Safe Mode Safety Fittings - Lauda IN 550 XT FC Operation Manual

6.22

Safe Mode safety fittings

Aim of the Safe Mode
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In addition to measures provided in LAUDA.LIVE for authorizing access
and changing device data, e.g. 2-factor authentication, the device-side
access configuration is used by the user for basic restriction/control of the
LAUDA.LIVE services.
The Safe Mode enables the user to determine an emergency operating mode
for the device and application in advance. In the event of faults in the process
(e.g. failure of the communication with the control station), it is possible to
switch to this sage operating mode quickly and easily.
The device remains in this safe operating mode until Safe Mode is manually
deactivated.
What happens with activated Safe Mode?
The parameters configured in Safe Mode are set.
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A warning 103 Safe Mode appears in the display (Home window).
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The parameters affected by Safe Mode cannot be changed.
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Active programmers are terminated.
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The "Set point offset" function is switched off.
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The Operator privileges of the constant temperature equipment are
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assigned to the Master operating unit Ä "Locking of the Operator
privileges in the Master" on page 115. The Operator privileges cannot be
relinquished during the active Safe Mode.
Which events lead to the activation of Safe Mode?
communication with the control station being interrupted
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manually by the user
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via a command over an interface module Ä Table 37 "Interface module
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and interface commands" on page 123
by alarms Ä Table 38 "Alarms which activate the Safe Mode function"
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on page 123
How does an alarm affect Safe Mode?
Not all alarms trigger Safe Mode.
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Some alarms ignore the settings of the control variable in the Safe Mode
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menu.
What indicates that Safe Mode is activated?
In the device display (Home window).
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Via the warning "103 Safe Mode active"
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Via the error in the interface command Ä Chapter 4.7.9 "Error mes-
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sages" on page 53.
What happens when Safe Mode is activated by an alarm?
Alarm is displayed.
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Safe Mode is activated.
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Safe Mode cannot be deactivated until the alarm has been acknowl-
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edged.
Safe Mode can only be activated if the function of the Safe Mode
was previously switched on in the menu.
Integral process thermostats with flow control unit V4