FAST-Bi-1K5 – User’s Manual
35
Configurable AUX Input (AUX. IN)
The Auxiliary Input (AUX. IN) connector allows connecting an external signal
source or sensor that needs to be monitored, e.g. temperature sensors and field probes
(Hall sensor).
The Auxiliary Input accepts signals ranging from -10V to +10V and the conversion
value, identified by a scale-factor, can be stored in the PS in order to have the correct
reading from it.
Example:
for a temperature sensor having a 20 mV/°C gain, the input scale-factor
needs to be configured considering that the equivalent temperature at a potential ADC
full-scale of 5 V would be the following:
𝑇
𝐹𝑈𝐿𝐿−𝑆𝐶𝐴𝐿𝐸
=
5 𝑉
20 𝑚𝑉/°𝐶
= 250 °𝐶
Having the ADC a 16-bit resolution, the LSB value, equivalent to the scale-
factor that needs to be saved to the PS for a correct reading is:
𝐾
𝐿𝑆𝐵
=
𝑇
𝐹𝑈𝐿𝐿−𝑆𝐶𝐴𝐿𝐸
2
16
− 1
≅ 0.0038 °𝐶
K-type thermocouple connector
The option FB1K5OPT0001 includes the possibility to connect a K-type
thermocouple. The board mounts a MAX3 IC that digitizes the input signal
coming from the thermocouple via SPI-interface.
3.5
Output connectors
The load needs to be connected to the output connector placed on the PS rear
panel. Two types of connectors are provided depending on the maximum output voltage
of the PS.
High-Current (HC) Models
For High-Current models (HC, see
), busbars terminals are present on
the rear panel, see
, to offer a convenient and reliable way of connecting
the load.
shows the output terminals with the protecting cover, while
shows a proper connection with the load cables (refer to section 2.5 for
proper screws and cables characteristics).
