Endress+Hauser Proline t-mass 65 MODBUS RS485, Руководство пользователя

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Proline t-mass 65 MODBUS RS485 PROCESS PARAMETER
Hauser 37
ON-VALUE LOW FLOW CUT
OFF Prerequisite
This function is not available if OFF was selected in the ASSIGN LOW FLOW
CUT OFF function (

ä
36).
Description
Use this function to enter the on-value for low flow cut off.
The unit is taken from the SYSTEM UNITS group (

ä
8).
Low flow cut off is switched on if the value entered is not equal to 0. An
inverted plus sign is shown on the local display of the flow value as soon as the
low flow cut off is active.
User input
5-digit floating-point number
Factory setting
1 % of full scale value
MODBUS register:
Data type:
Access: 5138
Float
read/write
OFF-VALUE LOW FLOW CUT
OFF Description
Use this function to enter the off-value for low flow cut off. Enter the off-value
as a positive hysteresis from the on-value.
a0001245
Fig. 4: Example for the behavior of low flow cutoff
Q Flow rate [volume/time]
t Time
H Hysteresis
a ON VALUE LOW FLOW CUT OFF = 20 kg/h
b OFF-VALUE LOW FLOW CUTOFF = 10%
c Low flow cutoff active
1 Low flow cut off is switched on at 20 kg/h
2 Low flow cut off is switched off at 22 kg/h
User input
Integer 0 to 100%
Factory setting
50%
MODBUS register:
Data type:
Access: 5104
Float
read/write
Function description, PROCESS PARAMETER group
1
c c
Q
t
1
2
b
a
2
H