wtw TresCon UNO A111, Operating Manual

Page: 34 / 208

Installation TresCon UNO
3 - 16 ba43134e08 05/2017
RCD protective circuit Example of the circuit:
Fig. 3-14 RCD protective circuit for inductive load
Component dimensioning:
Example: U = 24 V, I = 2 A, R
L
= 100 Ohm =>
R = 12 Ohm, C = 0.012
µ
F
Note
Several relays can be assigned by software to the analyzer module.
The setting of the relays is described in
SECTION
5.3 R
ELAY FUNCTIONS
from
PAGE
5-29.
3.5.4 Valve control
The terminals of the valve control are required to connect an overflow
vessel with valve (see section 3.6) and to connect a permeate switch
(see section 3.7).
U D
L
R
L
C
R
Contact
Load I
L
+
-
I: Highest switching
power at the relay
U: Maximum swit-
ching voltage
I
L
: Load current
R
U
I
---- = C
0 1
μ
F I
L
⋅
·
,
I
-------------------------- =