4. Electrical connection
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4.3 Wiring / circuit diagram
Correct wiring in accordance with the information in the accompanying description
and local regulations is essential.
Please note the following:
- Use cable bushes.
- Make sure that cables cannot chafe!
- Take particular care to ensure that the AC supply is not connected to the sensor
input or other low-voltage inputs or outputs.
- The two relay contacts may only be connected with the same voltage.
- When connecting the regulator and selecting the wiring materials to be used, it
is essential to comply with the provisions of DIN VDE 0100 “Erection of power
installations with rated voltages below 1000” or the relevant national regula-
tions.
Connect the compressor and agitator etc. according to the circuit diagram.
The compressor must not be connected directly to the relays on the control unit.
This must be switched using an additional contactor. In individual cases, it must
be checked whether additional motor protection switches or other safety devices
are to be installed.
Contactors are to be fitted with an RC protective circuit. See section 7.10
4.3.1 Wiring the digital input
Terminals 8 and 9 may only be connected to a potential-free normally open contact.
ATTENTION: do not apply any external voltage!
T
he correct circuit dia-
gram for your regulator
is affixed to the housing
.
Sensor
KTY 81-210
Operating
voltage
230V AC
50/60Hz
Relays may only be connected
to a uniform voltage!
Contact load relay:
K1: 230V 12A AC1
K2: 230V 10A AC1
Digital input
potential-free
contact
RS485
A = RX/TX+
B = RX/TX-
Agitator
Compressor
L1
WARNING
