PoE Ethernet Switch ES1-AC

Appearance and purpose of the device

Ethernet switch JetHome ES1-AC, designed for use in systems home automation and serves to connect devices to a local network (controllers) having an Ethernet interface and supporting the power supply function with using Passive PoE technology. Execution in DIN rail housing allows you to conveniently place the switch in the electrical panel next to others controllers.

Assignment of connectors

  • "ETHERNET 1" - "ETHERNET 5" - designed to connect to the switch other devices using Ethernet technology. At the same time, the port "ETHERNET 1" ("POE IN") can be used to power the switch with using Passive PoE technology, and the ports "ETHERNET 2" - "ETHERNET 5" ("POE OUT") - can be used to power external devices, connected to the switch using Passive PoE technology.
  • Terminal "DC OUT" - designed to power external devices. day off voltage at the terminal - 24V when the switch is powered from the AC mains current, or equal to the supply voltage at the input "POE-IN" when powered switch from the "POE IN" input.
  • Terminal "POWER OK" - "dry contacts" of the relay. Closed when power is on switch outputs "POE OUT" and "DC OUT", open when exceeding total maximum load current.
  • Terminal "BATTERY LOW" - closes when the voltage on the battery is less than 11V.
  • Terminal "BATTERY 12V" - used to connect an external lead battery.
  • Terminal "AC IN" - used to connect an external source of alternating current voltage from 110V to 240V.

Dimensions and weight

  • Housing dimensions: 130 x 75 x 57 mm. Case width 75mm is about 4.3 standard modules for a DIN rail (17.5mm);
  • Ability to mount the case on a 35mm DIN rail;
  • Weight: 250 g

Operating conditions

  • Ambient temperature: 0..+40 С;
  • Relative air humidity up to 80% without moisture condensation;
  • Closed explosion-proof rooms without aggressive vapors and gases.

Description

Ethernet Switch

The main function of the device is to combine several nodes (devices) into within one segment of the Ethernet network with a speed of up to 100Mbps. AT The physical layer can be a Category 5 cable with two or four twisted pairs. 8P8C connectors are used to connect the cable (RJ45). Pins 1, 2 and 3, 6 of the connector are used for data transmission.

Ethernet switch specifications:

  • RTL8305NB 5-port controller;
  • support for IEEE 802.3/802.3u standards with auto-sensing transfer rates 10/100 Mbps;
  • support for full duplex communication in accordance with the IEEE 802.3x standard.

WARNING! Only devices that can be connected to the switch supporting power supply using PoE technology. Do not connect to ports "ETHERNET 2" - "ETHERNET 5" computers, laptops and other household devices to avoid damaging them.

Food

The switch has a built-in AC/DC voltage converter with input AC voltage from 110V to 240V and output voltage DC 24V. The output power of the built-in converter is 30W. Power is supplied to the AC IN terminal of the switch.

Passive PoE In

The switch can be powered from an external DC source via Passive PoE technology through the "ETHERNET 1" / "POE IN" port. For nutrition pins 4, 5 (+) and 7, 8 (-) of the “ETHERNET 1” / “POE IN” port are used. Rated supply voltage range - from 12V to 48V, maximum supply voltage range - from 12V to 56V.

The built-in AC/DC voltage converter has higher priority even when connecting the controller to AC power, powering the controller and external devices will be carried out from the built-in 24V converter regardless of whether voltage is applied to the “POE IN” input.

Passive PoE Out

The switch can power up to 4 devices connected to the "ETHERNET 2" ports - "ETHERNET 5" ("POE OUT”) using Passive PoE technology: Power pins 4, 5 (+) and 7, 8 (-) of the ports are used.

When the switch is powered by AC power, the output voltage at ports "POE OUT" is 24V. Maximum total current delivered consumers connected to the "POE OUT" ports and the "DC OUT" terminal while is 1.3A (see p. Overload protection).

When the switch is powered from the “ETHERNET 1” (“POE IN”) port, the output voltage on the ports "POE OUT" will correspond to the input voltage "POE IN", and maximum total current given to consumers connected to the ports "POE OUT" in this case is 2.5A (see p. Overload protection).

