Yokogawa Removable Chassis DX1000N - Manual (Page 107)

Measurement Channels and
Alarms
IM 04L41B01-01E
3-13
1
2
3
4
5
6
7
8
9
10
11
12
App
Index
Setup Items
• First-CH, Last-CH
Select the target channels. The target channels are common with the other items that
are displayed on the screen.
• Alarm > 1, 2, 3, and 4
For each alarm, 1 to 4, select On to enable it.
• Alarm > Type
Select the alarm type.
Settings Name Description
H High limit alarm –
L Low limit alarm –
h Difference high limit alarm Can be specified on channels set to difference computation.
l Difference low limit alarm Can be specified on channels set to difference computation.
R High limit on rate-of-change alarm –
r Low limit on rate-of-change alarm –
T Delay high limit alarm –
t Delay low limit alarm –
Alarms on channels set to difference computation are inserted at the following
positions.
Input value
Measured value on the reference channel
H, L, T, t R, r, h, l
Measured value
-
• Alarm > Value
Set the alarm value for the selected alarm type.
When the Mode of the Channel Is Set to Volt, TC, RTD, or DI
Type Value Example of a Range of Alarm Values
H, L Value in the measurable range –2.0000 to 2.0000 V for 2 V range
R, r 1 digit to the upper limit of the width 0.0001 to 3.0000 V for 2 V range
of the measurable range
However, less than or equal to 30000 0.1 to 1760.0°C for thermocouple type R
excluding the decimal point.
T, t Same as H and L. Same as H and L.
When the Mode of the Channel Is Set to Delta
Type Value Example of a Range of Alarm Values
H, L Value in the measurable range –2.0000 to 2.0000 V for 2 V range
h, l Value in the measurable range –1760.0 to 1760.0°C for thermocouple type R
R, r 1 digit to the width of the measurable 0.0001 to 3.0000 V for 2 V range
range
However, less than or equal to 30000 0.1 to 1760.0°C for thermocouple type R
excluding the decimal point.
T, t Same as H and L. Same as H and L.
When the Mode of the Channel Is Set to Scale, Sqrt, or 1-5V
Type Value Example of a Range of Alarm Values
H, L –5% to 105% of the scale width. –5.0 to 105.0 when the scale is 0.0 to 100.0
However, within –30000 to 30000 –120.00 to 300.00 when the scale is –100.00
excluding the decimal point. to 300.00
R, r Within 1 to 30000 excluding the 0.1 to 3000.0 when the scale is 0.0 to 100.0
decimal point. 0.01 to 300.00 when the scale is –100.00 to
300.00
T, t Same as H and L. Same as H and L.
3.7 Setting Alarms on Channels