n
via a command over an interface module
and interface commands” on page 126
n
by alarms
Table 40 “Alarms which activate the Safe Mode function”
How does an alarm affect Safe Mode?
n
Not all alarms trigger Safe Mode.
n
Some alarms ignore the settings of the control variable in the Safe Mode
menu.
What indicates that Safe Mode is activated?
n
In the device display (Home window).
n
Via the warning "103 Safe Mode active"
n
Via the error in the interface command
What happens when Safe Mode is activated by an alarm?
n
Alarm
is displayed.
n
Safe Mode is activated.
n
Safe Mode cannot be deactivated until the alarm has been acknowl-
edged.
Safe Mode can only be activated if the function of the Safe Mode
was previously switched on in the menu.
To activate Safe Mode on drop-out, activate the Safe Mode function via
the menu and configure the Safe Mode parameters. In addition, activate the
control station monitoring function
“Control station” on page 117. After
monitoring has been activated, the constant temperature equipment actively
checks the sending of commands from the control station after connecting
to it.
The control station must send a command to the constant temperature
equipment periodically. The user must define the time the system waits
before reporting a communication fault. If the control station fails to send
a command within the specified time, the interface (Ethernet) sends a cor-
responding command to the constant temperature equipment. In this way,
Safe Mode is activated and a warning generated.
The device triggers Alarm 22 if the Safe Mode function is switched
Table 41 “Constant temperature equipment alarms”
If Safe Mode has been activated, the operator can switch off Safe Mode in
the associated menu. The parameters set by the Safe Mode will be retained
after the deactivation of Safe Mode. The programmer is not continued auto-
matically. If the “Set point offset” function is required, it must be activated
manually.
The Safe Mode function cannot be used together with the EtherCAT
module. The Safe Mode function is switched off and locked when using
EtherCAT.
Activating Safe Mode by disconnecting
from the control station
Switching off the activated Safe Mode
Compatibility
V6
Integral Process Thermostats and High-Temperature Thermostats
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