Servomotor terminal for resolver, 50 V DC, 4.5 A<sub>RMS</sub> EL7211
Power contact
+24 V
Power contact 0 V
Res. excitation 
+(R1), -(R2
Res. sin +(S2), -(S4
Res. cos +(S1), -(S3
Motor phase U, V 
Motor phase W 
Motor brake +, GND 
Load voltage 50 V, 
Load voltage 50 V, 
Top view 
Contact assembly 
extended shock and vibration range

EL7211 | Servomotor terminal for resolver, 50 V DC, 4.5 ARMS

The EL7211 servomotor EtherCAT Terminal with integrated resolver interface offers high servo performance in a very compact design for motors from the AM8100 and AM3100 series up to 4.5 ARMS. The fast control technology, based on field-orientated current and PI speed control, supports fast and highly dynamic positioning tasks.

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.

Technical data EL7211
Number of channels 1 servomotor, resolver, motor brake
Connection method direct motor connection
Load type permanent-magnet synchronous motors
Nominal voltage 8…50 V DC
Output current IN 4.5 A (rms)
Performance increase
Peak current IN 9.0 A (rms) for 1 s
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 (+6 %/-10 %)
Output current motor brake max. 0.5 A
Current consumption power contacts typ. 50 mA + holding current motor brake
Current consumption E-bus typ. 120 mA
Special features compact and system-integrated
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
Approvals CE, UL
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