Overshoot Monitoring

At a Glance

The TSX AEY 800 and TSX AEY 1600 modules give the choice of 6 ranges of voltage or current for each of their inputs. For the selected range, the module monitors over/undershoot: it checks that the measurement is between a lower and upper limit.

This check is always enabled.

Generally speaking, the modules will authorize an over/undershoot by 5% of the positive electrical part of the range.

Measurement zones

The measurement scale is divided into three zones:

nominal zone

This is the measurement scale that corresponds to the range selected,

overshoot zone

This is the zone above the upper limit,

undershoot zone

This is the zone below the lower limit.

Over/undershoot indications

In the over/undershoot zones, there is a risk of saturation of the measurement string , which is signaled by:

Bit name	Meaning (when = 1)
%Ixy.i.ERR	Channel fault
%MWxy.i.2:X1	Range over/undershoot on the channel

Over/Undershoot limits

The over/undershoot limit values are as follows:

Range	Lower limit	Lower limit	Values available by default in standardized format	Minimum limit in user-defined format	Maximum limit in user-defined format
+/-10V	-10.5V	+10.5V	+/- 10500	Min-5%x(Max-Min)/2	Max+5%x(Max-Min)/2
0..10V	-0.5V	+10.5V	-500...10500	Min-5%x(Max-Min)/2	Max+5%x(Max-Min)/2
0..5V	0V	+5.25V	-500...10500	approx. -10mV	Max+5%x(Max-Min)/2
1..5V	0.8V	+5.25V	-500...10500	Min-5%x(Max-Min)/2	Max+5%x(Max-Min)/2
0..20mA	0mA	+21mA	0...10500	approx. -40 µA	Max+5%x(Max-Min)/2
4..20mA	+3.2mA	+20.8mA	-500...10500	Min-5%x(Max-Min)/2	Max+5%x(Max-Min)/2

NOTE: Min designates the minimum value indicated by the user. Max designates the maximum value indicated by the user.