Transcript
PRODUCT DATA
REPEATER The Repeater can serve two functions in the Carrier Comfort Network (CCN). Those functions are: • extending the length and capacity of a CCN communications bus • RS-485 to RS-232 protocol conversion The Repeater regenerates and retransmits bidirectional signals. Its operation is transparent to all devices communicating through it, and it can support communications at up to 9600 bits per second in both directions. The Repeater extends a CCN communications bus by linking two bus segments. Each bus segment can be up to 1000 feet in length and can support up to sixty devices. Up to three Repeaters can be used to join segments into one bus, for a maximum length of 4000 feet with up to 239 devices supported. Repeaters can extend both primary and secondary buses. The Repeater can be used as a protocol converter to interface a RS-232 device such as ComfortWORKS to the CCN communications bus, which uses RS-485 signaling. It converts signals from the communications bus into RS-232 signals and signals from the interfaced device into RS-485 signals. A Repeater may be installed in a UT203 FID enclosure, or it may be mounted by itself. Each Repeater is functionally divided into “A” and “B” sides. Each side consists of a transceiver with associated I/O connector(s) and a power connector. The two sides share a crystal oscillator clock for signal regeneration.
Signals pass between the two sides through optical isolators so it is possible for the Repeater to provide complete electrical isolation between its two sides. The A and B sides of the Repeater both have an individual power connector. The two are connected internally when only the A side is connected to a power source. Connecting a separate power source to the B side (PWR2) will optically isolate the two sides from each other. Either Repeater power connector can receive power from a UT203 FID power supply or from ac line voltage through an external 18 volt transformer.
The A side has one 4 pin connector, COMM1, for CCN communications bus RS-485 signals. The B side has two connectors, designated together as COMM2. One is a 4 pin communications bus connector, and the other is a 25 pin connector for RS-232 signals. Only one COMM2 connector may be used at a time. Next to the connector(s) for each side is a LED that lights while the side is transmitting. Specifications subject to change without notice.
© 2000, Carrier Corporation 808-525
Book 4 Tab BC1d
Printed in U.S.A. Revised 1/00
PRODUCT DATA SPECIFICATIONS Power Requirements: COMM1 portion .................................20 Vac @ 0.5 A (28 Vdc @ 0.25 A) COMM2 portion ............................... 20 Vac @ 0.25 A (28 Vdc @ 0.25 A) Dimensions........ 11 1/4 in H X 1 7/8 in W X 6 7/8 in D (28.6 cm H X 4.8 cm W X 17.5 cm D) Operating Temperature ....................... -40oF to 158oF (-40oC to 70oC) Storage Temperature ......................... -40oF to 185oF (-40oC to 85oC) Operating Humidity ..... 10 to 95%, non-condensing Conforms to guidelines for radiated and conducted emissions for a Class A device as stated in FCC Rules and Regulations Part 15, Subpart J. UL916 PAZX, ULC (CSA), and CE MARK (light industrial listed).
Specifications subject to change without notice.
© 2000, Carrier Corporation 808-525
Printed in U.S.A. Revised 1/00
