DI-500/510 Series and DI-750/760 Series Hardware Manual
5B Modules
35
DI-5B40/41 Analog Voltage Input Modules, Wide Bandwidth
DESCRIPTION
Each DI-5B40 and DI-5B41 wide bandwidth voltage input module provides a single channel of analog input which is
amplified, isolated, and converted to a high level analog voltage output (see block diagram). This voltage output is
logic-switch controlled, allowing these modules to share a common analog bus without the requirement of external
multiplexers.
The DI-5B modules are designed with a completely isolated computer side circuit which can be floated to ±50V from
Power Common, pin 16. This complete isolation means that no connection is required between I/O Common and
Power Common for proper operation of the output switch. If desired, the output switch can be turned on continuously
by simply connecting pin 22, the Read-Enable pin to I/O Common, pin 19.
The input signal is processed through a preamplifier on the field side of the isolation barrier. This preamplifier has a
gain-bandwidth product of 5MHz and is bandwidth limited to 10kHz. After amplification, the input signal is chopped
by a proprietary chopper circuit. Isolation is provided by transformer coupling, again using a proprietary technique to
suppress transmission of common mode spikes or surges. The module is powered from +5VDC, ±5%.
A special input circuit on the DI-5B40 and DI-5B41 modules provides protection against accidental connection of
power-line voltages up to 240VAC.
Ordering Information
MODEL
INPUT RANGE
OUTPUT RANGE
DI-5B40-01
-10mV to +10mV
0V to +5V
DI-5B40-02
-50mV to +50mV
0V to +5V
DI-5B40-03
-100mV to +100mV
0V to +5V
DI-5B40-1042*
-1v to +1V
0V to +5V
DI-5B41-01
-1V to +1V
0V to +5V
DI-5B41-02
-5V to +5V
0V to +5V
DI-5B41-03
-10V to +10V
0V to +5V
DI-5B41-07**
-20V to +20V
0V to +5V
DI-5B41-09**
-40V to +40V
0V to +5V
*Required for DI-500-HV high voltage option.
**CSA certification pending.
Anti-Aliasing
Filter
+In
–In
–EXC
Backpanel
Term Block
1
2
NC
6
5
3
NC
Surge
Suppression
and
Protection
Isolated
Field-Side
Power
4
3
2
1
+EXC
–V
+V
V
IN
4
NC
–V
LPF
+V
Power
Oscillator
Isolated
Computer-Side
Power
V
OUT
20
22
I/O Common
RD EN\
+5V
17
16
Power Common
NC
19
Isochopperª
Amplifier
Pat Pending
Free Datasheet http://www.datasheet4u.com/
