Maintenance
Marathon MR Rev. E2 04/2011 51
Heater control temperature over range
Heater control temperature under range
Internal temperature over range
Internal temperature under range
Wide band detector failure
Narrow band detector failure
Attenuation too high (>95%)
Attenuation too high >95%
("dirty lens", relay will go to “alarm” state)
2-color temperature under range
2-color temperature over range
Wide band temperature under range
Wide band temperature over range
Narrow band temperature under range
Narrow band temperature over range
* only available through RS485
** 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%)
Table 9: 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 10: Current Output Values in accordance to an Error
If two errors occur simultaneously, the higher priority error is the one that is presented on the LED’s
digital and analog outputs. For example, in 2-color mode, if the internal ambient is too high and the
attenuation is too high, the unit outputs EIHH on the LED’s and digital output and 21 mA on the
analog output. However, since 2-color wide band and narrow band temperatures may all be
presented simultaneously through RS485, their over and under range conditions are independent.
To Next Page
Loading...
