Fluke endurance series, User Manual

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Endurance® Series
Users Manual
82
Table 11: Fail-safe Error Codes
Condition 2-Color 1-Color
(wide band)**
1-Color*
(narrow band)**
Priority
Heater control temperature over range ECHH ECHH ECHH 1 (high)
Heater control temperature under range ECUU ECUU ECUU 2
Internal temperature over range EIHH EIHH EIHH 3
Internal temperature under range EIUU EIUU EIUU 4
Wide band detector failure EHHH EHHH <temperature> 5
Narrow band detector failure EHHH <temperature> EHHH 6
Energy too low EUUU <temperature> <temperature> 7
Attenuation too high (>98%) EAAA <temperature> <temperature> 8
Attenuation too high >95%
("dirty lens", relay will go to “alarm” state) <temperature> <temperature> <temperature> 9
2-color temperature under range EUUU <temperature> <temperature> 10
2-color temperature over range EHHH <temperature> <temperature> 11
1-color temperature (wide) under range <temperature> EUUU <temperature> 12
1-color temperature (wide) over range <temperature> EHHH <temperature> 13
1-color temperature (narrow) under range <temperature> <temperature> EUUU 14
1-color temperature (narrow) over range <temperature> <temperature> EHHH 15 (low)
* only available via RS485 or LAN / Ethernet command
** Wide and narrow band stands for the first and the second wavelength in 2-Color mode
*** Note that the activation levels for these conditions may be set to different values.
(e.g., "dirty lens" at 95%, EAAA at 98%)
11.2.2. Analog Output current values in dependence of Fail-Safe Error Codes
The relay is controlled by the temperature selected on the display. If any failsafe code appears
on the display, the relay changes
to the “abnormal” state. The exception is the “dirty window”
condition. This causes the relay to change state, leaving a normal numerical temperature
output.
Table 12: Current Output Values in accordance to an Error
Error Code 0
– 20 mA Output
4
– 20 mA Output
no error according to temperature according to temperature
ECHH 21 to 24 mA 21 to 24 mA
ECUU 0 mA 2 to 3 mA
EIHH 21 to 24 mA 21 to 24 mA
EIUU 0 mA 2 to 3 mA
EUUU 0 mA 2 to 3 mA
EHHH 21 to 24 mA 21 to 24 mA
EAAA 0 mA 2 to 3 mA
If two or more errors occur simultaneously, the error with the highest priority overrules the lower
priority errors. The highest priority error will be displayed on the 7-segment temperature display
and the assigned analog output (current) value (see Table 12) will be set. For instance, in 2-
Color mode, if the internal ambient temperature is over the limit and the attenuation is to high
too, the unit outputs EIHH to the temperature display and sets an analog output current of 21
mA on the analog current loop output lines. However, since 2-Color wide band and narrow band
temperatures may all be presented simultaneously through RS485 or LAN / Ethernet interface,
their over and under range conditions are independent.