herunterladen
a
AN-533
APPLICATION NOTE
One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106 • 781/329-4700 • World Wide Web Site: http://www.analog.com
INTRODUCTION
The 5B Series includes a number of multichannel
backplanes and mounting cards that provide a complete
signal conditioning solution. Four backplanes currently
available, the 16-channel 5B01 and 5B02 and the 8-chan-
nel 5B08 and 5B08-MUX, provide different system con-
figuration options for the user. Models 5B01 and 5B08
I/O signals are independently available, while model
5B02 and 5B08-MUX I/O signals are controlled via an on-
board multiplexer providing a bus for input signals and
a separate bus for output signals. With all backplanes,
5B Series modules can be mixed or matched and may be
changed without disturbing field wiring or system
power. The 5B03 and 5B04, one- and two-channel
mounting cards, allow an economical means to handle a
few remote signals. A single-channel mounting card,
AC1360, is available for ease of complete 5B Series
module evaluation.
Both 16-channel backplanes can be mounted in a
19" × 3.5" panel space, such as the rack mount kit, model
AC1393. The 8-channel backplanes can also be mounted
in the AC1393. The one- and two-channel mounting
cards, models 5B03, 5B04 and AC1360, are DIN rail com-
patible using available hardware. All backplanes and
mounting cards provide individual channel screw termi-
nals for field connections. These connections satisfy all
transducer inputs and process current outputs and pro-
vide sensor excitation when necessary. A cold junction
temperature sensor, model AC1361, is supplied on each
channel to accommodate thermocouple modules (5B37
or 5B47). All backplanes and mounting cards require an
external regulated +5 V dc power supply.
Applying the 5B Series Backplanes and Mounting Cards
MODEL 5B01 BACKPLANE
The 5B01, diagrammed in Figure 1, is a 16-channel back-
plane that provides single-ended, high level analog
input/output pins on the system connector. It is pin com-
patible with Analog Devices’ 3B Series applications.
(Note, however, that 5B Series modules provide a ±5 V
output swing rather than the ±10 V swing provided by
3B Series modules.)
Model 5B01 System Connectors
Signal connections between the 5B01 backplane and the
associated measurement and control system are made
at P1 and P2. These connectors are identical electrically.
The redundant connectors may be useful if a 5B01 is
used for both analog input and analog output and the
data acquisition system has separate input and output
connectors. Figure 2 is a diagram of the voltage I/O
provided on the P1 and P2 connectors of the 5B01
backplane.
2
4
6
8
10
12
14
16
18
20
22
24
26
CH 11
CH 10
COM
CH 9
CH 8
COM
CH 12
CH 13
COM
CH 14
CH 15
COM
NC
1
3
5
7
9
11
13
15
17
19
21
23
25
COM
CH 4
CH 3
COM
CH 2
CH 1
COM
CH 0
CH 5
CH 6
COM
CH 7
SENSE
NC = NO CONNECT
TOP VIEW
Figure 2. 5B01 and 5B08 System Connector Pinout
VOLTAGE
I/O
+5V
POWER
CHANNEL
0
CHANNEL
1
CHANNEL
14
CHANNEL
15
Figure 1. 5B01 Functional Block Diagram
