Solenoid diaphragm pump
Series R/RS 204.1
Operating Instructions
30
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Subject to technical modifications!
TA 416
Rev.
11 en
04/2013
START
STOP
ENTER
AUTO
MANU
START
STOP
CAUTION !
The maximum voltage withstand capability of the inputs is
30V DC.
CAUTION !
The maximum current withstand capability of the inputs is
50mA.
CAUTION !
The signal + connection pin (lead colour: black) is not
short-circuit proof! In case of a short-circuit, the control
electronics may get damaged!
Therefore, please make absolutely sure that the signal +
connection pin is not connected with the earth connection
(lead colour: grey)!
9.2.1
Pulse input
The pump can be activated via a pulse signal (Fig. 33 / Fig.
34). Each input signal will trigger the magnetic diaphragm
pump to perform a stroke.
NOTE !
Each input signal will trigger the magnetic diaphragm
pump to perform a stroke.
The pulse transmitter (e.g. the contact water meter) must
be set accordingly.
CAUTION !
The minimum pulse length is 50ms. If smaller pulse
lengths are present, then the pulses might not be recog-
nised by the control electronics.
CAUTION !
The frequency of the incoming pulses must not exceed
the maximum stroke frequency of the pump (= 150 l/min).
9.2.2
Analog input
The pump can be activated via an analog signal (4-20mA) (Fig.
33).
A signal with a control current of 4mA corresponds to 0%
stroke frequency, a signal with 20mA corresponds to 100%
stroke frequency. In this range, the stroke frequency behaves
proportionally to the control current (Fig. 35).
current [mA]
s
tr
o
k
e
f
re
q
u
e
n
c
y
[
%
]
4
8
12
16
20
20
100
80
40
60
0
0
4-20mA
Fig. 35 (Stroke frequency in dependency of a control current of 4-20mA)
9.2.3
External stop input
Using the external stop input, the dosing pump can be stopped
via an external signal, no matter which operating mode the
pump is in.
While the signal is present, the pump will be stopped. When
the external stop signal is removed, the pump will run with the
preset stroke frequency (depending on the operating mode).
9.2.4
Level input with pre-alarm and dry run
NOTE !
Pre-alarm and dry run are connected to the same jack.
When leaving the factory, both inputs are preset to “clos-
ing when floating down”.
However, if necessary, they can be freely configured (see
Chapter 3.6).
Symbol:
Jack for level input
Fig. 36 (Jack for level input)
Suction lances that are compatible with types R/C 203 or
C 408.1/409.1 can be connected to the pump using an adapter
plug M8/M12, 3-pin (Item No. 90025005).