24 | BA-40400-02-V14
Two-Channel Controller TOPAX DE
6 Explanation of digital signal inputs
6.4.1 General
It is possible to interrupt the control process and to activate an alarm
by external digital signals. These inputs can be configured in the menu
as "normally close" or "normally open" and the level inputs must be
additionally deactivated.
6.1 Start-up delay
The digital signal inputs causes alarm and/or auxiliary functions, which
interferes with the normal functions of the automatic controller.
If a digital signal input is operated and if the appropriate function is
implemented, this has mostly effects on the quality of the measure-
ment and the regulation will be set to "0%". After that the automatic
work of the automatic controller is again configured; if a start-up lag
time occurs, the sensors reset themselves to the automatic measuring
procedure.
ATTENTION!
The start-up delay is activated:
• after a "remote switchoff" (measuring water
shortage)
• after the calibration of a measuring input
• when switching on a supply voltage
6.2 Deactivation of the controller function with alarm
signaling in the case of lack of sample water
6.2.1 measuring water shortage
By an external flow contact the automatic controller functions activates.
If the function "shortage of measuring water" is active and it arises a
shortage of measuring water, all automatic controller outputs are set
to "0 %", thus switching alarm relays; the announcement "shortage of
measuring water” appears in the display.
6.3 Low level alert, alarm and warning "level dosing
pump"
By an external contact e.g. of the level switches of an intake, the con-
nection between the clamps 21 and 22 (intake dosing pump free chlo-
rine) and/or. 25 and 26 (intake dosing pump pH value) can be opened
and/or closed. The announcement "Disinfection low level alert" and/or
"pH value low level alert" appear in on the display and the alarm relay
switches. The chemicals must be refilled.
No chemicals refilled can be opened and/or closed after a further con-
tact of the intake connection between the clamps 23 and 24 (intake
dosing pump free chlorine) and/or 27 and 28 (intake dosing pump pH
value). The announcement “Disinfection level Alarm" and/or "pH value
level Alarm" appears on the display and the alarm relay switches; at the
same time the automatic controller output line of the respective input
is set to 0.
ATTENTION!
If the level inputs in the menu "Service digital inputs"
are activated, the level switches must be connected
to the terminals respectively. If no level switch is at-
tached, the inputs are to be deactivated.
7 Explanation of measuring values outputs
7.1 General
The TOPAX can be used to regulate the disinfection and the ph value.
During configuration of the TOPAX, an output type has been assigned
to each controller.
Possible are:
• Servo motor with potentiometer (with feedback)
• Servo motor without potentiometer (without feedback)
• Pulse frequency (electronic / optocoupler)
• Pulse frequency (relay)
• Continuous (current) output 0/4 … 20 mA
• ON/OFF (relay)
7.2 Output types
The regulating outputs can be calibrated in several aspects (see chapter
“12.1.18 Menu 5.2: Outputs” on page 35):
7.2.1 ON/OFF (relay)
Relay output - if the adjusted value are excessive the relay switches, a
hysteresis is adjustable.
7.2.2 Pulse length
10-3600 seconds cycle time, relay output (e.g. for solenoid valves).
Depending on the control deviation and the defined control parameters,
the relay pulls in or drops out for the set cycle duration. If the cycle lasts
30 seconds and the controller output power is 40% the relay applies for
example for 12 seconds, followed by 18 seconds of non-application.
7.2.3 Pulse frequency
10-350 pulses per minute as a adjustable maximum
The pulse frequency depends on the control deviation and the set con-
trol parameters, e.g. for a controller output power of Y = 25% and a
pulse frequency of 100 pulses/minute, the controller sends 25 pulses/
minute.
Observe the maximum stroke frequency of the connected pump.
7.2.4 Electronic output (optocoupler output)
Pulse frequency output for controlling solenoid-driven dosing pumps or
motor-driven pumps (e.g. MAGDOS or MEMDOS pumps) with intelligent
electronic control unit. Ensure the correct polarity.
7.2.5 Relay output
Pulse frequency output, pulse length output, 3-point-step output (for
servo motors) or "ON/OFF" for the control of magnet dosing pumps,
hose pumps or single solenoid valves.
3-point-step output for servo motors
Relay output (e.g. for chlorine control valve C7700).
A acknowledging potentiometer can not be connected with servo motors
with position feedback (1-10 kOhm). The acknowledging potentiometer
is to be adjusted. For calibration the servomotor is started first. The volt-
age, which lines up over the acknowledging potentiometer, is indicated
in the position of the potentiometers (voltage display between 0 and 3
V). After the stop position has been reached, the servomotor is stopped
automatically. The alignment is accomplished and is to be stored in the
TOPAX.
The switching hysteresis can be set from 1-20%.
