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ENGLISH
Fig. 3 – Connection diagram
TERMINAL BOARD “A”
COM
Relay 1
Setpoint 1 pH (o RX) ON-OFF / PWM output relay timed pulses
NO
COM
1.
Relay 2
Setpoint 2 pH (o RX) ON-OFF / PWM output relay timed pulses
NO
COM
Relay 3
Auxiliary ON-OFF AUX output for remote equipment with Timer programming
NO
COM
2.
Relay 4
ALARM ON-OFF relay output for external signalling device
NO
TERMINAL BOARD “B”
IN 1
Digital input of the level probe for the chemical tank
IN 2
NOT Connected
IN 3
Proximity Sensor input BLACK + / BLUE – wires
TERMINAL BOARD “C”
+12VDC out
12 VDC output of the Proximity Sensor BROWN wire
4/20 mA1
(+) Proportional output pH (or RX) 4-20 mA1 for metering pump mA, PLC or data collection
-
(-) Proportional output pH (or RX) 4-20 mA2 for metering pump mA, PLC or data collection
4/20 mA2
(+) Proportional output pH (or RX) 4-20 mA2 for metering pump mA, PLC or data collection
TERMINAL BOARD “D”
+
PT100 temperature probe (RED wire)
S +
PT100 temperature probe (BLUE wire)
S -
PT100 temperature probe (GREEN wire)
-
PT100 temperature probe (YELLOW wire)
TERMINAL BOARD “E”
A
ORANGE wire
Connection for RS485 / ETHERNET external module.
For connection to the ETACLOUD, the external KIT CONNECT module must be
connected (NOT included with the instrument)
code KST0000101 KIT CONNECT X
INSTRUMENTS SERIES M
B
YELLOW wire
-
BLACK wire
+
Not Connected
