SME20/SME25 Sensor Modules External Siemens

Обзор



SME20/SME25 Sensor Module External

SME20/SME25 Sensor Modules External are encoder evaluation units for machine encoders (direct measuring systems).
The devices are designed with IP67 degree of protection. This means that the units can be installed outside the control cabinet near the machine encoder.

The following encoder signals can be evaluated:

  • Incremental encoder sin/cos 1 Vpp without rotor position track (C and D tracks)
  • Absolute encoder EnDat 2.1
  • SSI absolute encoder 1) with incremental signals sin/cos 1 Vpp (firmware V2.4 and later)

Using adapter cable 6FX8002‑2CA88‑..., it is possible to connect a motor with a 17‑pole circular encoder connector to the 12-pole circular connector of the SME20.

  • KTY/PTC temperature sensors can be used for motor temperature evaluation (only possible with SME20).
  • The Sensor Module is only suitable for motors without absolute track signals (C and D tracks, e.g.:
    • Synchronous motors with pole position identification (1FN, 1FW)
    • Asynchronous motors (induction motors) (1PH)

SME20/SME25 Sensor Modules External evaluate the encoder signals and convert the information obtained to DRIVE-CLiQ. Neither motor nor encoder data are saved in the SME20/SME25.

1) For SME25, only encoders with 5 V supply voltage.

Дизайн



SME20/SME25 Sensor Modules External feature the following connenctions and interfaces as standard:

  • 1 encoder connector via circular plug
  • 1 DRIVE‑CLiQ interface with integrated 24 V DC electronics power supply from the Control Unit or Motor Module
  • 1 PE (protective earth) connection

Интеграция



SME20/SME25 Sensor Modules External communicate with a Control Unit via DRIVE‑CLiQ.

Технические данные



 

SME20 Sensor Module External

6SL3055-0AA00-5EA3

SME25 Sensor Module External

6SL3055-0AA00-5HA3

Encoders

 

  • Incremental encoder sin/cos 1 Vpp
    with 5 V power supply
    0.35 A
  • Absolute encoder EnDat
    with 5 V power supply
    0.35 A
  • Absolute encoder SSI with incremental signals sin/cos 1 Vpp
    with 5 V voltage supply
    0.35 A

Signal subdivision

(Interpolation)

 

≤ 16384 times (14 bit)

≤ 16384 times (14 bit)

Max. encoder frequency that can be evaluated

kHz

≤ 500

≤ 500

SSI/EnDat 2.1 baud rate

kHz

–

100

Measuring system interface

 

12-pin M23 circular connector

17-pin M23 circular connector

Outlet

 

IP67 DRIVE‑CLiQ connector

IP67 DRIVE‑CLiQ connector

Power requirement, max.

at 24 V DC,
not taking encoder into account

A

0.11

0.11

  • Conductor cross-section

 

Acc. to connector contacts

Acc. to connector contacts

  • Protection

 

Via DRIVE‑CLiQ power supply source

Via DRIVE‑CLiQ power supply source

Power loss

W

< 4

< 4

PE connection

 

M4 screw/1.8 Nm

M4 screw/1.8 Nm

Cable length, max.

 

 

 

  • To measuring system 1)

m (ft)

3 (9.84)

3 (9.84)

  • To automatic speed control

m (ft)

100 (328)

100 (328)

Degree of protection

 

IP67

IP67

Dimensions

 

 

 

  • Width

mm (in)

58 (2.28)

58 (2.28)

  • Height

mm (in)

44 (1.73)

44 (1.73)

  • Depth

mm (in)

112 (4.41)

112 (4.41)

Weight, approx.

kg (lb)

0.31 (0.7)

0.31 (0.7)

Approvals, according to

 

cULus

cULus



1) The maximum cable length for the encoder system interface depends on the current consumption of the encoder system and the cross-section of the wires in the cable. However, the maximum length is 10 m (32.8 ft) (for further details, see the Equipment Manual SINAMICS S120 Control Units and supplementary system components).