Analog Output Connections - Mettler Toledo IND131 Guia De Instalacion

2.4.5.4.

Analog Output Connections

The analog output option board (Figure 2-53) fits into the PLC interface slot on the Main board. It
provides a 4-20mA analog signal proportional to the weight applied to the scale.
There are no special cabling requirements for the DIN or panel-mount enclosures. On the harsh and
J-Box enclosures, the cable must enter through the smaller, 16mm gland identified for PLC cabling
in Figure 2-25, Figure 2-26 or Figure 2-27. Use one of the supplied black rubber grommets around
the cable if required to maintain the IP rating of the enclosure. Connections to this option should be
made as shown in Figure 2-54.
2-34 METTLER TOLEDO IND131/IND131x/IND331/IND331xx Installation Manual
Figure 2-53: Analog Output Option Board
NOTES:
1. ERROR OUTPUTS MUST BE MONITORED TO DETERMINE WHEN
WEIGHT SIGNAL IS VALID.
2. ERROR SIGNALS ARE OPEN COLLECTOR, CURRENT SINKING
OUTPUTS.
3. VOLTAGE: 5-30 VDC, 200 mA MAXIMUM CURRENT.
4. USE TWO-CONDUCTOR SHIELDED CABLE FOR SIGNAL LINES.
5. MINIMUM RESISTANCE OF DEVICE LOAD IS 500 OHMS.
6. WIRE SIZE: 14 AWG (2.1 mm
22 AWG (0.3 mm
Figure 2-54: Wiring the Analog Output
2
) MAXIMUM
2
) MINIMUM
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