Mettler Toledo IND131 Installationshandbuch Seite 54

IND131/IND331 Terminals Installation Manual
Active Input
Selecting the inputs as active enables connection of switches or other simple
devices to trigger an input. No voltage is supplied by the external simple device.
The active and passive positions of the selector switch are shown in Figure 2-47.
The wiring for the inputs of the solid state version is the same as for the relay
version. An example of this is shown in Figure 2-43.
Passive Input
Selecting the inputs as passive (Figure 2-47) enables other devices such as PLCs
to provide the trigger voltage (typically 12 VDC or 24 VDC, maximum 30 VDC) to
turn the inputs "on".
The wiring for the inputs of the solid state version is the same as for the relay
version. An example of this is shown in Figure 2-44.
Solid State Outputs
The solid state outputs can switch up to 30 VAC or 30 VDC voltages at 400mA
maximum. The solid state outputs should be wired up as shown in Figure 2-48.
2-30
Active Position
Figure 2-47: Active/Passive Input Switch
NOTES:
Figure 2-48: Relay Outputs
Passive Position
1. SOLID STATE MOS FET RELAYS.
2. SOLID STATE OUTPUT RATING:
AC: Max. 30 VAC, 400mA INTO RESISTIVE LOAD
DC: 5-30 VDC, 400mA INTO RESISTIVE LOAD.
3. ALL INDUCTIVE LOADS MUST BE SUPPRESSED.
4. WIRE SIZE:
2
18 AWG (0.8 mm ) MAXIMUM
2
24 AWG (0.2 mm ) MINIMUM