Connectors & Wiring

The iCartridge 2.0 uses WEIPU SA6 and SA8 series lemo-style connectors for all sensor and power connections, plus standard DB9 and USB Type A connectors for communication.

Flow Schematic

Download Flow Schematic PDF

Connector Overview

Sensor & Peripheral Connectors (SA6 Series)

The SA6 series connectors are used for all sensor and peripheral connections. The plug connectors mounted on the enclosure are listed below. To connect to the iCartridge 2.0, use the matching in-line cable socket (female):

Plug on Enclosure	Matching Cable Socket	Pins
SA610-P2II	SA615-S2	2
SA610-P3II	SA615-3S	3
SA610-P4II	SA615-4S	4

Power Connector (SA8 Series)

Plug on Enclosure	Matching Cable Socket	Pins
SA810-P2II	SA815-2S	2

Datasheets

• SA6 Series Connector Datasheet
• SA8 Series Connector Datasheet
• SA6/SA8 In-line Cable Socket Assembly Instructions (Solder)

Pinouts by Connection

Temperature Sensor (PT1000 RTD)

Connector: SA610-P3II (3-pin)

Pin	Signal	Wire Color
1	RTD	Red*
2	RTD	Red*
3	RTD	White*

*Check sensor datasheet for exact wire colors.

Accelerometer (External)

Connector: SA610-P4II (4-pin) — I2C1

Pin	Signal
1	SDA
2	SCL
3	VCC
4	GND

Pressure Sensor 1 (Process Fluid)

Connector: SA610-P4II (4-pin) — I2C2

Pin	Signal
1	SDA
2	SCL
3	VCC
4	GND

Pressure Sensor 2 (Barrier Fluid)

Connector: SA610-P4II (4-pin) — I2C3

Pin	Signal
1	SDA
2	SCL
3	VCC
4	GND

SSR 1

Connector: SA610-P2II (2-pin)

Pin	Signal
1	SSR1
2	GND

SSR 2

Connector: SA610-P2II (2-pin)

Pin	Signal
1	SSR2
2	GND

Pump (Grundfos ALPHA2 15-40 130)

Connector: SA610-P3II (3-pin)

The pump interface is optically isolated.

Pin	Signal
1	PUMP CTRL (PWM)
2	PUMP FDBCK
3	GND

DC Power Input (24V)

Connector: SA810-P2II (2-pin)

Pin	Signal
1	VCC 24V
2	GND

RS485 (Modbus)

Connector: SUB-D DB9

Pin	Signal
1	RS485 A
5	GND
6	RS485 B

USB

Connector: USB Type A

Standard USB 2.0 connection with optical isolation (ADuM4160). Provides CDC virtual serial port.