Installation guide

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55
Cooper Bussmann BU-905U-L Wireless I/O Configuration Manual
Featur
e Description Example
Thermocouple This setpoint is associated with the thermocouple input and can also be
Setpoint configured to read millivolt values.
You can select one of ten different low setpoint/high setpoint pairs by
changing the position of the rotary switch on the front panel of the
BU-905U-L-T module. Alternatively you can set the thermocouple setpoint
threshold values to single values independent of the rotary switch position
by selecting the Single tab.
NO indicates the switch position for this setpoint setting.
Low SP and High SP are the low and high threshold values.
You can also show the values of the high and low setpoints in different
formats by setting the Units field to:
• Raw - data format used by Cooper Bussmann units for transferring
analog values.
For millivolt measurement, 16384 corresponds to zero millivolts, or 0%
reading; 49152 corresponds to 100 millivolts or 100% reading
For temperature measurement, 16384 corresponds to the bottom of the
thermocouple range; 49152 corresponds to the top of the thermocouple range.
• mA –actual milliamp value that would be output if the thermocouple input
was sent to a 4-20mA output. (Not normally used for thermocouple input).
• % - percentage of full scale, with minimum value being 0% and maximum
value being 100%.
For more information, see Selecting thermocouple tables on page 58.
Temperature This setpoint is associated with the module’s internal temperature
measurement. Setpoint The setpoint comes on when the module temperature
moves below the low setpoint, and will go off when the module temperature
moves above the high setpoint.
Supply voltage Low This setpoint is associated with the module’s supply voltage monitoring.
The setpoint turns on when the supply voltage falls below the low setpoint,
and turns off when the supply voltage moves above the high setpoint.
3A1579Rev1.4