Comet MS6D, Инструкция по эксплуатации, Страница: 45 / 56

ie-ms2-MS6-10 45
7.12. What is it
“latched alarms”?
If any alarm is appeared, it stays active regardless the measured values. This state persists until to the
confirmation of alarm signalization when the alarms are set according to the actual measured values. This
feature is available for MS6 data logger with firmware version 6.3.0 and later. Description of setting is
specified in Appendix No. 5. Use the latest version of software.
7.13. Other possibilities in data logger configuration
Some settings are not accessible to usual users and are designed for qualified user. The work is described in
Appendixes and special Service manual.
7.14. What to do if data logger does not work

Does the LED diode light on power source (if there is any)?
–
if not then there is no mains voltage
or the source is faulty or the fuse is broken (then the cause can be in data logger). Check
connection of power to data logger. If the fuse breaks after source plug in mains
disconnect all terminals and connectors except power from data logger and try again. If
it works connect cables one after another and try to find the failure.

Does the LED diode light on power source? - if not replace fuse in data logger. Use the same type!

If the LCD display is off and data logger does not communicate probably qualified repair will be
necessary.
7.15. Self test error
If self test is not OK, data logger after switching ON reports self test error with specification of
incorrect voltage (power voltage, internal battery and negative source voltage). If error in Ucc, try to
measure the power voltage on data logger. It is necessary to fix the failure. If sending of SMS
message in selftest error is set, use suitable delay, e.g. 30 s.
7.16. Problems with correct measurement

Data logger measures incorrectly at some inputs:
Disconnect all inputs and let connected always only one and watch values on data logger. If
correct then problem can be in cabling or in input device (incorrect connection, undesirable
loops).
Typical values on display when current loop is open (4 to 20) mA for several selected input
ranges:
Assignment of input value for current 4
to 20 mA in user calibration
measured value by data logger
if current loop is open
-30 to 60 -52,5 or Error1
-30 to 80 -57,5 or Error1
-50 to 30 -70,0 or Error1
0 to 150 -37,5 or Error1
0 to 100 -25,0 or Error1
Message Error2 with current loops indicates exceeding of current 20 mA
In case of measurement of resistance (e.g. sensors Pt100, Pt1000, Ni1000 and others) the
following errors can appear:
Error1: short circuited sensor
Error2: broken sensor
Data logger time from time and totally irregularly indicates totally incorrect value: