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Functionality
The voltage presence indication function PHSVPR supervises the voltage presence
status. The function is used for indicating the voltage presence status of a load break
switch or a circuit breaker.
Operation principle
The
Operation setting
is used to enable or disable the function. The corresponding
parameter values are “On” and “Off”.
The operation of PHSVPR can be described by using a module diagram. All modules
in the diagram are explained in the next sections.
Voltage
detection
U_C
ULive
UDead
U_A
U_B
GUID-8CA753E3-27C3-4EE9-A84A-F5489C662DCB V1 EN
Figure 78:
Functional module diagram
Voltage detector
This module supervises phase-to-earth voltage. The
Alive Phase Supervision
and
Dead Phase Supervision
settings define which phase or phases are monitored for
voltage presence and voltage absence respectively. The measured phase-to-earth
voltages are compared with the threshold settings.
If the measured phase-to-earth voltage remains above the set
Voltage Live Value
for
1 second for the phases defined under
Alive Phase Supervision
, the
PHSVPR_ULive
output activates indicating the voltage presence. Similarly, if the measured phase-to-
earth voltage remains below the set
Voltage Dead Value
for 1 second for the phases
defined under
Dead Phase Supervision
, the
PHSVPR_UDead
output activates
indicating voltage absence.
However, if the phase-to-earth voltage for the phase under supervision drops below
the set
Voltage Live Value
or rises above the
Voltage Dead Value
, outputs
PHSVPR_ULive
and
PHSVPR_UDead
are deactivated.
The hysteresis is used for preventing unnecessary oscillations if the input signal varies
slightly above or below the threshold setting. After leaving the hysteresis area, the
start condition has to be fulfilled again and it is not sufficient for the signal to only
return back to the hysteresis area. The hysteresis setting is not freely configurable.
The activation of
PHSVPR_ULive
is indicated with LED 8 of the SIM8F module in
green color whereas the activation of
PHSVPR_UDead
is indicated with the same
LED 8 of the SIM8F module in red color.
Section 6
1MRS757488 H
Commissioning
136
RIO600
Installation and Commissioning Manual
Содержание Remote I/O RIO600
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