RKC Instrument PZ400/PZ900 Program Controller User Manual

About this manual

This manual introduces the PZ400/PZ900 program controller, its intended use in industrial machinery, and essential safety precautions such as avoiding high‑voltage contact, using proper protective circuits, and not operating in flammable or explosive atmospheres.

It covers installation and wiring methods, describes the function of each terminal, explains how to set parameters, switch modes, and communicate via MODBUS. The guide also includes troubleshooting advice and references to related manuals for deeper configuration and communication details. This manual is written in Chinese.

What's inside

• Safety Precautions
• Installation
• Wiring
• Part Names and Basic Operation
• Mode Switching
• Control Loop Break Alarm
• Program and Communication Settings
• Instrument Information Confirmation
• Product Specifications

Specifications

Frequently asked questions

What is the maximum indoor wiring length for the controller?

The indoor wiring length should not exceed 30 meters; longer runs require surge‑suppression devices.