Microelettrica Scientifica MC20-CEI, Руководство по эксплуатации

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MC20-CEI
Doc. N°
MO-0431-ING
Microelettrica Scientifica S.p.A. - Copyright 2009 FW 1080.36.03.X Date 18.11.2011 Rev. 3 Pag. 32 of 35
14. Password
This password is requested anytime the user wants to write in the “ Settings ” menu a command of the “ Commands ”
menu.
The default password is “
1111 “
When password is required, proceed as follows
The Display shows the message “
Password ???? “
- to select 1
st
digit (1-9)
to validate
- to select 2
nd
digit (1-9)
to validate
- to select 3
rd
digit (1-9)
to validate
- to select 4
th
digit (1-9)
to complete procedure.
The “ password “ is required any time you attempt to modify one of the programmable variables at the first entrance
in the “ Settings ” and/or “ Commands ” menus.
The “ password “remains valid for 2 minutes from the last operation of the programming buttons or until the
button is pressed to return to the default display (RT Meas).
Once the Password has been entered, a “
# “ appears before the variable that can be modified.
14.1 - MS-Com Password
This password is requested anytime the user wants to send to the relay a setting parameters
modification or to issue a command through the relay itself using the managing software MSCom.
The user can decide whether inserting his own password (see MS-Com Operational Manual) or
keeping the password disabled just clicking on the OK button when the password is requested.
15. Maintenance
No maintenance is required. In case of malfunctioning please contact Microelettrica Scientifica Service
or the local Authorised Dealer mentioning the relay's Serial No reported in the label on relays enclosure.
16. Power Frequency Insulation Test
Every relay individually undergoes a factory insulation test according to IEC60255-5 standard at
2 kV, 50 Hz 1min. Insulation test should not be repeated as it unusefully stresses the dielectrics.
When doing the insulation test, the terminals relevant to serial output, digital inputs and RTD input must
always be short circuited to ground. When relays are mounted in switchboards or relay boards that have
to undergo the insulation tests, the relay should be isolated. This is extremely important as discharges
eventually tacking place in other parts or components of the board can severely damage the relays or
cause damages not immediately evident to the electronic components.