This manual introduces the features and usage methods of NJI-281H PLC
This document serves as the application manual for the Hitachi NJI-281H series of programmable controllers (PLCs). It provides comprehensive guidance on system features, specifications, and product lineup, including various CPU modules, I/O controllers, and communication modules like Ethernet and DeviceNet.
The manual details the operational procedures, programming methods, and command specifications for the controller. It also covers installation and wiring requirements, communication protocols, real-time clock functions, and troubleshooting procedures for error codes and abnormal operations.
| AC receiving power | 100/110/120 V AC (50/60 Hz), 200/220/240 V AC (50/60 Hz) |
|---|---|
| DC receiving power | 24 V DC |
| Operating ambient temperature | 0 to 55 °C |
| Operating ambient humidity | 20 to 90 % RH (no condensation) |
| Insulation resistance | 20 M Ω or more |
| Dielectric withstand voltage | 1,500 V AC for 1 minute |
The warranty period is the shorter of 18 months from the date of manufacture or 12 months from the date of installation.
No, the manual may not be reproduced in its entirety or any portion thereof without prior consent.