EN
SLA8.300 Installation Manual
Product Description
The SLA8.300 is a DIN-rail mountable power supply for three-phase mains systems, which provides
network power for the AS-Interface
®
system. The AS-Interface
®
system is a field bus technology,
where power and data are provided by the same single two-conductor wire. Therefore, special power
supplies with an integrated data-decoupling circuit are required to prevent the modulated signal
voltage on the AS-Interface
®
bus from being corrupted.
Intended Use
This device is designed for installation in an enclosure and is intended for commercial use to supply
power to AS-Interface
®
network systems.
Do not use this device in equipment where malfunction may cause severe personal injury or threaten
human life.
When operating without AS-Interface structure (e.g. in a laboratory test), connect a 470
μ
F/35V
capacitor between AS-Int and AS-Interface – terminals to avoid output voltage oscillations.
Without additional measures to reduce the radiated emission, the device is not unconditionally suitable
to be used in residential, commercial and light-industrial environments. No additional measures are
necessary for use in industrial environments.
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 input terminals 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 designed for a minimum operating temperature of 60°C for ambient temperatures up to
+45°C, 75°C for ambient temperatures up to +60°C and 90°C for ambient temperatures up to +70°C.
Ensure that all strands of a stranded wire enter the terminal connection. Unused screw terminals
should be securely tightened.
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 housing does not provide
protection against spilled liquids.
The isolation of the device is designed to withstand impulse voltages of overvoltage category II
according to IEC 60664-1.
The device is designed as “Class of Protection I” equipment according to IEC 61140. Do not use
without a proper PE (Protective Earth) connection.
The device is suitable to be supplied from TN, TT and IT mains networks. The continuous voltage
between the input terminals and the PE potential must not exceed 300Vac.
A disconnecting means shall be provided for the input of the device.
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 device is designed, tested and approved for branch circuits up to 20A without additional protection
device. If an external fuse is utilized, do not use circuit breakers smaller than 10A B- or 4A C-
Characteristic to avoid a nuisance tripping of the circuit breaker.
The maximum surrounding air temperature is +70°C (+158°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 10% and 90% relative humidity.
Functional Description
The output is electronically protected against no-load, overload and short circuit and can supply any
kind of loads, including inductive and capacitive loads.
The green DC-OK LED reports a nominal output voltage of a running device. The LED is off as soon
as the unit is in overload mode.
Do not parallel devices for higher output currents.
Do not connect outputs of devices in a series connection for higher output voltages.
In case of an internal defect, a redundant circuit limits the maximum output voltage to 50V. The output
shuts down and automatically attempts to restart.
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 is equipped with an "IR addressing mode" feature, which is selectable via jumper on the
front of the unit. The addressing mode interrupts the data communication on the yellow AS-Interface
cable. Participants with an infrared interface can then quickly be assigned a new ID address by means
of an infrared programming unit without the need to disconnect them from the AS-Interface cable.
Afterwards, the "Communication Mode" can be selected again to restart the data communication. The
red LED reports an active IR-mode and a disabled communication on the yellow AS-Interface cable.
In an overload, short-circuit or high temperature condition, the output switches permanently off after 2
to 5 seconds and thus protects the relatively thin AS-Interface cable and the attached components.
Triggering of this “Fuse-Mode” is indicated by the flashing red LED. System restart requires the
intentional activation of a reset button on the front side of the unit. Thus, an accidental restart is
prevented and the slaves are protected against damage. Alternatively, disconnecting the mains
voltage is also possible.
Technical Data
All values are typical figures specified at 3x 400Vac 50Hz input voltage,
symmetrical phase voltages, 30.6V 8A output load, 25°C ambient
temperature and after a 5 minutes run-in time unless otherwise noted.
Output voltage
DC 30.6V
Nominal
Adjustment range
Not adjustable
Factory setting 30.6V
Output current
8A
Below +60°C ambient
6A At
+70°C
ambient
Derate linearly b60°C and +70°C
For use on AS-Interface
®
networks only
Current limitation
>8.4A
Input voltage AC
3AC 400-500V
±15%
Mains frequency
50 – 60Hz
±6%
Input current AC
0.74 / 0.62A
At 3x400 / 3x480Vac
Power factor
0.52 / 0.52
At 3x400 / 3x480Va
Input inrush current
4 / 4A pk
Temperature
independent, cold start
Efficiency
91.5 / 91.6%
At 3x400 / 3x480Va
Power losses
22.5 / 22.0W
At 3x400 / 3x480Va
Hold-up time
30 / 50ms
At 3x400 / 3x480Va
Temperature range
-10 to +70°C
Max. wire size (litz wire)
4mm² Power
terminals
Wire size AWG
AWG 20-10
Power terminals
Max. wire diameter
2.8mm Power
terminals
Wire stripping length
7mm / 0.28inch
Power terminals
Tightening torque
1Nm / 9lb.inch
Power terminals
Size
(wxhxd)
129x124x117mm Without
DIN-rail
Weight
1160g / 2.58lb
Functional Diagram
Input
Fuse
&
Input
Filter
L1
Output
Overvoltage
Protection
Input
Rectifier
&
Inrush
Limiter
AS-i +
Output
Filter
AS-i-ok
(green)
Power
Converter
Shield
Communication/
IR Mode
AS-i
Decoupling
Unit
IR Mode
(red)
AS-i +
AS-i -
AS-i -
Temperature
Shut-down
Reset
Overload
(red)
Outputpower
Manager
(Fuse Mode)
L2
L3
Output Characteristic
Output voltage
16A
Output current
15V
0V
2A
4A
6A
8A
0A
30.6V
10A 12A
14A
18A
Temperature Range
Allowed output current
Ambient temperature
0A
-10
8A
+60
+70°C
6A
A: continuous
B: short term (max. 60s)
A
B
