En
gl
is
h (
G
B)
24
6.7.2 Additional display
The additional display provides additional
information about the current pump status. The value
is shown in the display with the corresponding
symbol.
In "
Pulse
" mode the "Target flow" information can be
displayed with Q = 1.28 l/h (see fig.
).
Fig. 19
Display with additional display
The additional display can be set as follows:
1)
only DDC-AR control variant
6.8
Inputs/Outputs
In the "
Setup
>
Inputs/Outputs
" menu, you can
configure the two outputs "
Relay 1
+
Relay 2
" and
the signal inputs "
External stop
", "
Empty signal
" and
"
Low-level signal
".
Fig. 20
Inputs/Outputs
menu
6.8.1 Relay outputs
Applies to DDC-AR control variant
The pump can switch two external signals using
installed relays. The relays are switched by
potential-free pulses. The connection diagram of the
relays is shown in section
Both relays can be allocated with the following
signals:
* Factory setting
** The correct transmission of incoming pulses can
only be guaranteed up to a pulse frequency of
5 Hz.
6.8.2
External stop
The pump can be stopped via an external
contact, e.g. from a control room. When activating
the external stop signal, the pump switches from the
operating state "Running" into the operating state
"Standby". The corresponding symbol appears in the
"Signal/error display" area of the display.
The contact type is factory-set to closing contact
(
NO
). In the "
Setup
>
Inputs/Outputs
>
External stop
"
menu, the setting can be changed to opening contact
(
NC
).
T
M
04
8
1
6
7
04
12
Setting
Description
Default
display
Target flow (
Pulse
)
Input current (analog)
1)
Dosed volume
Dosed vol. since last reset
(see
on page
T
M
0
4
11
5
2
11
1
0
Operation
0.0400
l/
Pulse
1.28 l/h
Additional display
In/Output
Relay 1
Relay 2
External stop
Empty signal
Low-level signal
>
>
NO
NO
NO
Relay 1
signal
Relay 2
signal
Description
Alarm
*
Alarm
Display red, pump
stopped (e.g. empty
signal, etc.)
Warning
*
Warning
Display yellow, pump is
running (e.g. low-level
signal, etc.)
Stroke
signal
Stroke
signal
Each full stroke
Pump
dosing
Pump
dosing
*
Pump running and
dosing
Pulse
input
**
Pulse
input
**
Each incoming pulse
from pulse input
Contact type
NO
*
NO
*
Normally open contact
NC
NC
Normally closed
contact
Caution
Frequent disengagement from the mains
voltage, e.g. via a relay, can result in
damage to the pump electronics and in the
breakdown of the pump. The dosing
accuracy is also reduced as a result of
internal start procedures.
Do not control the pump via the mains
voltage for dosing purposes!
Only use the "
External stop
" function to
start and stop the pump!
