Terminal Blocks - Mettler Toledo IND780 Guide D'installation

2.7.5.2.

Terminal Blocks

The field connection on the Flow Meter Option Board consists of a single Phoenix Contact 10 pin
socket connection block. It receives a single Phoenix Contact 10-pin plug connection block. Figure
2-69 shows the Flow Meter Option Board with the location of pin number 1 indicated (adjacent to
the corner of the board).
Pin 1
Flow Meter Input, Discrete Output
and GND interface
Guide tab
USB Interface
Figure 2-69: Flow Meter Option Board
The Phoenix Contact 10-pin connector pin outs are as follows:
Figure 2-70: Flow Meter Connector
Pins 3 and 10 (the frame grounds for Channels 1 and 2) provide floating grounds, and are the
return lines for pins 1 and 8 (the high inputs for Channels 1 and 2). This maintains the isolation of
the input circuitry from the rest of the board electronics.
2-44 64057253 | 14 | 08/2014
METTLER TOLEDO IND780 Installation Guide