HART Proline Promag 55, Manual

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7 Block OUTPUTS Device Functions Proline Promag 55
96 Hauser
SWITCH-OFF DELAY
(4704)
!
Note!
This function is not available unless LIMIT VALUE was selected in the ASSIGN RELAY
function (4700).
Use this function to define a delay (0 to 100 seconds) for dropout (i.e. signal changes
from 1 to 0) of the relay output. The delay starts when the limit value is reached. The
relay output does switch when the delay has timed out and the switch condition has been
valid throughout the delay time.
User input:
Fixed-point number 0.0 to 100.0 s
Factory setting:
0.0 s
MEASURING MODE
(4705)
!
Note!
This function is not visible unless a limit value was assigned to the relay output.
Use this function to define the measuring mode for the relay output.
Options:
STANDARD
The relay output signal switches at the defined switch points.
SYMMETRY
The relay output signal switches at the defined switching points, irrespective of the sign.
If you define a switch point with a positive sign, the relay output switches as soon as the
value is reached in the negative direction (negative sign), (see illustration).
Factory setting:
STANDARD
Example for the SYMMETRY measuring mode:
Switch-on point Q = 4
Switch-off point Q = 10
➀
= Relay energized
➁
= Relay de-energized
A0001247
!
Note!
• SYMMETRY cannot be selected unless the values in the ON-VALUE (4701) and
OFF-VALUE (4703) functions have the same sign or one of the values is zero.
• If the values have different signs, SYMMETRY cannot be selected and an
"ASSIGNMENT NOT POSSIBLE" message is displayed.
Function description
OUTPUTS
➞
RELAY OUTPUT (1 to 2)
➞
CONFIGURATION
0
- 4
- 10
4
10
Q
t
➀
➀ ➁ ➀ ➁ ➀