Servomotor terminal with OCT and STO, 50 V DC, 4.5 A (I<sub>rms</sub>) EL7211-9014
Power contact
+24 V
Power contact 0 V
Feedback +,- 
Digital Input 1, 2 
Power c. +24 V, 0 V 
Motor phase U, V 
Motor phaseW, STO 
Motor brake +, GND 
Load voltage 50 V, 
Load voltage 50 V, 
Top view 
Contact assembly 

EL7211-9014 | Servomotor terminal with OCT and STO, 50 V DC, 4.5 A (Irms)

The EL7211-9014 servomotor EtherCAT Terminal with integrated One Cable Technology (OCT) offers high servo performance in a very compact design for motors from the AM8100 up to 4.5 A (Irms). The One Cable Technology combines a motor cable and an absolute feedback system in a single cable. The integrated electronic type plate of the AM81xx motors can be read in automatically by the servo terminal to configure the motor parameters automatically. Thus, wiring and commissioning expenditure are minimised.

The fast control technology, based on field-orientated current and PI speed control, supports fast and highly dynamic positioning tasks. The monitoring of numerous parameters, such as overvoltage and undervoltage, overcurrent, terminal temperature or motor load via the calculation of a I²T model, offers maximum operational reliability. EtherCAT, as a high-performance system communication, and CAN-over-EtherCAT (CoE), as the application layer, enable ideal interfacing with PC-based control technology. The latest power semiconductors guarantee minimum power loss and enable feedback into the DC link when braking. 16 LEDs indicate status, warning and error messages as well as possibly active limitations.

The EL7211-9014 enables the user to implement the safety function STO (Safe Torque Off) that corresponds to a Cat 3, PL d safety level according to EN ISO 13849-1:2015.

Technical data EL7211-9014
Technology compact Drive Technology
Load type permanent magnet-excited three-phase synchronous motor
Number of channels 1
Number of outputs 1 x servomotor, 1 x motor brake
Number of inputs 2 x end position, 1 x feedback, 1 x STO
Connection method direct motor connection with OCT
Supply voltage electronics 24 V DC (via power contacts)
Supply voltage power 8…50 V DC (external)
Output current (rms) 4.5 A
Peak current (rms) max. 9.0 A for 1 s
Performance increase
Output current with ZB8610 (rms)
Peak current with ZB8610 (rms)
Frequency range 0…599 Hz
PWM clock frequency 16 kHz
Current controller frequency 32 kHz
Rated speed controller frequency 16 kHz
Output voltage motor brake 24 V DC
Output current motor brake max. 0.5 A
Current consumption power contacts typ. 100 mA + holding current motor brake
Current consumption E-bus typ. 120 mA
Distributed clocks yes
Special features compact and system-integrated, absolute feedback, One Cable Technology (OCT), plug and play, STO (Safe Torque Off), SS1
Electrical isolation 500 V (E-bus/field potential)
Weight approx. 95 g
Operating/storage temperature 0…+55 °C/-25…+85 °C
Relative humidity 95 %, no condensation
Vibration/shock resistance conforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4
Protect. class/installation pos. IP 20/see documentation
Pluggable wiring
Approvals/markings CE, UL, TÜV SÜD
EL1904 4-channel digital input terminal, TwinSAFE, 24 V DC
EL2904 4-channel digital output terminal, TwinSAFE, 24 V DC, 0.5 A
EL6910 TwinSAFE Logic, PROFIsafe master and slave support
EL9576 brake chopper terminal, 72 V, 155 µF
AM811x servomotor 0.20…0.52 Nm for servo I/Os (EL72xx, EP72xx)
AM812x servomotor 0.50…0.80 Nm for servo I/Os (EL72xx, EP72xx)
AM813x servomotor 1.35…2.37 Nm for servo I/Os (EL72xx, EP72xx)
ZB85xx shield busbar with mounting rail holder, shield busbar clamps
ZK4701-04x1-2xxx supply cables for compact Drive Technology
Related products  
EL7201-9014 EtherCAT servo terminal for OCT, with STO input, 50 V DC, Irms = 2.8 A
EP7211-0034 EtherCAT Box, industrial housing, servomotor module with OCT and STO, 50 V DC, 4.5 A (Irms)