Endress+Hauser Mycom S CLM 153 Operating Instructions Manual page 62

6 Commissioning
62
CODE CHOICE
(default = bold)
Two-sided pipe flow neutralisation (inline) with forward-locking conductivity measurement
Flow
Cond. sensor 2
meter
Q
Schematic diagram of a two-sided control with look-ahead control
MC4 Unit:
Unit:
4 mA value:
20 mA value:
MC5 Diameter
MC6 Function
Limit value
Kdisturb=1:
Kmax:
Kdisconnect:
INFO
Mycom 153
F
Electrolyte
Water
L
S
L
B
L
E
m3/h Flowmeter volume flow
s Unit: Entry of the volume flow in m
___ 4 mA value: Enter minimum flow velocity value.
___ 20 mA value: Enter maximum flow velocity value.
00 mm Pipe diameter
Entry of the internal diameter of the pipe located
between the two sensors.
On Feedforward control
050.0 (only if 2 current inputs are available)
050.0 Feedforward control has a multiplying effect, i.e. the
1.7 controller actuating variable is multiplied by the gain
1.0 Kdist (s. fig. 24).
Limit value If the current input signal undershoots the
value set here, dosing is stopped (actuating variable =
0). The dosing stop is not active if you enter 0
(= no limit value) here.
(Range 0...100%)
K =1: Here, enter the current input value in % at
disturb
which the feedforward gain should have the value 1. At
this point the output actuating variable is the same for
switched-on or switched-off feedforward control.
(Range 0...100%)
K : Here, the value of Kdisturb is displayed for a
max
current input signal of 100%.
K : Here, the value of Kdisturb is displayed for
disconnect
current input signal which is equal to the limit value.
Mycom S CLM 153
Cond. sensor 1
Q
3 3
/h or yd /h
Endress+Hauser