IO-PT 400, IO-PT 4K
I / O E x p a n s i o n M o d u l e s
Unitronics
7
Notes:
1. Alpha
( ) type is selected in software. The PT default setting is 385.
2. The input analog value represents the temperature value as follows:
Analog value-262 Actual measured temperature: 26.2
°
C
3. The temperature values can also indicate certain faults as shown in the following table.
Value Possible
Cause
-10000 (-1000°)
Input temperature is out of the permissible range
(under -50°C)
-I signal is not connected
Sensor is short-circuited
10000 (1000°)
Input temperature is out of the permissible range
(PT: over 460°C) (NI: over 232° C) (NI120: over 172
°
C)
Sensor is not connected to input
+I or +V signals are not connected
-I and –V signals are not connected