Beckhoff EL1904 User Manual

Product description
EL190422 Version: 3.0.0
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 EL1904
Number of inputs 4
Status display 4 (one green LED per input)
Response time (read input/write to E-bus) typically: 4ms,
maximally: see fault reaction time
Fault reaction time ≤ watchdog time
Cable length between sensor and terminal unshielded max. 100m (0.75 or 1mm²)
shielded max. 100m (0.75 or 1mm²)
Output current of the clock outputs typically 10mA, max. 15mA
Input process image 6bytes
Output process image 6bytes
EL1904 supply voltage (PELV) 24V
DC
(–15%/+20%)
(A 10A fuse should be provided for the potential group)
Protection class III (by using a SELV/PELV power supply unit)
Overvoltage category II
Signal voltage "0" inputs
-3V ... 5V (EN61131-2, type 3) see chapter Characteristic curve
of the inputs [}24]
Signal voltage "1" inputs
11V ... 30V (EN61131-2, type 3) see chapter Characteristic
curve of the inputs [}24]
Current consumption of the module electronics at 24V (without
current consumption of sensors)
4 channels occupied: typically 12mA
0 channels occupied: typically 1.4mA
Current consumption via E-bus 4 channels occupied: approx. 200mA
Power dissipation of the terminal typically 1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)
up to SW 05
0°C to +55°C (see chapter Example configuration for
temperature measurement [}28])
Permissible ambient temperature (operation)
from SW 06 (CW 02/2014)
-25°C to +55°C (see chapter Example configuration for
temperature measurement [}28])
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 corresponds 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 pollution degree
according to EN60664-1
2
(see chapter Maintenance)
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 soiling of the
Bus Terminal
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 class IP20
Equipment type according to EN61010-2-201 Open equipment

Beckhoff EL1904 Specifications

General

Brand	Beckhoff
Model	EL1904
Category	Touch terminals
Language	English