ABB RELION REX640 Technical Manual page 238

Protection and control

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Table of Contents

Basic functions

Function block

Figure 128: Function block

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.

Operation principle

The function can be enabled and disabled with 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.

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

of the day reaches the set activation time, output Q is activated and remains active

for the duration defined by the setting

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

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.

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

The output remains active until the next day if the value for

is set so that it results into rollover of the day.

xxx Act hour and xxx Act Mn , respectively. When the time

xxx off delay .

1MRS759142 F

Operation setting. The

xxx off delay

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