imc CRONOS-PL/-SL/compact - Getting Started, Version 5 R 7 - 2018-06-28© 2018 imc Meßsysteme GmbH
22 Start of operation with the Hardware
Error Conditions
If the UPS Status LED flashes alternating red and green, a long term continuous battery operation is
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<75
±
5°C (1) . In this case, the buffer time
constant of the UPS is reduced to 15 seconds, regardless of the configured setting. Thus, in case of an
outage of the external power supply automatic shutdown procedure will already be initiated after 15
seconds, stopping the current measurement, storing all data and turning off the device.
The following error conditions are indicated by LED signal patterns:
Battery is not present or cannot
be detected
Internal Error (UPS may not be
operable)
Battery operation is inhibited and the UPS is
not operable
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±
5°C (2)
(1) ±5°C due to tolerances of internal temperature measurement of the battery
(2) Internal protection circuitry prevents discharge at temperatures above
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± 5°C. The UPS may only be operable again
once the batteries have cooled down to 65°C.
The following picture display the front of devices with integrated Li-ion batteries. The exact position of
status LED can differ between each system.
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