User Manual

Logical I/O blocks
General functions
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244 | 353 CM110664en_07
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Normal : Direct switching in stages taking into account runtimes (e.g.,
motors, burners, dampers, etc.).
●
Motor : Switching in stages for rotating aggregates taking into account
ramp-up and ramp-down times (fan-belt protection).
●
Trigger : Event-driven switching, last command takes precedence ;
integration of a data point (EIB, LONMARK)
●
Switch : Generation of an ON/OFF pulse of a defined duration.
●
Push button with delay : Generation of an ON/OFF pulse of a defined
duration. The pulse can be extended whenever required.
●
Release (Release Command) : Issuance of a subsystem-specific release
value instead of Present_Value (=Relinquish_Default), if no priority is active
in the output object.
[SwiKind] BO MO BVal MVal
Normal
• • • •
Motor
•
Trigger
• •
Switch
• •
Pushbutton with delay
• •
Release
•
Normal handling of the process values in the [PrioArr]. The configured runtimes
are active. The outputs can be switched directly or in stages.
The
Motor setting is used when there is a need to allow for ramp-up and ramp-
down times due to a rotating centrifugal mass. The programmed times in this
setting can be used, e.g., to avoid overloading the fan belt when starting a fan
motor.
When the motor is switched down, the system checks on the basis of the ramp-
up time whether or not the current motor speed has been reached. The switch-
down command is not executed until the motor speed is stable. During the
ramp-down period, the effective command to the hardware is
Off . When the
ramp-down time has elapsed, the new command is transmitted to the
hardware.
In the Trigger setting, the source of the last command takes precedence. The
valid value is written from the [PrioArr] to the [DefVal] and transmitted to the
output. The priority is then released again.
In this setting, Priorities 7…16 are treated equally; Priorities 1…5 have a
blocking effect.
Normal
Motor
Trigger