Beckhoff EL1918 User Manual

Product description
EL1918 and EL1918-220024 Version: 2.0.0
4.3 Technical data
The current certificates of all TwinSAFE products with the underlying standards and directives can be found
at https://www.beckhoff.com/en-en/support/download-finder/certificates-approvals/.
Product designation EL1918 and EL1918-2200
Number of inputs 8
Status display 12 (one green LED per input + 4 DIAG LEDs)
Response time (read input/write to E-bus) typically: 4ms,
maximum: see fault reaction time
Fault reaction time ≤ watchdog time
Cable length between sensor and terminal unshielded max. 100m (with 0.75 or 1mm²)
shielded max. 100m (with 0.75 or 1mm²)
Output current of the clock outputs typically 3mA, max. 6.5mA
Input process image 7bytes
Output process image 6bytes
Supply voltage of the EL1918 (PELV) 24V
DC
(–15%/+20%)
Signal voltage "0" inputs
-3V to 5V (EN61131-2, type 3) see chapter Characteristic curve
of the inputs [}26]
Signal voltage "1" inputs
11V to 30 V (EN61131-2, type 3) see chapter Characteristic
curve of the inputs [}26]
Current consumption of the module electronics at 24V (without
current consumption of sensors)
8 channels occupied: typically 29.6mA (@28.8V
DC
)
0 channels occupied: typically 2.27mA (@28.8V
DC
)
Current consumption via E-bus 8 channels occupied: approx. 165mA
Power loss of the terminal typically 1.6W
Electrical isolation (between the channels) No
Electrical isolation (between the channels and the E-bus) Yes
Insulation voltage (between the channels and the E-bus, under
common operating conditions)
Insulation tested with 500V
DC
Dimensions (WxHxD) 12 mm x 100 mm x 68 mm
Weight approx.50g
Permissible ambient temperature (operation)
-25°C to +55°C (observe the chapter Temperature measurement
[}30])
Permissible ambient temperature (transport/storage) -40°C to +70°C
Permissible air humidity 5% to 95%, non-condensing
Permissible air pressure (operation/storage/transport) 750hPa to 1100hPa
(this is equivalent to an altitude of approx. -690m to 2450m
above sea level assuming an international standard atmosphere)
Climate category according to EN60721-3-3 3K3
(the deviation from 3K3 is possible only with optimal
environmental conditions and also applies only to the technical
data which are specified differently in this documentation)
Permissible degree of pollution
according to EN 60664-1
Degree of pollution 2
(please note the chapter Maintenance [}54])
Inadmissible operating conditions TwinSAFE Terminals must not be used under the following
operating conditions:
• under the influence of ionizing radiation (exceeding the
natural background radiation)
• in corrosive environments
• in an environment that leads to unacceptable contamination
of the TwinSAFE component
EMC immunity/emission conforms to EN61000-6-2/ EN61000-6-4
Vibration/shock resistance conforms to EN60068-2-6/ EN60068-2-27
Shocks 15g with pulse duration 11ms in all three axes
Protection rating IP20
Permitted operating environment In the control cabinet or terminal box, with minimum protection
rating IP54 according to IEC60529
Correct installation position
see chapter Installation position and minimum distances [}29]
Approvals CE, TÜV SÜD

Beckhoff EL1918 Specifications

General

Brand	Beckhoff
Model	EL1918
Category	Touch terminals
Language	English