ABB RELION REX640, Техническое руководство, Страница: 238 / 1960

3.20.3.2 Function block
Figure 128: Function block
3.20.3.3 Functionality
The daily timer function DTMGAPC is used to activate or deactivate its output at the
set time of the day. It is possible to set a different activation or deactivation time
separately for each day of the week.
3.20.3.4 Operation principle
The function can be enabled and disabled with the
Operation setting. The
corresponding parameter values are "on" and "off".
The operation of DTMGAPC can be described with a module diagram. All the
modules in the diagram are explained in the next sections.
Q
Time
comparator
BLOCK
FREEZE
Figure 129: Functional module diagram
Time comparator
This module compares the current day and time with the activation hour and minute
defined with the settings
xxx Act hour and xxx Act Mn, respectively. When the time
of the day reaches the set activation time, output
Q
is activated and remains active
for the duration defined by the setting
xxx off delay.
The output remains active until the next day if the value for
xxx off delay
is set so that it results into rollover of the day.
Different activation and deactivation times can be set for all days of the week. The
activation and deactivation can also be disabled for a specific day. For example, if
the activation or deactivation is not needed on Sundays, the setting
Sunday Act
enable can be set as "False".
Activation of the
BLOCK
input deactivates the function output whereas the
activation of the
FREEZE
input freezes the output. The
BLOCK
input always has a
higher priority than the
FREEZE
input.
3.20.3.5 Application
DTMGAPC is useful in applications that require signal activation and deactivation
at a specific time of the day. Different activation times and duration can be set for
Basic functions 1MRS759142 F
238 REX640
Technical Manual