Yaskawa SI-EM3 — The Yaskawa SI-EM3 is an AC drive communication module designed for Modbus TCP/IP

Part number	SI-EM3
Brand	Yaskawa
Category	Communication Module
Description	The Yaskawa SI-EM3 is an AC drive communication module designed for Modbus TCP/IP
Manufacturer	Yaskawa
Product Line	A1000
Part Number	SI-EM3
Weight	0.06 lbs (0.03 kg)
Series	AC Motors
Product Category	AC Drive Communication Module (Modbus TCP/IP)
Supported Commands	Multi-register read/write (03H, 06H, 10H, 17H), max 16 registers per operation
Option Certification	Modbus-IDA compliant
Connector Type	RJ45 8-pin, shielded Cat 5e cable
Isolation Feature	Isolated physical layer
IP Address Setup	Configurable via drive keypad or network
Network Speed	10/100 Mbps, auto-negotiation
Connection Capacity	10 Modbus TCP/IP, 2 web access sessions
Duplex Options	Half-forced, auto-negotiation, full-forced
Address Initialization	Static, BOOTP, DHCP
Ambient Operating Range	-10°C to +50°C (14°F to 122°F)
Humidity Endurance	Max 95% RH, no condensation
Storage Temperature	-20°C to +60°C (-4°F to 140°F)
Environmental Suitability	Indoor use, no oil, gas, dust, sunlight
Altitude Limitation	Up to 1000 m (3280 ft)

The Yaskawa SI-EM3 is an AC drive communication module designed for Modbus TCP/IP. It handles multi-register read and write operations and can support up to 16 registers per transaction. Users can configure IP settings through either the drive keypad or a network.

Compatibility data for this part number is being verified. Send an RFQ with your equipment model and serial — our suppliers confirm fitment before quoting.

Data compiled from 1 verified source. Last reviewed 2026-08-16.