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How to connect it?
This section will explain how to connect the Neets Control – EU with the Relay box 306-0003. It will also
give some examples on how to connect an external device to the relay box. Please note that there are
several other ways to use the relay box than described in this guide.
ALWAYS be sure that 230 VAC is disconnected when installing/changing ANYTHING.
When you receive the relay box, relay 1 and 2 are already configured to run screen mode.
If you do not want to use the screen mode or control low voltage unites always remember to remove
fuses F1 and F2 (Screen 5A)
Connecting the Relay box to the control system.
Pin name
Description
GND
Ground
RELAY-4
Control input for Relay 4. Relay is activated when
pin is connected to GND.
RELAY-3
Control input for Relay 3. Relay is activated when
pin is connected to GND.
RELAY-2
Control input for Relay 2. Relay is activated when
pin is connected to GND.
RELAY-1
Control input for Relay 1. Relay is activated when
pin is connected to GND.
PWR OUT
12 V Dc positive supply for the control system
GND
Ground
RS-232 in
RS-232 Receive data from control system (or PC
when testing or setting up the relay box)
GND
Ground
If you control the relay box with both its input controls and by RS-232, you have to be aware that if the
relay is activated by RS-232, you cannot release it with the input controls and vice versa.
When controlling the relay box from the Neets Control – EU system you can connect it like this:
Doc no#: 306-0008-002-001 Rev500 Neets 4 relay
Page 6
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