Endress+Hauser Liquisys M CPM253 User Manual

Commissioning Liquisys M CPM223/253
46 Endress+Hauser
Coding Field Setting range
(Factory settings, bold)
Display Info
Z
CURRENT INPUT
function group
Current input settings.
Z1
Select flow
monitoring of main
stream (with
controller switch-
off)
Off
On
Flow monitoring may only be switched on
if the flowmeter is connected in the main
stream.
If Z1 = off, fields Z2 to Z5 are not available.
Z2
Enter the delay for
controller switch-off
through current
input
0 s
0 to 2000 s
Brief flow shortfalls can be suppressed by a
delay and do not result in controller
switch-off.
Z3
Enter the delay for
controller switch-on
through current
input
0 s
0 to 2000 s
In the case of a controller, a delay until a
representative measured value is received
is useful if the flow fails for an extended
period.
Z4
Enter the switch-off
limit value for the
current input
50%
0 to 100%
0 to100% corresponds to 4to20mA at
the current input. Observe measured value
assignment to the current output of the
flowmeter.
Z5
Enter the switch-off
direction for the
current input
Low
High
The controller is switched off if the value
entered in Z4 is undershot or overshot.
Z6
Select feedforward
control to PID
controller
Off
Lin = linear
Basic
If Z6 = off, the field Z7 is not available.
Z6 = basic: disturbance variable only
affects the basic load (alternatively dosing
in proportion to quantity, if usual PID
controller not possible, e.g. defective
sensor).
Z7
Enter value for
feedforward control
at which gain = 1
applies
50%
0 to 100%
When the value is set, the controller
actuating variable is the same size when
feedforward control is switched on as
when feedforward control is switched off.
Z
CUR.INPUT
Z1
Cont.stop
Off
Z2
s
Off Delay
0
Z3
s
On Delay
0
Z4
%
A.Thresh
50
Z5
Stop Dir
Low
Z6
PID influ
Off
Z7
%
Kinflu=1
50

Endress+Hauser Liquisys M CPM253 Specifications

General

Brand	Endress+Hauser
Model	Liquisys M CPM253
Category	Transmitter
Language	English