Description
Front Connector 490 — Connector
Siemens · Front Connector 490 · 6ES5490-7LB21
Description
SIMATIC S5 490 front connector, 46-pin, screw-terminal type, used to terminate field wiring on S5-115U digital/analog I/O modules.
Key specifications
Parameter | Value |
Function | Front connector, screw terminal type |
Pin count | 46-pin |
Compatible controller | S5-115U |
Application | Terminates field wiring for S5-115U I/O modules |
Reference
Field | Value |
Manufacturer (OEM) | Siemens |
Model | Front Connector 490 |
Part number | 6ES5490-7LB21 |
Part number (as inventoried) | 6ES5 490-7LB21 |
Category | Connector/Cable |
System family | SIMATIC S5-115U |
Stores quantity | 33 |
Data confidence | high |
Manuals filed (007 - Manuals)
- Manual CP1430 English Vol1.pdf — S5-115U system reference (CP/comms volume)
- 02 - CPU948 Programming Manual.pdf — S5 CPU programming reference (115U/155H family)
Notes
Confirmed via relectric.com, 4dcontrols.com, and BG Industrial Surplus listings matching exact order number and 46-pin screw-type description. Inventory desc mentions 'Simadyn' but this is a standard SIMATIC S5-115U front connector, not a SIMADYN D part; treated per verified S5 identity.
Source: Spare Parts List for Sales V7 (Bohemia Market / BM Global stores inventory). Filed in the AI HW Knowledge Base.