Servomotor terminal for resolver, 50 V DC, 2.8 A<sub>RMS</sub> EL7201
Power contact
+24 V
Power contact 0 V
excitation + (R1
Resolver sin + (S2
Resolver cos + (S1
Motor phase U 
Motor phase W 
Motor brake + 
Load voltage 50 V 
Load voltage 50 V 
excitation - (R2)
sin - (S4)
cos - (S3)
Motor phase V
Motor brake
Load voltage
Load voltage
Top view 
Contact assembly 
extended shock and vibration range

EL7201 | Servomotor terminal for resolver, 50 V DC, 2.8 ARMS

The EL7201 servomotor EtherCAT Terminal, with integrated resolver interface, offers high servo performance in a very compact design. The fast control technology, based on field-oriented 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.

Technical data EL7201
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 2.8 A (rms)
Performance increase Yes, through ZB8610 fan cartridge
output current with ZB8610 max. 4.5 ARMS (overload- and short-circuit-proof)
Peak current IN 5.7 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 (only 12 mm wide), system-integrated
Weight approx. 60 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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