HINT
When internal RTC battery becomes flat, controller function (e.g. Ready for stand by) does
not change until controller power supply is switched off. Some time before the battery is
completely exhausted, a warning message appears in Alarmlist: "RTCbatteryFlat".
After the next power switch on (with flat battery already) controller:
Stays in the INIT state (not possible to run genset)
All History records disappear except of “System log: SetpointCS err” record
Time and Date values are set to zero
Statistics values are random
20.2. Operating conditions
IG-NT, IG-NTC, IM-NT -20 +70°C
IG-NT-LT, IG-NTC-LT, IM-NT-LT -40 +70°C
IS-NT-system** operating temperature -20..+70
o
C *
IS-NT-BB operating temperature -40..+70
o
C *
IG/IS/IM BB NT and NTC versions (operating temperature) -30 +70°C
IG/IS/IM BB NT and NTC versions (storage temperature) -40 +80°C
IS-NT*** operating temperature (LT version) -40..+70
o
C *
Storage temperature -30..+80
o
C