EF315_r5.1(v12.22) – 03/2023 page 10
- Terminals 10,11,12,13: input for measure 2 in case of chlorine cell
o For CAC cell, connect as follows:
terminal 10 = positive = green wire
terminal 11 = reference = yellow wire
terminal 12 = IN = white wire
terminal 13 = negative = brown wire
o For amperometric cell CLE12, connect as follows:
terminal 10 = NC
terminal 11 = reference
terminal 12 = brown wire (Pt electrode)
terminal 13 = blue wire (Cu electrode)
- Terminals 14,15: temperature input for PT100 sensor
- Terminals 16,17 (IN- =shield, IN+ =C86): input for measure 1 (pH), input at very high impedance,
connected to the BNC coaxial cable
- Terminals 18,19 (IN- =shield, IN+ =C92): input for measure 2 in case of redox electrode, input at
very high impedance, connected to the BNC coaxial cable
- Terminals 20,21 (IN+, Rif.): input Level 1 (pH), contact closed = missing level
- Terminals 22,23 (IN+, Rif.): input Level 2 (chlorine), contact closed = missing level
- Terminals 24,25,26: FLOW input; depending on configuration, this input can be connected to a NPN
micro-magnetic flow sensor (+Va = brown wire, IN = black wire, Ref. = blue wire), or to a voltage-free
contact of a flow-switch, using only terminals 25 and 26.
- Terminals 27,28: EXT.CONS. input – voltage-free contact of a flow switch or filter pump contactor
- Terminals 29,30: output contact for alarm relay
- An additional optional board can also be present for the RS232C serial communication, wired to
an M8 connector as follows: pin 1 = RX, pin 2 = TX, pin 3 = GND, pin 4 = not used.
Warning! The connection of the serial port to a PC/PLC or other device with different reference
with respect to the liquid to be analysed, can cause instability, unreliable readings and - in
extreme cases – damages to the measurement sensors. In these cases it is recommended to
use a serial galvanic insulator.
START-UP
At start-up, the EF315 displays for a few seconds the software version and the output configurations,
then checks the memory status and shows an error messages if stored data are not correct.
Finally, enters the normal measuring mode by displaying readings and updating the control outputs and
the relay status.
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