Power Supply Failure; Manual Adjustment Of The Output Variable - Samson Trovis 6400 Mounting And Operating Instructions

OPERATING level

6.2.2. Power supply failure

Configuration block C 43 (restart condition) defines the behaviour of the process control station
after switching on the power supply in the start-up phase or after detecting a power supply
failure (> approx. 1 s). This restart condition determines the operating mode, the set point
(reference variable) and the output variable for output Y1 or Y2.
If one of the restart conditions C43-1 to C43-6 is set, it is necessary to confirm the setting by
pressing the F key in order to return to the normal control mode. In both cases, the digital
displays for the set point and the controlled variable flash until the F key is pressed. The settings
C43-5 and C43-6 cause the process control station to remain in the MANUAL mode, even when
the F key is pressed. This is indicated by the
The settings C43-7 to C43-12 must not be confirmed in order to return to the normal control
mode. The process control station automatically operates in the control mode according to the
restart conditions implemented with configuration block C 43.
The following table is a short summary of the optional restart conditions.
C43 Set point
-1, -2 Last active
-3, -4 W
S
-5, -6 Last active
-7, -8 Last active
-9, -10 Internal
-11, -12 External

6.2.3. Manual adjustment of the output variable

In MANUAL mode, the connected control valve can be manually moved to the desired position,
using the G and H keys, provided that these keys have not been disabled in the configuration
mode (C59-2 or C59-4). The corresponding key must be pressed until the desired output
variable is adjusted. The bar graph (13) indicates the change in the output variable. If the F key
is pressed, the numerical value of the output variable is also displayed in the digital display
field (2).
Bumpless change-over from MANUAL to AUTOMATIC mode and vice versa is carried out via
the MANUAL/AUTOMATIC key (E).
Pressing the G key increases the output variable.
Pressing the H key decreases the output variable.
30
Output variable Oper. mode
Y K , Y K Automatic
1 1 2 1
Y K , Y K Automatic
1 1 2 1
Y K , Y K Manual
1 1 2 1
Y K , Y K Automatic
1 1 2 1
Y K , Y K Automatic
1 1 2 1
Y K , Y K Automatic
1 1 2 1
symbol in (19).
Press F-key
Yes
Yes
Yes
No
No
No
Operation
Comment
WS overwrites W
IN
After pressing F,
still MANUAL mode