User's Manual

Page 22
Manual ION-M17HP-19HP
MF0143AXA.doc
Control Connector (RS485 / RS232)
This 8-pin male connector (type: Binder Series 712) primarily supports control of the
Extension Unit via RS485 bus.
PIN Assignment
1 not connected
2 RS232 Rx
3 RS232 Tx
4 not connected
5 GND (RS232)
6 RS485 R+/D+
7 RS485 GND
8 RS485 R-/D-
figure 3-7 RS485 connector table 3-2 RS485 connector, pin assignment
3.2.3. Grounding
Grounding must be carried out. Connect an earth-bondin
g cable to the grounding
connection provided at the outside of the Remote Unit (see section 3.2.2
Connections). Do not use the grounding connection to connect external devices.
figure 3-8 Grounding bolt figure 3-9 Grounding bolt, schematic view
After loosening the hex nut, connect the earth-bonding cable between the two
washers as illustrated in the figures above. Then, fasten all parts again with the hex
nut.