the wiring and makes it easy to change the internal connection path.
7
Pin Assignment
2x4x4 configuration
The contact position of the relays can be changed either by direct software commands or by following the
instructions previously stored in the onboard scan list. The scan list advances upon the trigger from external
measurement devices, such as a DMM. The scan list could also advance when the scan-delay timer expires.
In the PXI-7931, PXI trigger functions are supported and software programmable. Multiple modules can
therefore be synchronized without additional field wiring.
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51.
52.
53.
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57.
58.
59.
60.
61.
62.
Specifications
Source Wire
2-wire
Matrix, with TB-6231-01
One 4x8, Two 4x4, One 2x16,
Two 2x8, Four 2x4
Relay Characteristics
Number of cross points: 32 (2-wire)
Relay type: DPDT (2 Form C), non-latching
Switching capacity
Max. switching current: 2 A
Max. switching voltage: 220 VDC, 125 VAC
Max. switching power: 60 W
Max. carrying current: 2 A
Failure rate*: 10 µA @ 10 mVDC
Contact resistance: 100 mΩ max.
Relay set/reset time
Operate time: 4 ms max.
Release time: 4 ms max.
Expected life
Mechanical life: 108 operations min.
Electrical life : 5x105 operations min.
(1 A @ 30 VDC, resistive load)
Data transfer: programmed I/O
Auxiliary Digital I/O
Numbers of channel: 8 inputs/outputs
Compatibility: 3.3 V/TTL (5 V tolerant)
Handshaking Signals
Programmable polarity
Logic level: 3.3 V/TTL (5 V tolerant)
TRG_IN source: AUX1, PXI trigger bus, PXI star
trigger input
S_ADV destination: AUX0, PXI trigger bus,
PXI star trigger outputs (star trigger slot)
Safety Functions
Emergency shutdown
Logic level: 3.3 V/TTL (5 V tolerant)
Active: logic low
Watchdog timer
Base clock available: 10 MHz, fixed
Counter width: 32-bit
General Specifications
I/O Connector: 62-pin D-sub male
Operating temperature: 0 to 55˚C
Storage temperature: -20 to 70˚C
Relative humidity: 5 to 85% non-condensing
Power requirements: (when all relays are ON)
Device
PXI-7931
+5 V
1A
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C8+
C8C9+
C9C10+
C10C11+
C11C12+
C12C13+
C13C14+
C14C15+
C15N/C
N/C
AUX4
+5Vout
AUX1/TRG_IN
+3.3 V
400 mA
Dimensions
160 mm x 100 mm (not including connectors)
Certificate
EMC/EMI: CE, FCC Class A
Termination Boards
C0+
C0C1+
C1C2+
C2C3+
C3C4+
C4C5+
C5C6+
C6C7+
C7N/C
AUX3
AUX6
AUX7
TB-6231-01
Matrix Switch Termination Board with one
62-Pin D-Sub Female Connector
(Cables are not included. For information on
mating cables, refer to Section 12.)
8
1. R0+
2. R03. R1+
4. R15. R2+
6. R27. R3+
8. R39. R4+
10. R411. R5+
12. R513. R6+
14. R615. R7+
16. R717. N/C
18. AUX2/SHDNn
19. AUX5
20. GND
21. AUX0/S_ADV
Ordering Information
PCI/PCI
®
Express
DAQ Cards
PXI-7931
4x8 2-Wire Matrix Module
* Failure rate indicates the lower limit of switching
capacity of a relay contact at a reliability level
of 60 %
PCI/PCI
®
Express
DIO Cards
9
PC/104-Plus
Modules
10
ISA DAS/
DIO Cards
11
System
Product
12
Wiring
Termination
Boards
13
Motion, HSL,
Vision, COM
& GEME
14
Remote I/O
Modules
15
Industrial
Computers
www.adlinktech.com 3-13
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