Mettler Toledo IND560 PDX Guia De Instalacion página 56

Active Input
Selecting the inputs as active (Figure 2-60) enables connection of switches or
other simple devices to trigger an input. No voltage is supplied by the external
simple device.
An example of how to wire to the active inputs is shown in Figure 2-43.
Figure 2-43: Active Input Connections
IND560 PDX Installation Manual
NOTES:
1. VOLTAGE IS LOGIC LEVEL 5 VDC. LOW RESISTANCE
CONTACTS RECOMMENDED. MAXIMUM CABLE LENGTH:
20 FEET 96 METERS.
2.
DO NOT BUNDLE INPUT WIRING WITH POWER WIRING OR
ANY OTHER HIGH ENERGY CABLES.
3.
SWITCHES MAY BE REPLACED WITH RELAY DRY
CONTACTS.
4. 2
WIRE SIZE: 14 AWG (2.088 mm ) MAXIMUM
2
22 AWG (0.322 mm ) MINIMUM
2-27