Terminal Block (Tb) Definitions - Mettler Toledo M200 easy Guia De Inicio Rapido

3

Terminal Block (TB) definitions

Power connections are labeled – N for Neutral and +L for Line, for 100 to 240 VAC or 20 – 30 VDC.
1/4DIN TB2 for 1/4DIN
1 AO1+
2 AO1–/AO2–
3 AO2+
4 AO3+*
5 AO3–/AO4–*
6 AO4+*
7 DI1+
8 DI1–/DI2–*
9 DI2+*
TB1A for 1/4DIN
1 NO2
2 COM2
3 NC2
4 –
5 –
6 –
7 –
TB3/TB4 for and
1/2DIN
Sensor for pH, ORP, Cond 4-e, Oxygen
Term. Function
1 24 VDC
2 GND (24 VDC)
3 1-wire
4 GND (5 VDC)
5 –
6 GND (5 VDC)
7 RS485-B
8 RS485-A
9 5 VDC
* Bare wire not connected.
6
TB4
9
1
TB1A
1 7
TB1B
1 7
TB1B for 1/4DIN
NO = normally open
(contact is open if
1 NO1
unactuated).
2 COM1
NC = normally closed
3 NC1
(contact is closed if
4 –
unactuated).
5 –
6 –
7 –
* Dual-channel only.
versions
1/4DIN
Color
–
–
Transparent (Cable core) 1-wire
Red (Shield)
–
–
–
–
–
1/2DIN TB2 for 1/2DIN
TB3
1 AO1+
9
2 AO1–/AO2–
3 AO2+
4 AO3+*
1
5 AO3–/AO4–*
9
6 AO4+*
7 DI1+
8 DI1–/DI2–*
1
9 DI2+*
TB2
1 NO1
2 COM1
3 NC1
4 NO2
5 COM2
6 NC2
7 –
Sensor for Cond 2-e
Function
24 VDC
GND (24 VDC)
GND (5 VDC)
–
GND (5 VDC)
RS485-B
RS485-A
5 VDC
TB1 1 14
1 9 1 9 1
TB2 TB3
TB1 for 1/2DIN
8 –
9 –
10 –
11 –
12 –
13 –
14 –
Color*
–
–
–
–
–
Green
Orange
White / orange
White / green
9
TB4