Hydran* 201
i
Installation Guide
Page 34
17996 Rev5, August 2013
5.10
Verifying the Hydran 201T
i
Operation
1.
Power up the H201T
i
.
2.
Verify the operation of the H201Ti by observing the six small LED diagnostic
indicators on the right side of the I/O module (from left to right in Figure 19
below):
•
C Heating state LED
(yellow):
-
The LED must remain lit if the internal temperature is below the set
point.
-
The LED must flash if the internal temperature is close to the set point.
-
The LED must remain off if the internal temperature exceeds the set
point.
•
-5 - Regulated -5 Vdc supply LED
(green): It must be lit.
•
+5 - Reg5 Vdc supply LED
(green): It must be lit.
•
OK - System state indicator LED
(green): It must be lit.
•
HH - High-High alarm state LED
: (red) It must be off.
•
H - High alarm state LED
: (red) It must be off.
Figure 19: LED Indicators on the Right Side of the I/O Module
