User Manual

Page 24
ENS2
www.elektroautomatik.de
[e-mail]
EA Elektro-Automatik GmbH
Helmholtzstr. 31-33 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
Frequency errors
ID Abbreviation Meaning
55 f> Frequency too high
56 fc< Frequency too low
57 fc> Frequency too high
Hardware errors
ID Abbreviation Meaning
73 PAR Erroneous parameter(s)
82 PAR The“countrydatasets”ofbothmicrocontrollersdonotmatch
At the end of an error entry there is a value to tell the time that has elapsed since the error occurred:
s=seconds,m=minutes,h=hours,d=days,w=weeks,y=years.
Incasethereisan”R“inthebeginning,thesupervisionunit(ENS2)hasbeendisconnectedfrommainsatleast
once and the errors were stored. Then the elapsed time can not be referenced as accurate. The time counter of
the supervision circuit is stored in an internal EEPROM every 60 minutes. After the next start of the ENS2 unit, the
stored time is added 70 minutes. As soon as an error occurs, the current time stamp is added to the error entry. The
errorlistcanthenonlyshowthedi󰀨erencebetweenstoredtimecounterandcurrentcountervalue.Thisrestarts
make these time values fuzzy, but they can still be used to estimate the time of occurrence and probably connect
it with the external cause of the error.
5. Trouble-shooting
This section deals about errors solely connected to manual handling of the ENS2 on the control panel.
5.1 LOCKED in status row
Status“LOCKED”shouldneveroccurinnormaloperation.Ifit’sdisplayed,however,trytoclearitbycuttingthe
supervisioncircuitfrommains,byswitchingthecircuitbreakersontherearsidetoo󰀨.Aftertherestart,theerror
shouldbegone.BecausetheENS2moduleisusuallymountedin19”cabinetorrack,itsu󰀩cestoremovethe
front to access the rear side 3-line breakers.
5.2 LED signals
Also on the front panel, next to the display, there are two LEDs (red & green), which can also indicate statuses:
Red LED Green LED Description and instruction
on o󰀨 Mains error (voltage or frequency)
ashing1x o󰀨 Hardware error
• Contact support of the manufacturer
ashing2x o󰀨 Error at the contactors
• Make sure the ENS2 module is correctly wired
• Make sure the contactors work faultless. Probably replace contactors.
o󰀨 ashingcont. Initialisation or switch-on process
ashingcont. ashingcont. Parameterareeditmode.Contactorsareswitchedo󰀨.
o󰀨 on Normal operation