10 | BA-40400-02-V14
Two-Channel Controller TOPAX DE
Fig.8: Individual connecting terminals, removable for installation, of the technical
components.
ATTENTION!
When choosing the line material, for installation and
electrical connection of the device, observe the regu-
lations of VDE 0100 “Provisions for setting up elec-
tric power plants with nominal voltages below 1000
V“ or the individual national rules.
ATTENTION!
The equipment is not suitable for the installation in
explosive conditions!
4.5.1 Connection of the in- and outputs
NOTICE!
Terminal clips allocation depends on the software
configuration of
TOPAX
. Terminal clips allocation de-
pends on the delivered equipment.
The delivered equipment is listed in the protocol, which is attached to
the device. Use this terminal plan to wire the device and to put it in
operation.
4.5.2 Voltage supply
This instrument has no power switch and is immediately operative after
the creation of the operating voltage. For this reason an external switch
and/or protective switch is to be planned.
For the connection to the power supply at the main board, refer to the
enclosed terminal plan (see “4.7 Terminal clips of the main board and
the technical components” on page 11).
ATTENTION!
DO NOT let power be switched on via timer opera-
tion!
4.5.3 Sensor technology
Measuring cables may not be parallel when too close (less than 15 cm)
to power switches and/or cables for power installation. Separate cable
channels are to be used. Disturbing stray effects could otherwise falsify
the measurement. Power supply and measuring lines at close proximity
should only cross at a 90° angle.
The maximum permissible length of the measuring cables depends on
the kind of the sensor. When performing very ohmic measurements (e.g.
pH or REDOX measurements) the following is to be considered:
• Connections and patch cords must be clean and dry.
• The permissible bending radius of the cable must be respected.
• The quality of the holding wires must correspond to the defaults
from the data sheet of the sensor.
IMPORTANT!
If possible a continuous cable is to be used from the
sensor to the measuring entrance. An extension of
the cable by plugs or terminal socket increases the
risk of disturbances due to contamination, humidity
or excessive transition resistances.
4.5.4 Connecting the actuators
When connecting your actuator the equipment must be switched off to
prevent uncontrolled starting and malfunctioning.
WARNING!
If devices e.g. dosing pumps with inductive loads
from a nominal current of 1 A are connected to
a relay, the contacts in the relay may be bonded.
Thus, the device will operate in an uncontrolled
manner. This may also result in an overdosing of
chemicals. To prevent the output relays from bond-
ing if the load circuit shorts, they must be protected
separately on the maximum relay switching current.
For inductive loads, protective circuit must be ap-
plied to the relay contacts (spark suppression). The
manufacturer recommends the use of the interfer-
ence suppression module / spark suppression de-
vice (article 78614).
4.5.5 Replacing the batteries
The life of the batteries (Type VARTA, CR1/2 AA, 2 Volt, Lithium) provided
with the internal instrument clock is approx. 5 – 10 years. When the bat-
teries wear out causing a power shortage, a warn-ing message will be
displayed on the instrument. The battery is welded on the display circuit
board. It must be replaced by a skilled technician.
Fig.9: Battery for internal clock, on the display circuit board.
4.6 TOPAX on the EASYPRO water sampling station
If the TOPAX is set up on an EASYPRO water sampling station, it controls
the illumination of the LEDs. The LEDs of the sensors are controlled via
the measured values. The LEDs illuminate green when the measured
values lie within the set range. Leaving these ranges causes the LEDs
to illuminate red.
TThe DIN contact must be activated in the control.
