Proline Promass 83E/F/O Description of Device Functions - FMC ...

Device Functions Proline Promass 83
7 Block OUTPUTS
Function description
OUTPUTS RELAY OUTPUT (1...2) CONFIGURATION
SWITCH-ON DELAY
(4702) ! Note!
This function is not available unless LIMIT VALUE or FLOW DIRECTION was selected in
the ASSIGN RELAY function (4700).
Use this function to define a delay (0 ... 100 seconds) for pull-up (i.e. signal changes from
0 to 1) 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 on condition has been
valid over the delay time.
User input:
fixed-point number 0.0...100.0 s
Factory setting:
0.0 s
OFF-VALUE
(4703) ! Note!
This function is not available unless LIMIT VALUE was selected in the ASSIGN RELAY
function (4700).
Use this function to assign a value to the switch-off point (relay drops out). The value can
be higher or lower than the switch-on point. Positive or negative values are permissible,
depending on the measured variable in question (e.g. mass flow, totalizer reading).
User input:
5-digit floating-point number [unit]
Factory setting:
0 [kg/h] or 2 [kg/l] or 200 [°C]
! Note!
• The appropriate unit is taken from the function UNIT VOLUME FLOW (0402) or
UNIT MASS FLOW (0400).
• If SYMMETRY is selected in the function MEASURING MODE (4705) and values with
different signs are entered for the switch-on and switch-off points, the notice message
“INPUT RANGE EXCEEDED” appears.
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 ... 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 off condition
has been valid over the delay time.
User input:
fixed-point number 0.0...100.0 s
Factory setting:
0.0 s
Issue/Rev. 0.2 (12/12) MN0M023 • Page 103