Servomotor terminal with OCT and STO, 48&nbsp;V&nbsp;DC, 7…8&nbsp;A (I<sub>rms</sub>), operation with ZB8610 EL7221-9014
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 48 V, 
Load voltage 48 V, 
Top view 
Contact assembly 

EL7221-9014 | Servomotor terminal with OCT and STO, 48 V DC, 7…8 A (Irms), operation with ZB8610

The EL7221-9014 servomotor EtherCAT Terminal with integrated One Cable Technology (OCT) offers powerful servo performance in a very compact design for motors from the AM8100 series up to 8 A (Irms). OCT 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 by the servo terminal to configure the motor parameters automatically. Thus, commissioning of the motors as well as cabling are minimised. The high-performance control technology supports fast and highly dynamic positioning tasks. Monitoring of numerous integrated parameters offers maximum operational reliability. The specified output power is attained in operation with the ZB8610 fan cartridge. For operation without a fan cartridge, the EL7211-9014 is recommended. The EL7221-9014 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 EL7221-9014
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…48 V DC (external)
Performance increase
Output current with ZB8610 (rms) 7.0 A up to 55 °C, 8.0 A up to 45 °C operating temperature
Peak current with ZB8610 (rms) max. 16.0 A for 1 s up to 55 °C operating temperature
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
Realisation STO hard-wired via safe output
Special features designed for operation with the ZB8610 fan cartridge, order fan cartridge separately
Safe stop functions Safe Torque Off (STO), Safe Stop 1 (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
Approvals/markings CE, UL, TÜV SÜD
ZKxxx-xxxx-xxxx supply cables for compact Drive Technology
ZB85xx shield busbar with mounting rail holder, shield busbar clamps
Related products  
EL7211-9014 EtherCAT servo terminal for OCT, with STO input, 50 V DC, Irms = 4.5 A
EP7211-0034 EtherCAT Box, industrial housing, servomotor module with OCT suitable for STO applications, 48 V DC, 4.5 A (Irms)