EL7

An EL7 model code tells you the command interface, the power, whether safety and UL are built in, and the supply voltage. In the current code, EL7-EC750S is an EtherCAT drive of 750 W in the S version (STO and UL certification) for 220 V. A T at the end means a 400 V three-phase drive, and RS or PN in place of EC means pulse/analog/Modbus or PROFINET. Leadshine's current EL7-ECS manual gives 5.5 A rated and 16.6 A peak for EL7-EC750S. Its two-page catalogue disagrees with the manual on three currents, and the older EL7-D750Z sold on Leadshine's site is not in any current EL7 manual. Size the drive from the manual table of the exact code you will receive.

Model code

EL7-[RS | EC | PN][power][S][T]: RS = pulse + direction, analog input or Modbus RTU; EC = EtherCAT; PN = PROFINET. S = version with STO and UL certification. No final letter = 220 VAC single- or three-phase; T = 400 VAC three-phase (EL7-ECS manual V1.1, printed p.10)

Older RS code

In the EL7-RS manual V2.0.1 the letter after the power is P = full functions without STO, F = full functions with STO; for example EL7-RS750P

220 V EtherCAT drives (rated / peak Arms)

EC400S 2.5 / 9.5 · EC750S 5.5 / 16.6 · EC1000S 7.0 / 21.0 · EC1500S 9.5 / 31.1 · EC2000S 12.0 / 36.0. Supply single- or three-phase 200–240 V, −10% to +10% (manual p.11)

400 V EtherCAT drives (rated / peak Arms)

EC1000ST 3.5 / 10.6 · EC1500ST 5.4 / 14.0 · EC2000ST 8.4 / 20.0 · EC3000ST 11.9 / 30.0 · EC4400ST 16.5 / 38.9 · EC5500ST 20.8 / 51.6 · EC7500ST 25.7 / 63.6. Supply three-phase 380–440 V (manual p.11)

220 V pulse drives (rated / peak Arms)

RS400P 3.5 / 9.5 · RS750P 5.5 / 16.6 · RS1000P 7.0 / 21.0 · RS1500P 9.5 / 31.1 · RS2000P 12 / 36; RS1500P and RS2000P also accept three-phase input; P versions have no STO (EL7-RS manual p.13)

Catalogue vs manual

The EL7-ECS catalogue D260529 prints EC400S at 3.5 A rated (manual 2.5 A), EC2000ST at 24.8 A peak (manual 20.0 A) and EC3000ST at 33.2 A peak (manual 30.0 A). It lists CE, STO and UL as 'ALL models are in plan'

Encoder and motors

23-bit multiturn absolute magnetic or optical encoder (manual p.11); the EC750S page lists matching motors from 50 W to 2000 W and cables for ELM1/ELM2 motors

Safety

STO is 'available for all EL7-ECS series products' (manual p.12). The RS P version has none

Response

Speed-loop bandwidth up to 3.2 kHz in the manual; the EC750S product page says 3.5 kHz. EtherCAT synchronisation cycle 62.5 µs (catalogue)

Environment

Operating 0–55 °C, derate 2% per °C above 45 °C; no derating below 1,000 m, 1% per 100 m above it, 2,000 m maximum (manual pp.12–13)

EL7-D750Z

Leadshine's product page lists it at single-phase 220 VAC, 750 W, 5.5 A rated and 15.5 A peak, pulse + direction, 9 inputs and 6 outputs, 17-bit or 23-bit encoder. It does not appear in the current EL7-ECS or EL7-RS manuals or the catalogue, and the page links no manual

Manufacturer

Leadshine Technology Co., Ltd. (深圳市雷赛智能控制股份有限公司), Shenzhen; see the manufacturer profile for company details

Questions for this product range

1. Which command version do you need: RS (pulse/analog/Modbus), EC (EtherCAT) or PN (PROFINET)?
2. Is the quoted drive the S version with STO and UL, or a P version without STO?
3. 220 V (no suffix) or 400 V three-phase (T)? Check the supply phase for the 220 V models.
4. Confirm rated and peak current from the manual for the exact code; the catalogue differs for EC400S, EC2000ST and EC3000ST.
5. If you are replacing an EL7-D750Z, which current model and manual does Leadshine supply instead?
6. Motor model, encoder type and cable lengths for the matched axis.

Source documents

Source notes checked 2026-10-30. See the linked manufacturer documents for model and option details.