Mettler Toledo IND570 Manual Del Usuario página 59

2.4.6.3.2. Passive Input Wiring
The inputs can be selected as either active or passive via a switch on the board. When "active" is
selected, an external voltage source is required.
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30205319 | 04 | 08/2016
Notes for Passive Input Discrete I/O wiring:
Voltage: 5-30VDC, 10 mA max. current. Voltage polarity may be reversed
The two IN COM terminals are connected internally on the DI/O pcb so either IN COM can be
utilized during installation. Two IN COMs are provided as a convenience for installations where
external switches/contacts are not located together and multiple commons require wire
termination.
Do not bundle input wiring with power wiring or any other high energy cables
Wire sizes: 22 AWG min./14 AWG max.
METTLER TOLEDO IND570 Weighing Terminal Installation Manual
Figure 2-42: Passive Input Wiring
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