EPS Stromversorgung 06230400, Руководство по эксплуатации

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EPS Stromversorgung GmbH
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info@eps-germany.de
PS 9000 1U Series
3.6 Alarms and monitoring
3.6.1 Definition of terms
Device alarms (see „3.3. Alarm conditions“ ) are defined as conditions like overvoltage or overtemperature, signalled
in any form to the user of the device in order to take notice.
Those alarms are always indicated in the front display as readable abbreviated text, as well as status readable via
digital interface when controlling or just monitoring remotely and, if activated, emitted as audible signal (buzzer).
Furthermore, the most important alarms are also signalled by output pins on the analog interface.
There is furthermore an alarm history available in the submenu “
Overview ”. It counts alarms that occurred since
the last time the unit was switched on, for statistics and later check.
3.6.2 Device alarm handling
A device alarm incident will usually lead to DC output switch-off. Some alarms must be acknowledged (see below),
which can only happen if the cause of the alarm is not persistent anymore. Other alarms acknowledge themselves
if the cause has vanished, like the OT and the PF alarm.
► How to acknowledge an alarm in the display (during manual control)
1.
Push button or once.
► How to acknowledge an alarm on the analog interface (during analog remote control)
1.
Switch off the DC output by pulling pin REM-SB to the level that corresponds to “DC output off”, then switch
it on again. See section
„3.5.4.7. Application examples“
for levels and logic.
► How to acknowledge an alarm in the alarm buffer/status (during digital control)
1.
Read the error buffer (SCPI protocol) or send a specific command to acknowledge, i.e. reset alarms (ModBus).
Some device alarms are configurable by adjusting a threshold:
Alarm Meaning Description Range Indication
OVP
O ver V oltage
P rotection
Triggers an alarm if the DC output voltage reaches the
defined threshold. This can be caused by the device
being faulty or by an external source. The DC output
will be switched off.
0 V...1.1*U
Nom
Display, analog
IF, digital IF
OCP
O ver C urrent
P rotection
Triggers an alarm if the DC output current reaches the
defined threshold. The DC output will be switched off. 0 A...1.1*I
Nom
Display, digital
IF
OPP
O ver P ower
P rotection
Triggers an alarm if the DC output power reaches the
defined threshold. The DC output will be switched off. 0 W...1.1*P Nom
Display, digital
IF
These device alarms can’t be configured and are based on hardware:
Alarm Meaning Description Indication
PF P ower F ail
AC supply over- or undervoltage. Triggers an alarm if the AC supply is out
of specification or when the device is cut from supply, for example when
switching it off with the power switch. The DC output will be switched off.
Display, digital
IF
OT
O ver T em-
perature
Triggers an alarm if the internal temperature reaches a certain limit. The
DC output will be switched off.
Display, analog
IF, digital IF