D15P1228AW L-COM | Alldatasheet
Document overview
- Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
- PDF pages: 4
Technical content
Features
- Individual protection circuits for RS-485 control and power lines
- 3-Stage protection provided for all lines
- Will also protect two single ended data, analog or control lines
- Available in AC or DC versions
- Impact and weather resistant enclosure with locking hinged cover
Description
The HyperLink AL-D15P series are designed to provide superior lightning and surge protection for RS-485 control and AC/DC power lines. These protectors incorporate individual protection circuits for the RS-485 control lines and AC/DC power lines. All housed in one weatherproof resistant enclosure. RS-485 Control Lines A high power 3- stage design is used to provide protection for the RS -485 control line. The 3-stage design can handle higher-level transients than a protector that uses only diodes. The first stage is comprised of a differential gas discharge tube. Stage two is a pair of current limiting series resistors and the final stage is a low capacita nce diode array. The use of three terminal differential gas discharge tubes provides superior common and differential mode protection against conducted transients versus the use of lower cost two terminal tubes. The second stage series resistance limits the power dissipation of the fast diode clamp array in the third stage. This allows time for the slower but higher power gas tubes to flash over. The diode array clamps the leading edge of fast transients to safe levels until the high power gas tubes turn on. This eliminates the damaging leading edge spike that single stage gas tube protectors let leak through. The diode array’s low capacitance assures that the protector will not degrade the high-speed signals. The RS-485 control line is connected to the protector via its screw terminal blocks. The AL-D15P series is designed to work with 1 half duplex RS-485 line.
L-com, Inc. 50 High St., West Mill, 3rd Floor, Suite #30 North Andover, MA 01845 www.L-com.com E-mail: sales@L-com.com Phone: 1-800-343-1455 Fax: 1-978-689-9484 © L-com, Inc. All Rights Reserved. L-com Global Connectivity and the L-com logo are registered marks. AC and DC Power Lines The AC and DC power lines are also protected using a 3- stage design. This provides superior protection from transients and surges. The first stage is comprised of a differential gas discharge tube. Stage two is a pair of suppression coils and the final stage is a 1500 Watt uni-polar Transient Voltage Suppression (TVS) Diode used on the AL-D15P DC models. For AL-D15P AC models, a Metal Oxide Varistor (MOV) is used. Power lines are connected to the protector via screw terminals. Weatherproof Resistant The compact weather resistant housing features a lockable hinged cover and holes are provided on the rear for mounting. The cable grommet may be adjusted to cable size and is removable. DC Version Shown
L-com, Inc. 50 High St., West Mill, 3rd Floor, Suite #30 North Andover, MA 01845 www.L-com.com E-mail: sales@L-com.com Phone: 1-800-343-1455 Fax: 1-978-689-9484 © L-com, Inc. All Rights Reserved. L-com Global Connectivity and the L-com logo are registered marks. Standard Models Models Application AL-D15P05DW RS-485 Control + 5VDC Power Lines AL-D15P12DW RS-485 Control + 12VDC Power Lines AL-D15P15DW RS-485 Control + 15VDC Power Lines AL-D15P24DW RS-485 Control + 24VDC Power Lines AL-D12P1228AW RS-485 Control + 12-28VAC Power Lines Specifications Electrical Specifications – RS-485 Connectors (2) Screw Terminal Blocks Stage 1 Clamping Voltage ± 90 Volts Stage 2 Resistance 3.3 Ohms Stage 3 Clamping Voltage ± 7.5 Volts Electrical Specifications – DC Power Models: AL-D15P05DW AL-D15P12DW AL-D15P15DW AL-D15P24DW Connectors (2) Screw Terminal Blocks Stage 1 Clamping Voltage ± 90 Volts Stage 2 Current Rating 1.5 Amps Stage 3 6.8 Volt TVS Diode 12 Volt TVS Diode 18 Volt TVS Diode 30 Volt TVS Diode Electrical Specifications – AC Power Model: AL-D15P1228AW Connectors (2) Screw Terminal Blocks Stage 1 Clamping Voltage ± 90 Volts Stage 2 Current Rating 1.5 Amps Stage 3 47 Volt Varistor
L-com, Inc. 50 High St., West Mill, 3rd Floor, Suite #30 North Andover, MA 01845 www.L-com.com E-mail: sales@L-com.com Phone: 1-800-343-1455 Fax: 1-978-689-9484 © L-com, Inc. All Rights Reserved. L-com Global Connectivity and the L-com logo are registered marks. Simplified Circuit Schematic – RS-485 Simplified Circuit Schematic – Power