Product description
EP1957-0022 and EP1957-222218 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 EP1957-0022 and EP1957-2222
Fieldbus EtherCAT
Number of inputs 8
Number of outputs 4
Input and output connections M12
Status display 12 (one green LED per input/output) + 5 diagnostic LEDs + 2 LEDs
for Us/Up + 2 LEDs for EtherCAT link/act
Response time
(read input/write to E-bus)
typical: 4ms (in default setting without local TwinSAFE logic),
maximum: see fault reaction time
Watchdog time adjustable from 2ms to 60s
Fault reaction time ≤ watchdog time
Cable length between sensor and EtherCAT Box Unshielded: max. 100m (0.75 or 1mm²)
Shielded: max. 100m (0.75 or 1mm²)
Output current of the clock outputs
(Input Power Mode parameter: diag test pulse)
typically 10mA
Output current of sensor supply
(Input Power Mode parameter: PowerMode A/B)
max. 250mA
Max. output current clock outputs/sensor supply in the event of
an error
max. 3A (the duration depends on the overtemperature-related
shutdown of the output driver)
Safe outputs max. 0.5A per channel
Diagnostic thresholds:
>4.7V -> high signal is detected
<1.0V -> low signal is detected
Input process image 7bytes
Output process image 7bytes
Supply voltage for the EP1957 24V
DC
(–15%/+20%)
Current consumption U
S
(wired with 8 potential-free contacts and 4 outputs)
12 channels occupied: typically 120mA
0 channels occupied: typically 100mA
(provide 4 A fuse)
Current consumption from U
P
(connected with 8 potential-free contacts and 4 actuators, without
load currents)
12 channels occupied: approx. 60mA
0 channels occupied: approx. 20mA
(provide 4 A fuse)
Power loss of the EtherCAT Box typically 4.7watts
Electrical isolation (between the channels) no
Electrical isolation (between the channels and EtherCAT) yes
Insulation voltage (between the channels and EtherCAT, under
common operating conditions)
Insulation tested with 500V
DC
Dimensions (WxHxD) 60(+0.5)mmx126(+0.5)mmx26.5mm
Housing material PBT+PET (Valox 855)
Sealing compound Polyurethane
Weight approx.315g
Permissible ambient temperature (operation) -25°C to +60°C
Permissible ambient temperature (transport/storage) -40°C to +85°C
Permissible air pressure (operation/storage/transport) 750hPa to 1100hPa
(this is equivalent to an altitude of approx. -690m to 2450m above
sea level assuming an international standard atmosphere)
Inadmissible operating conditions TwinSAFE EtherCAT Boxes must not be used under the following
conditions:
• under the influence of ionizing radiation (exceeding the natural
background radiation)
• in corrosive environments
EMC immunity/emission conforms to EN61000-6-2/ EN61000-6-4
Vibration/shock resistance conforms to EN60068-2-6/ EN60068-2-27
Shocks 15g with pulse duration 11ms in all three axes
Protection rating (when screwed together) IP67 (according to EN 60529)
Correct installation position variable