EP7211-0034 | Servomotor module with OCT suitable for STO applications, 48&nbsp;V&nbsp;DC, 4.5&nbsp;A&nbsp;(I<sub>rms</sub>)
OCT motor cable
connection socket 
Labelling areas
Signal status display
M12 HWE connection
M12 HWE connection
M12 I/O
M12 I/O
Power supply
status display:
Box supply (US
Auxiliary voltage (UP
A | U
B | W
C | V
1 | +Brake
2 | -Brake
3 | +OCT
4 | -OCT
5 | n.c.
1 | Tx+
2 | Rx+
3 | Rx-
4 | Tx-
1 | GNDP
2 | GNDS
3 | FE
4 | +24 V DC US
5 | +50 V DC UP
Power OUT
Power IN
signal input 
signal output 
extended temperature range

EP7211-0034 | Servomotor module with OCT suitable for STO applications, 48 V DC, 4.5 A (Irms)

The EP7211-0034 servomotor EtherCAT Box with integrated One Cable Technology (OCT) offers high servo performance in a very compact design for AM8100 series motors with up to 4.5 A (Irms). The One Cable Technology combines motor cable and absolute feedback system in a single cable. The integrated electronic identification plate of the AM81xx motors can be read in automatically by the servo box to configure the motor parameters. In this way, wiring and commissioning requirements are simplified.

The high-performance control technology supports fast and highly dynamic positioning tasks, while numerous monitoring functions offer maximum operational reliability. EtherCAT as a high-performance system communication enables ideal interfacing with PC-based control technology. LEDs indicate status, warning and error messages as well as possibly active limitations. Two integrated digital inputs enable the connection of limit switches.

The STO function according to EN 61800-5-2 can be implemented with the aid of the non-reactive HWE input according to a safety level Cat. 3, PL d according to DIN EN ISO 13849-1:2015 (see document “EP7211-0034 TwinSAFE application example”).

Technical data EP7211-0034
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 power 8…48 V DC (external)
Output current (rms) 4.5 A
Peak current (rms) max. 9.0 A 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
Output current motor brake max. 0.5 A
Current consumption from US 120 mA
Distributed clocks yes
Realisation STO hard-wired via safe output
Special features compact and system-integrated, absolute feedback, One Cable Technology (OCT), plug and play, STO (Safe Torque Off)
Safe stop functions Safe Torque Off (STO), Safe Stop 1 (SS1)
Electrical isolation 500 V
Weight approx. 440 g
Operating/storage temperature -25…+60 °C/-40…+85 °C
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 65/66/67 (conforms to EN 60529)/variable
Approvals/markings CE, UL, TÜV SÜD
ZK1090-3xxx-xxxx Cables for EtherCAT signal in- and -output
ZK2030-xxxx-xxxx, ZK2031-xxxx-xxxx Cables for 7/8" power supply
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)
AM814x servomotor 2.40 Nm for servo I/Os (EL72xx, EP72xx)
ZK2000-5xxx/71xx-xxxx Sensor cable 5-wire unshielded/shielded
ZKxxx-xxxx-xxxx supply cables for compact Drive Technology