442 Properties of the Modules
imc CANSAS Users Manual - Doc. Version 1.9 - 05.12.2014© 2014 imc Meßsysteme GmbH
6.23 µ-CANSAS-B1
1-channel bridge amplifier
1 channel on 8-Pin Phoenix MPT0,5/8
Technical data imc µ-CANSAS-B1.
imc µ-CANSAS-B1 is a 1-channel differential measurement
amplifier with 24-bit A/D-conversion for bridge
measurements The conditioned and digitalized signal from
analog sensors can be outputted as a CAN- or CANopen
signal. imc µ-CANSAS-B1 is particularly designed for use in
extremely warm environments.
The imc µ-CANSAS-B1’s bridge channel has a DC voltage source (5V) to supply of the measurement
bridge.
Synchronization is performed exclusively as Slave according to the CAN1-protocol and is provided
under the node Special functions.
Beside working with CAN-bus per default, the module is also configurable as CANopen module.
The functions of the LEDs are described in section imc CANSAS blinking codes.
6.23.1 DC-bridge measurement
The current carrying capacity of the imc CANSAS module’s voltage source allows the connection of 120
measurement bridges in all input ranges.
The Sense-terminal provides compensation of voltage dissipation along long cables, which would
otherwise cause noticeable measurement errors. If only plain cables are available, so that it is not
possible to connect the Sense-line directly to the sensor, then in all cases, +Sense must be connected
with +VB and -Sense with -VB at the terminal connector.
Bridge measurements are relative measurements (ratiometric procedure), in which there is an
evaluation of what fraction of its supply input the bridge outputs (typically in the 0,1% range,
corresponding to 1 mV/V). Calibration of the system is based on this ratio, the bridge input range. This
means that the actual magnitude of the bridge supply does not matter and need not necessarily lie
within the measurement’s rated total accuracy.
The following bridge types can be used as sensors with imc µ-CANSAS-B1:
Full bridge
Half bridge
516
220
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