Beckhoff EL2904 User Manual

Product description
EL290422 Version: 3.2.2
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 EL2904
Number of outputs 4
Status display 4 (one green LED per output)
Fault reaction time ≤ watchdog times
Output current per channel max. 500mA, min. 20mA with Current Measurement Active parameter
enabled
Utilization category according to EN 60947-5-1 DC-13
Actuators When selecting actuators please ensure that the EL2904 test pulses do
not lead to actuator switching.
Cable length between actuator and terminal unshielded max. 100m
shielded max. 100m
Wire cross-section min. 0.75mm
2
Input process image 6bytes
Output process image 6bytes
EL2904 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
Current consumption via E-bus approx. 221mA
Power loss of the terminal typically 2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) 24mm x 100mm x 68mm
Weight approx.100g
Permissible ambient temperature (operation)
up to SW 03
0°C ... +55°C
(see chapter Example configuration for temperature measurement)
Permissible ambient temperature (operation)
from SW 04 (CW 02/2014)
-25°C ... +55°C
(see chapter Example configuration for temperature measurement)
Permissible ambient temperature (transport/storage) -40°C ... +70°C
Permissible air humidity 5% to 95%, non-condensing
Permissible air pressure (operation/storage/transport) 750hPa ... 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
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
1
• 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
Corrosive gas test According to DINEN 60068-2-60:2016-06, method 4 with increased
concentrations according to ANSI/ISA 71.04:2013 Level GX Group A
• Test duration: 21 days
• Hydrogen sulfide: (50 ± 5) ppb
• Nitrogen dioxide: (1250 ± 20) ppb
• Chlorine: (10 ± 5) ppb

Beckhoff EL2904 Specifications

General

Brand	Beckhoff
Model	EL2904
Category	Touch terminals
Language	English