The document is about Schneider Electric's Altivar 212 variable speed drive, which introduces the communication protocol, communication configuration, communication fault handling and other contents of the drive.
This manual explains how to install the LONWORKS® option card in the Altivar 212 drive, configure network communication, and use the drive’s monitoring and diagnostic functions. It also provides safety information, hardware descriptions, and details on the supported network variables.
The document includes step‑by‑step procedures for hardware setup, wiring, parameter configuration, and troubleshooting, as well as tables of network variables, commands, and status information needed for integration into a LONWORKS fieldbus system.
| Reference voltage for VIB input | 10 Vdc |
|---|---|
| Maximum current for VIB input | 10 mA |
| Power supply output for relay contacts | 24 VDC, 50 mA |
| Communication speed of LonWorks network | 78 kbit/s |
The manual is intended to install the LONWORKS option card in the Altivar 212 drive and to show how to configure the drive for monitoring and control over a LONWORKS network.
The LonWorks card uses an open‑style 3‑pin connector; the shield (SHLD) must be grounded separately from the power ground, and the data lines (NETA, NETB) are polarity‑free.
If the configured heartbeat timers expire without receiving updates for key network variables, the drive will revert speed setpoints to their initial values.