Output Power Connections; Switch Input Connections; Tank Level Sensor Connections; Bms Connection - 3P Technik TC320 Installation And Operating Manual

Output Power Connections

Pumps, solenoids, motirised vbalves etc. are powered from the rightmost green terminals on the lower
right of the PCB. From left to right terminals 2,3,4 and 5 supply Outputs 1,2,3 and 4 (ternimal 1 is the BMS
output). The terminal blocks are socketed and can be withdrawn from the PCB for ease of access.

Switch Input Connections

These inputs are used to connect switches, rain sensors or other control devices into the panel, and are
used alongside the level probes to decide when to switch an output on or off.
They are connected to the 10 pin plug on the bottom left of the PCB marked "inputs" using the shielded
cable provided, in the following order.
Input 1 Pins 1 and 2
Input 2 Pins 3 and 4
Input 3 Pins 5 and 6
Input 4 Pins 7 and 8
Input 5 Pins 9 and 10
Polarity is unimportant.
Note – If cables need to be routed into the controller other than with the cables glands fitted, ensure
they enter the bottom of the casing and do not cross over the circuit board. If necessary use trunking to
route cables appropriately.

Tank Level Sensor Connections

Connect the tank level sensor(s) to con3 and also con4 if you have a 2
White wire to the leftmost pin of the 2 pin connector
Brown wire to the rightmost pin of the 2 pin connector
The level sensor connected to con3 is Tank 1
The level sensor connected to con4 is Tank 2 (if fitted)
Note – these inputs sense current in milliamps, don't test them by shorting them out, the input circuit will
be damaged and you will have to send the board back for repair.

BMS connection

The BMS connection provides a non-voltage relay capable of switching any 230V source up to 10A. Three
contacts are provided, Common, NO and NC. Connect your live conductor from the BMS system to
Common, and output will be switched to NC in the absence of an alarm condition, switching to NO upon an
alarm.

Troubleshooting

Refer to the Safety instructions. No electrical works should be carried out other than by an appropriately
qualified Electrician. Permits to work may be required at local site conditions. If in any doubt, consult your
system supplier.
TC Series Controller v1.30
www.3ptechik.co.uk
nd tank level sensor.
09-August-2017 Page 7 of 28