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DST2600 User’s Manual
In the “MAN” mode, loads are usually changed-over to mains. Using the “KM/KG” button it is
possible to invert the changeover status (the changeover to genset is possible only if the
conditions previously seen are verified). NOTE: it is possible only to invert the status: it is not
possible to leave
open both the breakers. Passing from “AUTO” to “MAN”, the changeover
status doesn’t change.
In “AUTO” mode, the loads are changed-over on genset (with respect of the proper conditions)
only when mains is out of the tolerance thresholds. As soon as mains comes back in tolerance,
loads are newly changed-over on mains (with proper delay times, see the sequence of the
mains). Passing from any other working mode to “AUTO”, loads are forced as described,
driving a changeover if needed. The “KM/KG” button is ignored. This status uses another
timing: to close the loads on genset it must be passed the P.218 time since engine started, or,
more precisely, since the genset voltages and frequency are internal to their tolerance bands.
This delay is used mainly to give a minimum time to the engine to warm itself before supply
the load
In the “TEST” mode, loads are normally changed-over to mains. Passing from any other
working mode to “TEST”, loads maintain their status. Using the “KM/KG” button it is possible
to invert the changeover status (the changeover to genset is possible only if the conditions
previously seen are verified). NOTE: it is possible only to invert the status: it is not possible to
leave open both the breakers. For this status too the delays configured with P.218 are applied.
It has to remember that the board passes automatically in AUTO (aborting TEST mode) if its
automatic intervention is required.
In “REMOTE START” mode, the loads are always changed-over on genset (with respect of
the proper conditions). Passing from any other working mode to “REMOTE START”, loads are
forced as described, driving a changeover if needed. The “KM/KG” button is ignored. P.218 is
used in this status too. It has to remember that the board passes automatically in AUTO
(aborting TEST mode) if its automatic intervention is required
This function allows to monitorize the trend of the active power in order to diagnose
a “low” or
“high” load condition (selectable by P.481 parameter, 0 means “low”, 1 means “high”). The
low/high status is signaled by a digital output configured as “4 – load function status”: if no
output is configured in this way, this function is disabled.
This function may be enabled/disabled with a digital
input appositively configured (code “33-
load function enabled); if no input is configured with code 33, the function is always enabled.
If, however, at least one input is configured in this mode, the “low” load survey is enabled after
P.482 seconds from input activation.
If power drops down for P.484 seconds under the threshold P.483 the
“low load” status is
detected, if it rises for P.486 seconds over the threshold P.485 the
“high load” status is
detected; in the other cases the status stays unchanged (histeresys).
The output is activated when :
“low” load condition is detected if P.481 is set to zero.
“high” load condition is detected if P.481 is set to one.
