EN
POE.8AT-DC1 Installation Manual
Product Description
The POE.8AT-DC1 is a DIN-rail mountable injector, which provides power for Power over Ethernet
(PoE) applications. It injects power to 8 individual PoE channels (IEEE 802.3AT) via RJ45 Ethernet
ports. The device can supply powered devices (PD) of type 1 and type 2.
Intended Use
This device is designed for installation in an enclosure and is intended for commercial use, such as in
industrial control, process control, monitoring and measurement equipment or the like. Do not use this
device in equipment where malfunction may cause severe personal injury or threaten human life.
Installation Instructions
Install device in an enclosure providing protection against electrical, mechanical and fire hazards.
Install the device onto a DIN-rail according to EN 60715 with the RJ45 input connectors on the bottom
of the device.
Make sure that the wiring is correct by following all local and national codes. Use appropriate copper
cables that are suitable for the operating temperature of the device. Ensure that all strands of a
stranded wire enter the terminal connection. Unused screw terminals should be securely tightened.
Use shielded twisted pair Ethernet cables specified for usage in IEEE 802.3at.
The device is designed for pollution degree 2 areas in controlled environments. No condensation or
frost is allowed.
The enclosure of the device provides a degree of protection of IP20. The enclosure does not provide
protection against spilled liquids.
The device is designed as “Class of Protection III” equipment according to IEC 61140.
The device can be supplied from batteries or similar DC sources. The voltage between the supply
terminals and ground must not exceed 60Vdc continuously.
The device must be supplied from a PELV or SELV source or an "Isolated Secondary Circuit" in order
to maintain a SELV or PELV output. A minimum input voltage of 51Vdc is required to fulfill the IEEE
802.3AT requirements with 30W (PD type 2) per channel. If the voltage is lower than 51V, only
devices with a power requirement of 15W (PD type 1) can be supplied.
Check for correct input polarity. The device will not operate when the voltage is reversed.
A disconnecting means shall be provided for the input of the device.
There is no input inrush current limitation included. The internal input capacitor of typically 100µF will
be charged without any specific limitation means when connected to the supplying system.
Use an external circuit breaker with 6A B- or 4A C-Characteristic for the supply voltage input if the
current of the supplying source is higher than 7A.
The device is designed for convection cooling and does not require an external fan. Do not obstruct
airflow and do not cover ventilation grid!
The device is designed for altitudes up to 2000m (6560ft).
Keep the following minimum installation clearances: 40mm on top, 20mm on the bottom, 5mm left and
right side. Increase the 5mm to 15mm in case the adjacent device is a heat source. When the device
is permanently loaded with less than 50%, the 5mm can be reduced to zero.
The maximum surrounding air temperature is +85°C (+185°F). The operational temperature is the
same as the ambient or surrounding air temperature and is defined 2cm below the device.
The device is designed to operate in areas between 5% and 95% relative humidity.
Do not plug or unplug the device as long as input voltage is present.
Do not unplug the connectors more often than 20 times in total.
Functional Description
The output is electronically protected against no-load, overload and short circuit and can supply any
kind of loads according to IEEE 802.3at.
Do not apply return voltages from the load to the output terminals higher than 56V.
The device is equipped with an over-current protection for each PoE output channel. If the current
exceeds the output current limitation value, the affected PoE channel will be switched off. Unplug the
affected channel for at least 2s. If the over-current is cleared, the device will operate normally again.
The device is equipped with an over-temperature protection. In case of a high temperature, the output
shuts down and starts automatically again after cooling off.
The device detects connected PoE loads automatically and will not power connected non-PoE devices
according to IEEE 802.3at.
Technical Data
All values are typical figures specified at 56Vdc supply voltage, 8x 30W
output load, 25°C ambient temperature and after a 5 minutes run-in time
unless otherwise noted.
Supply voltage
DC 48V
Nominal
Supply voltage range
48 – 56Vdc
For PD type 2 (30W /
channel) , the input
voltage must be above
51Vdc
RJ45 Output channels
8x 30W
Below +60°C ambient
8x 22.5W
At +85°C ambient
Derate linearly b60°C and +85°C
Output current limitation
0.63A
Below +60°C ambient
0.47A At
+85°C
ambient
Power losses
4.2W
Temperature range
-45 to +85°C
Max. wire size (litz wire)
1.5mm²
Max. wire size with ferrules 1.5mm²
Wire size AWG
AWG 26-14
Maximum wire diameter
1.8mm
Wire stripping length
6mm / 0.25inch
Size (wxhxd)
39x128x117mm Without
DIN-rail
Weight
360g / 0.79lb
Functional Diagram
Reverse Input
Polarity
Protection
+
-
Ch1
Ch2
Ch3
Ch8
PoE
Power Injector
PoE
Output
Channels
Ch1
Ch2
Ch3
Ch8
PoE
Input
Channels
..
.
..
.
..
.
..
.
Power
Conditionng
..
.
Supply
Voltage
Temperature Range
Allowed output power
Ambient temperature
0A
-45
8x 30W
0
+60
+85°C
8x 22.5W