Mettler Toledo IND131 Installationshandbuch Seite 53

Relay Outputs
The relay outputs can switch up to 250 VAC or 30 VDC voltages at 1A maximum.
The relay outputs are not polarity-sensitive since they are dry contact outputs. An
example of wiring to the outputs is given in Figure 2-45.
Discrete I/O (Solid State) Connections
The solid state output version of the COM2/Discrete I/O option board (Figure 2-46)
provides two isolated inputs and four low voltage solid state outputs. The inputs
can be selected as either active or passive based on the position of the slide switch
on the board.
Active/Passive
slide switch
Figure 2-46: COM2/Discrete I/O (Solid State) Option Board
IND131/IND331 Terminals Installation Manual
NOTES:
1. DRY CONTACT RELAYS.
2. RELAY CONTACT RATING:
AC: 24-280 VAC, 1.0 AMP. INTO RESISTIVE LOAD
DC: 5-24 VDC, 1.0 AMP. INTO RESISTIVE LOAD.
MAXIMUM SWITCHING POWER: 250VA, 30 W.
3. MAXIMUM OUTPUT CIRCUIT CURRENT = 3 AMPS.
4. ALL INDUCTIVE LOADS MUST BE SUPPRESSED.
5. WIRE SIZE: 18 AWG (0.8 mm
24 AWG (0.2 mm
Figure 2-45: Relay Outputs
2
) MAXIMUM
2
) MINIMUM
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