Putting Into Operation; Opening Weighing Terminal; Connecting Weighing Platform; Connecting Serial Interface - Mettler Toledo IND221 Instrucciones De Manejo

2 Putting into operation

2.1 Opening weighing terminal

CAUTION!
▲ Before opening the terminal, switch the terminal off and disconnect the
Opening IND221
➜ Unscrew 4 screws and lift off cover.
Opening IND226
The cover of the IND226 is locked by 4 spring clips.
1. Insert the tip of a flat-blade screwdriver into one of the two slots located on the bottom of
the cover, and gently push in towards the enclosure until a "pop" sound is heard.
2. Lift off cover.

2.2 Connecting weighing platform

1. Insert the weighing platform cable through the cable gland into the weighing terminal.
2. Connect the weighing platform cable to the 7-pin terminal strip J2 according to the
following table.
Terminal
Assignment
➜ With 4-wire load cells make bridges with: +EXC and +SEN, –EXC and –SEN.

2.3 Connecting serial interface

IND221
With IND221, the interface connection is carried out as a 9-pin D-sub male connector.
➜ Plug in the 9-pin D-sub cable on the connector at the weighing terminal.
IND226
With IND226, the serial interface must be connected inside the weighing terminal.
1. Insert the interface cable through the cable gland into the weighing terminal.
2. Connect the interface cable to the 3-pin terminal strip J3 according to the following table.
Terminal
Assignment
power supply.
1 2
+EXC +SEN
1 2
TXD RXD
3 4
+SIG Shield
3
GND
8
5 6
–SIG –SEN
7
–EXC