Beckhoff EL9 Series Documentation page 59

The EL9540 system terminal contains an overvoltage filter for the 24 V field supply, the EL9550 for the 24 V
field and system supply. The filter protects the EtherCAT Terminals from line-bound surge voltages that can
occur due to high-energy, dynamic disturbances such as switching overvoltages at inductive consumers or
indirect lightning strikes at the supply lines.
In the EL9550-0012 variant, the current load is 10 A for both the field supply and the system supply. The
higher system supply is advantageous for the supply of Embedded PCs that have a higher current
consumption.
The EtherCAT Terminals EL9540 or EL9550 protect the terminal station from damage in particularly harsh
environments. The ship classification organisations require the use in shipbuilding applications and in the
onshore/offshore sector.
Technical data
Technical data
Function
Nominal voltage
Surge filter field supply
Surge filter system supply
Rated current
field supply
Rated current
system supply
Diagnostics
Reported to E-Bus
PE contact
Shield connection
Current consumption E-bus
Bit width in the process image
Connection to mounting rail
Electrical isolation
Renewed infeed
Connection facility to additional
power contact
Side by side mounting on Ether-
CAT Terminals with power con-
tact
Side by side mounting on Ether-
CAT Terminals without power
contact
Dimensions (B x H x T)
Configuration
Weight
Permissible ambient tempera-
ture range (during operation)
Permissible ambient tempera-
ture range (during storage)
Permissible relative humidity
Mounting [} 73]
Vibration/shock resistance
EMC resistance burst/ESD
Protect. class
Installation pos.
Approval
EL9xxx
EL9540
surge filter field supply
24 V (-15 %/+20 %)
yes
-
≤ 10 A
-
-
-
yes
-
-
0
-
500 V (E-bus/field potential)
yes
2
yes
yes
approx. 15 mm x 100 mm x 70 mm (width aligned: 12 mm)
no address- or configuration setting necessary
approx. 50 g
-25°C ... +60°C (extended temperature range)
-40°C ... +85°C
95%, no condensation
on 35 mm mounting rail conforms to EN 60715
conforms to EN 60068-2-6/EN 60068-2-27, see Installation instructions [} 76] for enhanced mechan-
ical load capacity
conforms to EN 61000-6-2/EN 61000-6-4
IP 20
variable, see chapter "Mounting of Passive Terminals [} 83]"
CE
ATEX [} 85]
cULus [} 86]
Version: 3.9
EL9550
surge filter system and field supply
yes
≤ 1.5 A (from hardware version
03)
-
1
-
CE CE
ATEX [} 85]
cULus [} 86]
IECEx
Product overview
EL9550-0012
≤ 10 A
59