Mettler Toledo M400 Configuration Rapide page 6

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.
TB2 for 1 ⁄ DIN
2
1 AO1+
2 AO1– / AO2–
3 AO2+
4 AO3+
5 AO3– / AO4–
6 AO4+
TB1
7 DI1+
8 DI1– / DI2–
1
9 DI2+
TB4 – ISM (digital) Sensors
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
TB3 – Conventional (analog) Sensors
Cond 2-E or 4-E
Term. Function
1 Cnd inner1
2 Cnd outer1
3 Cnd inner2
4 Cnd outer2 / Shield
5 –
6 RTD ret / GND
7 RTD sense
8 RTD
9 +5V
6
1 14
9 1 9 1 9
TB2 TB3 TB4
Optical Oxygen pH, amp. Oxygen, Cond 4-e
Color Color
brown –
black –
– transparent (cable core)
grey and yellow red (shield)
– –
– –
blue –
white –
– –
Color*
white
white / blue
blue
black
–
bare shield
red
green
–
Note: This is a
4-wire-product
1 NO1
with an active
2 COM1
4–20 mA ana-
3 NC1
log output.
Please do not
4 NO2
supply to
5 COM2
Pin1–Pin6 of
6 NC2
TB2.
7 COM5
O
2
Function Color
– –
Anode red
– –
Shield / GND green / yellow
Cathode transparent
GND / NTC white & gray
– –
NTC green
+5V –
NO = normally open
TB1 for 1 ⁄ DIN
2
(contact is open
8 NC5
if unactuated).
9 COM6
NC = normally closed
10 NO6
(contact is closed if
11 NO3
unactuated).
12 COM3
13 NO4
14 COM4
Terminal 4 and 6 are inter-
nally connected, either
terminal can be used to
connect a wire.
* Transparent
not connected