Current Loop Interface - Mettler Toledo IND560x Guide D'installation

Figure 3-40: Passive Output Connections
3.4.3. I.S. Current Loop Interface
There is an optional intrinsically safe current loop interface board that provides communication to
an ACM200 or ACM500 in a safe area or an IND226x terminal as a remote display inside the
hazardous area. This option can be ordered already installed into the IND560x at the factory or is
available as a kit that can be installed in the field. Instructions are included with the kit showing the
installation procedure of the option into the IND560x terminal as shown in Figure 3-41.
Figure 3-41: I.S. CL Interface Board – Harsh (left) and Panel (right) installations
The interface board provides two circuits for communication to the ACM500 or a single channel to
the ACM200 or IND226x terminal. If connecting to an ACM500, depending upon the options used
in the ACM500, it may not be necessary to provide connections to both circuits. Refer to Table 3-12
to determine if both the COM4 and the COM5 circuit must be connected.
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