© EPS Stromversorgung in 2022, this information is subject to change without notice
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30000800_manual_psb_10000_4u_30kw_en_04
1.7.5
Alarm signals
The equipment offers various possibilities for signaling alarm conditions, however, not for danger situations. The signals
may be optical (on the display as text or via LED), acoustic (piezo buzzer) or electronic (pin/status output of an analog inter-
face). All alarms will cause the device to switch off the DC terminal. For details about the different alarms refer to section
“3.4. Alarm conditions”.
The meaning of the signals is as follows:
Signal
OT
(OverTemperature)
•
Overheating of the device
•
DC terminal will be switched off
•
Non-critical
Signal
OVP / SOVP
(OverVoltage)
•
Overvoltage shutdown of the DC terminal due to high voltage entering the device or generated by
the device itself due to a defect
•
Critical! The device and/or the load could be damaged
Signal
OCP
(OverCurrent)
•
Shutdown of the DC terminal due to excess of the preset limit
•
Non-critical, protects the load or source from excessive current consumption
Signal
OPP
(OverPower)
•
Shutdown of the DC terminal due to excess of the preset limit
•
Non-critical, protects the load or source from excessive power consumption
Signal
PF
(Power Fail)
•
DC terminal shutdown due to AC undervoltage or defect in the AC section
•
Critical on overvoltage! AC section could be damaged
Signal
MSP
(Master-Slave Pro-
tection)
•
DC terminal shutdown due to communication problems on the master-slave bus
•
Non-critical
Signal
SF
(Share Bus Fail)
•
DC terminal shutdown due to signal distortion on the Share bus
•
Non-critical
1.7.6
Functionality test
The operator of the device must decide when to check the device for correct functionality, by whom and how often. The
when could either be before every use or after it has been relocated or reconfigured or perhaps in a defined interval.
Should the set values not be adjustable as instructed below it could simply be due to adjustment limits
interfering. See “3.5.4. Adjustment limits”. When reaching a limit when adjusting value, the device would
indicate in the display.
The test procedure would always be like this:
1. Disconnect all cables (DC, Sense, Share bus, analog interface, USB), except for AC
2. Connect a suitable voltage meter to the DC terminal
3. Switch the device on, adjust a voltage of 10% U
Nom
while the current and power set values all should be at maximum,
switch the DC output on and measure the voltage with the multimeter and compare. Also check what the actual volt-
age on the display shows.
4. Repeat the same thing at 100% U
Nom
.
5. Switch the DC output off and bridge the DC terminal with a cable or copper rails of suitable current capability of at least
I
Nom
. If available, put a current measuring device (transducer, current probe).
6. Adjust the current for source mode to 10% I
Nom
, switch the DC output on and measure the current with the external
measuring device,if available and compare the measured current to the actual and set value of current on the display
or at least compare the actual current on display with the set value.
7. Repeat the same thing at 100% I
Nom
.
Only if the current and voltage are supplied by the device as adjustable in the range of 0-100% FS, the device can be consid-
ered as correctly operational.
