ePMP PoE Powering Primer

This article is specific to powering ePMP modules with a Power over Ethernet (PoE) power injector. ePMP_power_supply.png

The ePMP power supply is an indoor unit that is connected to the ePMP module and network terminating equipment using Cat5e cable with RJ45 connectors. It is also plugged into an AC or DC power supply so that it can inject Power over Ethernet (PoE) into the module.

For powering ePMP modules, Cambium Networks has tested and recommends using the following 30 V PoE injectors:

Cambium description

Cambium part number

Pinout

ePMP Power Supply for GPS Radio - no cord

N000900L001A

Pins 7,8: +30 V

Pins 4,5:  RETURN

(Cambium PoE)

ePMP Power Supply for non-GPS Radio - no cord

N000900L002A

Ensure that the voltage applied to the device meets the minimum range listed in the table below after taking into account cable lengths or any other type of voltage loss resident in your deployment.

ePMP module basic powering specifications:

ePMP Device

ePMP Device PoE Input Protocol

Input Voltage Range

ePMP Connectorized with GPS Sync

Compatible with:

Cambium PoE pinouts (V+ = 7 & 8, Return = 4 & 5)

and

802.3af PoE pinouts (V+ = 4 & 5, Return = 7 & 8)

23 – 56 V

ePMP Connectorized

Compatible with

Cambium PoE pinouts (V+ = 7 & 8, Return = 4 & 5)

10 – 30 V

ePMP Integrated

Compatible with

Cambium PoE pinouts (V+ = 7 & 8, Return = 4 & 5)

10 – 30 V

Force 110 PTP

Compatible with

Cambium PoE pinouts (V+ = 7 & 8, Return = 4 & 5)

and

802.3af PoE pinouts (V+ = 4 & 5, Return = 7 & 8)

23 – 56 V

Force 110

Compatible with

Cambium PoE pinouts (V+ = 7 & 8, Return = 4 & 5)

10 – 30 V

Force 180

Compatible with

Cambium PoE pinouts (V+ = 7 & 8, Return = 4 & 5)

and

Proprietary PoE pinouts (V+ = 4 & 5, Return = 7 & 8)

10 – 30 V

Force 200

Compatible with

Cambium PoE pinouts (V+ = 7 & 8, Return = 4 & 5)

and

Proprietary PoE pinouts (V+ = 4 & 5, Return = 7 & 8)

10 – 30 V

For each power supply, the maximum permitted drop cable length is specified in the table below:

Power supply drop cable length restrictions

Part number

Description

Maximum cable length (*1)

N000900L001A

Power Supply for Radio with Gigabit Ethernet (no cord)

330 feet (100m)

N000900L002A

Power Supply for Radio with 100Mbit Ethernet (no cord)

330 feet (100m)

(*1) Maximum length of Ethernet cable from ePMP device  to power supply

For copper connections from the device to the power supply, use Cat5e cable that is shielded with copper-plated steel.

Caution

Always use Cat5e cable that is shielded with copper-plated steel. Alternative types of Ethernet cables are not supported by Cambium Networks.

For information about powering ePMP by a Cambium Networks Cluster Management Module (CMM), see:

http://community.cambiumnetworks.com/t5/ePMP-Installation/Powering-ePMP-via-CMM/m-p/48920#U48920

For more information about powering ePMP in sub-freezing temperatures, see:

http://community.cambiumnetworks.com/t5/ePMP-Installation/ePMP-Powering-at-Sub-freezing-Temperatures/m-p/48918#U48918

For ePMP installation sites requiring power supplies operating with an input voltage of 48 V DC please see the following options:

http://community.cambiumnetworks.com/t5/ePMP-Installation/48-V-DC-Input-Voltage-PoE-Options/td-p/40437

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