Measurement Computing WBK15 - Manual

WBK15, 5B Isolated Signal Conditioning Module 988396 WBK15, pg. 1
WBK15 5B Isolated Signal-Conditioning Module
Description …… 1
Hardware Setup …… 2
Configuration …… 2
Connection …… 3
Power …… 4
Safety Concerns …… 4
Using Fastener Panels to Stack Modules …… 4
Software Setup …… 5
WBK15 – Specifications …… 7
Description
The WBK15 module can accommodate eight 5B isolated-input signal-conditioning modules for use with the
WaveBook. The WaveBook can accommodate 8 WBK15s for a maximum of 64 expansion channels. The
WaveBook scans WBK15’s channels at the same 1 µs/channel rate that it scans all WBK analog inputs,
allowing it to measure all channels of a fully configured 72-channel system in 72 µs.
Other features of WBK15 include:
• Built-in power supply that operates from 10 to 30 VDC and can power a full complement of 5B
modules (even with bridge excitation).
• Removable, plug-in screw-terminal blocks for convenient connection of 5B modules.
• On-board cold-junction sensing for thermocouple 5B modules.
• For each 5B module, 1500 V isolation from the system and from other channels.
N
N Buffer
Amp
DC Power
Input &
Expansion
DIN-5
Power
Switch
+V
GND
Isolated
+5, ±15 VDC
Power
Supply
+5 V Filters
+15 V -15 V
Bipolar
Offset
Amp
Control
DAC
5.000 V
Reference
Channel
Selection
MUX
In
te
rnal J
u
m
per
s
CH5
CH4
CH6
CH7
CH8
CH3
CH2
CH1
Input
Terminal
Block
Channel 1
Channels 2-8 identical
Current-Sense
Resistor
Output
MUX
µP &
Control Logic
Analog
Output to
WaveBook
Expansion
Control
From
WaveBook
Status
LEDs
EEPROM
BNC
5B
Module
Socket
#1
Buffered
Low-
Pass
Filter
Cold
Junction
Sensor
WBK15 Block Diagram