Table of Contents
Advertisement
Advanced Setup Parameters
Advanced parameters you can set for the thermocouple module consist of:
• Notch filter - Select the Notch Filter for the analog to digital converter.
At higher frequencies, faster sample rates are possible
– 50 Hz
– 60 Hz (default)
– 100 Hz
– 120 Hz
– 200 Hz
– 240 Hz
– 300 Hz
– 400 Hz
– 480 Hz
If the filter value is changed, the module may require calibration to meet
specifications.
• Digital filter - A digital filter is available on this module. You set a time
constant which is used in the equation:
Yn = Yn-1 + (dt / (dt + T
Where: Yn = new data
Yn-1 = old data
dt = Channel Update Rate in milliseconds
T
= digital filter time constant
A
Xn = present unfiltered data
T
can be an integer from 0 to 10,000 ms. If set to 0, the filter is
A
disabled.
• Cold Junction Offset - If you do not use a 1734-RTBCJC removable
terminal block, enter an estimate for the junction temperature here.
Enter the value in hundreths of degrees Celsius, even if another scale is
selected (2500 implies 25.00 °C).
• Enable alarms latch - If enabled, alarms for this channel latch
FAULTED until a Latch Reset command is received.
The alarms effected are:
– Input Status
– Low and High level
– Range
• Disable alarms - If Alarms are Disabled, all alarms for this channel show
No FAULT. This is useful for unused channels.
) * (Xn-Yn-1)
A
Publication 1734-UM004F-EN-E - December 2012
Configure Your Module
25
Advertisement
Table of Contents