Overload Protection

The switch has the function of protection against exceeding the maximum output current, given to consumers:

  • When powered from the AC mains through the built-in converter AC / DC maximum current given to consumers is 1.3A. At exceeding the maximum current consumption, the device turns off;
  • When powered from the PoE-In port, the maximum current supplied to consumers is depends on the external power supply used, but may not exceed 2.5A. When the maximum current consumption is exceeded, external consumers powered by the switch are switched off. At the same time, it lights up the "POWER OVERLOAD" indicator on the front panel of the switch, as well as the contacts of the relay “POWER OK” connected to the external terminal are opened.

Power backup

The switch has a power backup function using an external 12V battery. For redundant power can be used lead batteries with a capacity of 1.2 Ah. Battery connected to a dedicated controller terminal "BATTERY 12V". When missing external supply voltage, power supply to the switch and connected to it devices will be powered by a battery with an output supply voltage 12V.

The switch has a built-in charger that the connected battery is being charged. Depending on the capacity of the battery used, you can set the maximum charging current of the charger. The maximum charging current is set jumper (jumper) on the charger board and can be installed to one of three values:

  • 0.3A
  • 0.6A
  • 1A

By default, the jumper is set to 0.3A. To change the value maximum charging current, you must open the switch case and rearrange the jumper (jumper) to the appropriate position (see marking on the charger board).

The switch has a battery monitoring function. At low voltage external battery (11V or less), the red indicator "BATTERY LOW" on the front panel of the switch and the "BATTERY LOW" relay contacts are closed, brought to the external terminal.

To protect the battery from deep discharge when the voltage on it is 10.5V or less the battery is switched off. The battery is connected after charging up to 12V.

WARNING! The battery is charged only from the built-in switch AC/DC converter when the switch is powered by AC power. When the switch is powered from the POE IN input, the battery charge is not produced. Therefore, in order to use the power backup function battery, it is recommended to power the controller from the AC mains. current. For battery operation, external devices powered by switch must support the supply voltage range from 10V.

Indication

The switch has the following LEDs that display the status of the switch:

Front panel:

  • POWER LED: Lights up green when the switch is powered and red when the total maximum output current is exceeded, consumed by external devices powered by the switch;
  • "BATTERY LOW" - low battery indicator. Lights up red when the battery voltage is less than 11V.

On Ethernet connectors:

  • Green indicator - indication of the connection of an external device via Ethernet technologies;
  • Orange indicator: on the "POE OUT" ports indicates the presence output supply voltage, on the "POE IN" port - testifies to powering the switch from the "POE IN" port.

Relay

The switch has two "dry contact" relay outputs, redundant indicators on the front panel of the switch:

  • Terminal "POWER OK" - closed when there is power at the outputs of the switch "POE OUT" and "DC OUT", open when the total maximum load current.
  • Terminal "BATTERY LOW" - closes when the voltage on the battery is less than 11V.

Maximum switching current - 1A.

Installation

The switch can be installed in an electrical cabinet or other the location where the switch must be protected from moisture, dirt and foreign objects, as well as the absence of vibration. For better cooling of the internal elements of the switch switch chassis must be installed in a vertical position.

To install the switch:

  • Make sure you have enough space to install the switch and wire laying;
  • Mount the switch securely on a DIN rail or vertical surface with screws.

To remove the switch from the DIN rail:

  • Insert the tip of a screwdriver into the latch eye.
  • Push the latch down.
  • Move the switch away from the DIN rail.

Connection recommendations

To ensure the reliability of electrical connections, it is recommended use copper stranded cables. Cable ends must be stripped then tin them or use cable lugs. Cable cores should be stripped so that their bare ends, after connecting to the switch did not protrude beyond the terminal block.

General requirements for connection lines:

  • during cabling, Ethernet lines should be allocated, connecting the switch with other devices, into independent routes, by placing them separately from power cables, as well as from cables that create high-frequency and impulse interference;
  • it is recommended to install network filters in the power line of the switch interference.