User Manual

Logical I/O blocks
General functions
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With a binary input object, the operating hours are determined on the basis of
the ON state of [PrVal] (that is, by measuring the time for which this value is
active). For multistate blocks, you can configure how many states are to be
totalized. These are combined and added in a totalizer (the various states
cannot be evaluated individually). In contrast to the input object, the output
objects of the ON state for [FbVal] is logged (not [PrVal]) to operating hours
message of the output objects.
There are two separate totalizers for runtime totalization:
● Runtime totalizer
● Overall runtime totalizer
Runtime totalization can be enabled via the [EnOph] pin (Enable operating
hours count). This is a binary value for binary objects, for multistate objects a
list of values released for counting.
Maintenance messages (events) are generated via the runtime totalizers. These
are typically reset when the maintenance has been carried out. The present
operating hours [PrOph] output can be used to connect the runtime totalization
feature for further use in the program (e.g., for changeover of pumps or boilers
based on operating hours).
The operating hours [Oph] input is used to reset the current runtime total. In
online test mode in Xworks Plus (XWP) via a BACnet client the present value
can be reset by overwriting it with a new value (usually 0). This reset does not
affect the total operating hours count (pins [OphTot] and [PrOphTot], total
operating hours and present total operating hours respectively).
The total operating hours count records the total hours run by an aggregate. It
is only reset when the aggregate is replaced. The [PrOphTot] output is
available for further interconnection in the program.
The [OphTot] input is used to reset the total operating hours. In online test
mode in Xworks Plus (XWP) or via a BACnet client, the present value can be
reset by overwriting it with a new value (usually 0). This reset procedure
simultaneously sets the runtime totalizer (pins [Oph] and [PrOph]) to the same
value.
This is necessary, e.g., for an aggregate which is installed as a replacement
item, but which has previously been in operation elsewhere for some time.
A maintenance message (event) can be generated either after a specified
period of operation or on a specified date. The operating hours limit value and
the maintenance date [OphLm]/[MntnDate] can be configured for this purpose.
An event message is generated when the limit value is exceeded or at 13:00
Function
Release
Runtime totalizer
Resetting the runtime
total
Overall runtime totalizer
Resetting the operating
hours total