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Product short description:
  • Designed for use with Johnson Controls N2 or BACnet MS/TP bus
  • 115V AC ±10%, 50/60 Hz, 0.05A or 230V AC ±10%, 50/60 Hz, 0.03A or 24V AC ±10%, 50/60 Hz, 0.18A typical power
  • Operating temperature: -25 to 70° C (-13 to 158° F)

4683-TTM-1F: 115V AC Power
4683-TTM-2F: 230V AC Power
4683-TTM-3F: 24V AC Power

4683 Series: RS485-to-RS485 Network Repeater Description

4683-TTM-1F: 115V AC Power
4683-TTM-2F: 230V AC Power
4683-TTM-3F: 24V AC Power

Acromag’s RS-485 network repeater device allows users to take full advantage of the RS-485 standard’s extended communication distances and multi-dropping capabilities. In addition, these devices offer field selectable End-of-Line Network (EOLN) terminations on both the A and B networks.

Operation is transparent to all devices and no handshaking is required. Up to thirty-two RS-485 devices can be driven. Network repeaters are ready to mount on any base plate.

Or, for a harsh environment, it can be installed in a NEMA enclosure of your choice. No enclosure is necessary for use in a laboratory or office. Installation requires mounting, connecting power and cables, and setting the baud rate.

Approvals
UL/cUL listed: Energy management equipment

4683 Series: RS485-to-RS485 Network Repeater Operation

Model 4683-TTM-xF network repeaters isolate and boost RS-485 signals allowing communication signals to travel another 4000 ft. Each repeater permits the addition of another 32 unit load to a network.

The repeater has two RS-485 “sides” known as the A and B sides. The A side typically connects to the network towards the host and the B side connects to the extended network. Functionally, the A and B sides are equivalent.

Repeaters receive AC power through a 3-screw terminal strip. Transient signal protection is provided on both RS-485 sides.

When both RS-485 lines are idle, each side is in receive mode. When a ‘1’ to ‘0’ transition is detected (signifying a start bit) on either side, the opposite side’s transmitter is enabled. The transmitter stays enabled for one character’s time (based on the baud rate switch setting). The received character is then passed through.

4683 Series: RS485-to-RS485 Network Repeater Features & Benefits

  • Designed for use with Johnson Controls N2 or BACnet bus.
  • I/O signal isolation. No handshaking. No extra control lines.
  • Baud rates of 600, 1200, 2400, 4800, 9600, 19.2K, 38.4K, and 76.8K are switch selectable.
  • Field-selectable end-of-line network terminations on both A and B sides.
  • Electrical transient protection is provided. This protects the host computer from destructive noise spikes and other transient signals.
  • Status LED’s indicate transmission direction and power applied.
  • 115V, 230V, and 24V AC power models available
What is Modbus/RS485? An Introduction - 8500648 (Log in to view the file)
Modbus/RS485 Network an Introduction White Paper This white paper describes the operation of Modbus as it relates to Acromag Series 900MB I/O modules.   Learn more: What is Ethernet/IP?

Manuals

4683-TTM-xF User Manual (Log in to download the file)

Additional information

Weight 48 oz
Dimensions 7 × 4.5 × 2.5 in
Part Number

4683-TTM-1F: 115V AC power, 4683-TTM-2F: 230V AC power, 4683-TTM-3F: 24V AC power

Communication

Modbus-RTU, RS422/485

Product Series

4683 Series, BusWorks 900MB

  • Description

    4683 Series: RS485-to-RS485 Network Repeater Description

    4683-TTM-1F: 115V AC Power
    4683-TTM-2F: 230V AC Power
    4683-TTM-3F: 24V AC Power

    Acromag’s RS-485 network repeater device allows users to take full advantage of the RS-485 standard’s extended communication distances and multi-dropping capabilities. In addition, these devices offer field selectable End-of-Line Network (EOLN) terminations on both the A and B networks.

    Operation is transparent to all devices and no handshaking is required. Up to thirty-two RS-485 devices can be driven. Network repeaters are ready to mount on any base plate.

    Or, for a harsh environment, it can be installed in a NEMA enclosure of your choice. No enclosure is necessary for use in a laboratory or office. Installation requires mounting, connecting power and cables, and setting the baud rate.

    Approvals
    UL/cUL listed: Energy management equipment

    4683 Series: RS485-to-RS485 Network Repeater Operation

    Model 4683-TTM-xF network repeaters isolate and boost RS-485 signals allowing communication signals to travel another 4000 ft. Each repeater permits the addition of another 32 unit load to a network.

    The repeater has two RS-485 “sides” known as the A and B sides. The A side typically connects to the network towards the host and the B side connects to the extended network. Functionally, the A and B sides are equivalent.

    Repeaters receive AC power through a 3-screw terminal strip. Transient signal protection is provided on both RS-485 sides.

    When both RS-485 lines are idle, each side is in receive mode. When a ‘1’ to ‘0’ transition is detected (signifying a start bit) on either side, the opposite side’s transmitter is enabled. The transmitter stays enabled for one character’s time (based on the baud rate switch setting). The received character is then passed through.

    4683 Series: RS485-to-RS485 Network Repeater Features & Benefits

    • Designed for use with Johnson Controls N2 or BACnet bus.
    • I/O signal isolation. No handshaking. No extra control lines.
    • Baud rates of 600, 1200, 2400, 4800, 9600, 19.2K, 38.4K, and 76.8K are switch selectable.
    • Field-selectable end-of-line network terminations on both A and B sides.
    • Electrical transient protection is provided. This protects the host computer from destructive noise spikes and other transient signals.
    • Status LED’s indicate transmission direction and power applied.
    • 115V, 230V, and 24V AC power models available
  • Tech Papers

    What is Modbus/RS485? An Introduction - 8500648 (Log in to view the file)
    Modbus/RS485 Network an Introduction White Paper This white paper describes the operation of Modbus as it relates to Acromag Series 900MB I/O modules.   Learn more: What is Ethernet/IP?
  • Specs & Data Sheets

    Manuals

    4683-TTM-xF User Manual (Log in to download the file)

  • Additional information

    Additional information

    Weight 48 oz
    Dimensions 7 × 4.5 × 2.5 in
    Part Number

    4683-TTM-1F: 115V AC power, 4683-TTM-2F: 230V AC power, 4683-TTM-3F: 24V AC power

    Communication

    Modbus-RTU, RS422/485

    Product Series

    4683 Series, BusWorks 900MB