ABB ESI-S, Инструкции по установке, эксплуатации и обслуживанию

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60 Electrical design and installation  Manual Energy Storage Inverter ESI-S
defined internal error. In that case the desired function can be assigned to a
programmable alarm which can be monitored be assigned to a digital output.
This type of alarm has to be cabled on the 8 pin terminal block situated at the top
right corner when looking at the ESI-Manager from the rear (Cf.
Figure 40 )
The digital output contacts have a common point (cabled on contacts 1 and 2) and are
of the NO-type (normally open). The contact ratings are:
− Maximum continuous ac rating: 440 Vac/1.5 A
− Maximum continuous dc rating: 110 Vdc/0.3A
− The common is rated at 9 A/terminal, giving a total of 18 A
− When using a power supply of 24Vdc, a minimum current of 10 mA should be
drawn by the circuit connected to the digital output contact
Table 25 shows the status of a digital output contact configured as alarm contact for
different operation modes of the inverter.
Table 25: Status of a digital output contact configured
as alarm contact for different inverter operation modes
Inverter state Normally open digital contact state
Disconnected from the supply Open
Inverter (auxiliaries) connected
to the supply, no error present
Open
Inverter (auxiliaries) connected
to the supply, predefined error
appears
Closes when error present for 3 minutes.
Otherwise, contact remains open.
Inverter (auxiliaries) connected
to the supply, predefined error
disappears
When closed before, opens when error disappears.
When opened before, remains open.
The alarm conditions that can be assigned to a digital output are given in Table 26 . The
assignment must be made with the ESI-Manager. Any of the six digital outputs can be
used to cable an alarm. A maximum of 3 alarms can be assigned to the digital outputs.
Note however that by default the digital outputs have been set up for monitoring other
functions than alarms (cf.
Table 10 ) Refer to Section 7.9.2.4.3 for guidelines on how to
navigate to the digital output setup menu.
Table 26: List of possible alarm conditions that may trigger the alarm/digital outputs
Alarm condition Criteria to be fulfilled before contact is activated
Supply voltage (RMS)
unacceptably high
Vrms_max > 110% Vnominal
Supply voltage (RMS)
unacceptably low
Vrms_min < 90% Vnominal
One of the phases of the supply
is missing
Vrms_min < 60% Vnominal