Electro-Voice 250 Mounting the Nexus External I/O Modules, Nexus I/O Module Communication Ports

3.4: Mounting the Nexus External I/O Modules

Secure the mounting brackets to the I/O using the screws supplied (#440 pan-head screws). Next, secure the brackets to a flat surface using a #8 screw with a lock washer.

If multiple I/O modules are connected together, as shown in Figure 3.4, secure a mounting bracket to both ends of the group. One Nexus will supply power for up to four I/O modules. To connect more than four I/O modules, use an additional power supply, such as the EIG PSIO. Connect multiple I/O modules using the RS-485 side ports.

Six feet of RS-485 cable harness is supplied. The cable harness brings power to the display from the Nexus Meter, which supplies 15–20V DC at 50–200mA. See Chapter 5 for power supply and com- munication details.

1.125” (2.85cm) Mounting Bracket

2 x .625” (1.58cm)

0.015” (.38mm)

4.215” (10.70cm)

Mounting Bracket

Figure 3.7: Nexus I/O Modules Mounting Diagram, Overhead View

Mounting Brackets (MBIO)

Female RS-485 Side Port

I/O Port

Male RS-485 Side Port

Figure 3.8: Nexus I/O Module Communication Ports

Electro Industries/GaugeTech Doc # E107706 V1.25 3-6