RS-485 Repeater Communication Kit Electronic Technician Assistant (ETA)
RS-485 is the most common communications standard for DDC controllers; however, it is limited to 32 unit loads and 4,000 feet. Extending the network beyond 32 unit loads or 4,000 feet requires repeaters.
The RS-485 Repeater Communication Kit provides all the functions for one repeater and remote RS-485 network, plus it comes in a self-contained, easy-to-apply and cost effective assembly. The kit also aids in troubleshooting because LEDs indicate when power is applied and communications are present.
The RS-485 Repeater Communication Kit includes:
• One RS-485 Repeater (RPTR) module which connects two RS-485 segments together. Data from one segment repeats to the other segment and vice versa. Each RPTR module allows an additional 32 unit loads and 4,000 feet;
• A 350 mA voltage converter (VC350) to provide the higher current necessary for flawless communications;
• A Single Repeater Back Plane (SRBP) to mount the RPTR module and provide pluggable connectors for power and three RS-485 cables;
• A four inch long piece of 2.75" snaptrack to easily mount the entire assembly.
Part Number
Description
BA/RPTR-KIT
RS-485 Repeater Communication Kit
includes one RS-485 Repeater (RPTR) Module, a 350 mA voltage converter (VC350), a Single Repeater Backplane (SRBP) and a 4" piece of 2.75" snaptrack
(Kit includes one RS-485 Repeater Module, a 350 mA voltage converter, a Single Repeater Backplane and a 4" piece of 2.75" snaptrack, see bottom of page for info on the individual parts in the kit)
INDIVIDUAL PRODUCTS IN THE RS-485 REPEATER KIT
RPTR - RS-485 Repeater
Standard RS-485 communications are limited to 32 unit loads and 4,000 feet. Extending the network beyond 32 unit loads or 4,000 feet requires repeaters. Each RPTR module allows an additional 32 unit loads or 4,000 feet.
VC350 Voltage Converter BAPI’s voltage converters are a cost effective way of converting 24 VAC to 5, 15 or 24 VDC for use on peripheral devices that require DC voltage. The converters are available with outputs of 75 mA, 100 mA or 350 mA. All converters are very compact and designed to fit into standard 2.75" snaptrack.
SRBP - Single Repeater Backplane
Many times you need to place only one communications repeater at a specific point in a communications network. A four-position Communications Repeater Backplane (RBP), described above, is more than you need. The SRBP provides a convenient single repeater solution.
Snaptrack All good projects need a proper foundation and the ETA modules are no exception. The 2.75" Snaptrack provides a sturdy, secure and easy mounting method for the ETA line.
