BA-40100-02-V17 | 23
Operating instructions
6 Explanation of digital signal inputs
6.6.1 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 filter rinsing
• After “remote switchoff” (sample water shortage)
• After adjusting the measuring input
• When switching on the 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 Deactivation of the controller function without alarm
signaling in the case of filter flushing
This function can be activated by an external contact during filter clean-
ing. The automatic controller functions are set to "0 %" and the "Filter
backwash appears in the display during this time. When the contact is
released, the initial value of the time before the filter cleaning is set for
a starting time. After this starting period, the control process is carried
out automatically.
This starting lag time is necessary. After a filter cleaning the measured
values are not to be used immediately for regulation, since these must
reset themselves again to the measuring water. Therefore the regulation
is set on the automatic controller power output, as it was prior the filter
flushing. The regulation of the measured value begins only after the
deceleration time is over.
6.4 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 disinfec-
tion medium) and/or. 25 and 26 (intake dosing pump pH value) can be
opened and/or closed. The notification "low level alert" and/or "pH value
low level alert" will appear 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 contact
of the intake connection between the clamps 23 and 24 (intake dosing
pump disinfection medium) and/or 27 and 28 (intake dosing pump pH
value). The announcement "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
7.4.1 General
During configuration of the TOPAX DX, an output type has been as-
signed 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)
7.1 Output types
The regulating outputs can be calibrate in several aspects (see chapter
“19.1.17 Menu 5.2: Outputs” on page 37):
7.1.1 ON/OFF (relay)
Relay output - if the adjusted value are excessive the relay switches, a
hysteresis is adjustable.
7.1.2 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.
7.1.3 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.
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.
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.
7.1.4 3-point-step output for servo motors
Relay output (e.g. for chlorine control valve C7700).
