Tyco 1540 - Manual (Page 44)

3.15.7 Reading Top – A1rt or A2rt
The top reading is limited to 120% of the nominal maximum value of the parameter. For
example, a 230V nominal can be adjusted from 0 to 276V. The minimum is zero or –120% if the
parameter is signed.
This screen allows a negative value to be specified as the top
reading. It will only be available if the parameter selected on
the previous screen can be negative. For these parameters, the
+/- column of Table 2 has a tick (
✓ ).
To accept the current value (‘-‘ for negative, no symbol for
positive), press >> to advance to the Alrb screen.
Use to select the ‘-‘ sign for a negative Reading or no symbol
for a positive Reading.
Press >> to accept the current sign and advance to the next
screen.
Use this screen to set the position of the decimal point.
This screen will not appear when the selected parameter is
frequency, as there is no choice of decimal point position.
Pressing the key will advance the decimal point position to
the right, illuminating the x1000 indicator as necessary and
wrapping the decimal point position when the highest available
position for the currently selected reading has been exceeded.
(Maximum resolution is 3 digits of the metered value.)
Select the required decimal point position and press >> to
confirm your selection. The next screen will appear.
Use this screen to set the value of the Reading Top
Set the three-digit Reading Top value using the method
described in Section 3.2 Number Entry Procedure.
Press >> to confirm your selection. The Confirmation screen
will appear.
42 Integra 1540, 1000, 0640, 0440, 0340, 0240 Issue 1 04/03
Sign edit
Decimal Point Position
Value Entry