Powering Devices In Parallel; Ethernet Port; Field Bus Connections And Openbas-Acc-Db9 (Openbas-Nwk-Eth3 Only); Openbas-Acc-Db9 - Mircom OpenBAS-NWK-ETH3 Installation Manual

4.2.1 Powering Devices in Parallel

When powering OpenBAS-NWK-ETH3 or OpenBAS-NWK-ETHXP and an OpenBAS-HV-
NX10 series controller in parallel, connect the negative or common of both power supplies to
one of the 0V terminals of the controller.
The devices should be no more than 50 cm (20") apart.

Figure 12 Powering Devices in Parallel

4.3

Ethernet Port

Connect a category 5 or better cable to the Ethernet port in order to add the OpenBAS system
to an IP network.
4.4 Field Bus Connections and OpenBAS-ACC-DB9 (OpenBAS-
NWK-ETH3 only)
COM1 allows the field replacement of the RS-485 module with the OpenBAS-ACC-RS485
optically isolated RS-485 module or OpenBAS-ACC-RS232 conversion module. See section
3.3.1 on page 12.
To avoid intermittent communication blackouts, the isolation provided by the OpenBAS-ACC-
RS485 module is highly recommended for noisy environments, and to prevent damage to the
boards in extreme cases, especially if the OpenBAS-NWK-ETH3 device is inside an enclosure
containing high voltage wiring.

4.4.1 OpenBAS-ACC-DB9

OpenBAS-ACC-DB9 is a DB9 adapter which is installed in COM1 or COM2.
20 (30)
OpenBAS-NWK-ETH3
24V
0V
24 V
OpenBAS-HV-NX10
Series
24V
0V
0 V
Field Wiring and LEDs