Description
The Reliance Electric DDS-LPS is a Direct Digital System (DDS) Logic Processor Module designed for Reliance industrial DC drive control systems. It functions as a control processing and I/O interface module, managing drive logic sequences, feedback processing, and communication between the drive controller and external automation equipment.
The DDS-LPS module is used in legacy Reliance DDS drive architectures for motor speed regulation, torque control, protection monitoring, and system coordination. It provides logic processing functions with analog and digital signal interfaces, making it suitable for heavy-duty industrial motion control applications such as manufacturing lines, material handling systems, and process equipment.
This module is commonly supplied as a replacement spare for existing Reliance DDS installations where maintaining original drive hardware is required. Available conditions include refurbished, used, and surplus inventory.
Reliance DDS-LPS
🔹 Product Parameters
| Parameter | Specification |
|---|---|
| Brand | Reliance Electric |
| Model | DDS-LPS |
| Series | Direct Digital System (DDS) Drive Series |
| Product Name | Logic Processor Module / Drive Control Module |
| Module Type | Digital Drive Controller Board |
| Application | DC Motor Drive Control, Speed & Torque Regulation |
| Input Signal | Analog / Digital Control Signals |
| Analog Input Range | 0–10 VDC |
| Communication Interface | Proprietary DDS Backplane Interface |
| Power Supply | 24 VDC Logic Supply |
| Dimensions | Approx. 300 × 200 × 40 mm |
| Weight | Approx. 2.72 kg |
| Installation Type | DDS Rack Plug-in Module |
| Operating Temperature | Approx. 0°C to +55°C |
| Compatible Systems | Reliance DDS Drive Cabinets |
| Manufacturer Origin | USA |
| Product Status | Pre-Owned / Refurbished / Surplus |
| Discontinued Status | Legacy Product, Limited Availability |
🔹 Common Questions & Answers
Q: What is the main function of the Reliance DDS-LPS?
A: The DDS-LPS is a logic processor module that controls drive operation, processes feedback signals, and manages communication within Reliance DDS drive systems.
Q: Is DDS-LPS a PLC CPU module?
A: No. It is a dedicated drive control processor module designed for Reliance DC drive systems.
Q: Which equipment uses the DDS-LPS module?
A: It is mainly used in Reliance Direct Digital System drive racks and industrial DC motor control applications.
Q: What signals can the DDS-LPS process?
A: The module supports analog and digital control signals used for speed references, feedback processing, logic control, and drive status monitoring.
Q: What are common failure symptoms?
A: Typical issues include drive startup failure, loss of speed regulation, communication errors, incorrect feedback processing, and controller diagnostic alarms.
Q: What should be checked before replacement?
A: Verify the exact DDS-LPS model, DDS rack compatibility, connector configuration, drive firmware/setup parameters, and installed option modules.
Q: Is the DDS-LPS still manufactured?
A: The DDS-LPS is considered a legacy Reliance Electric component and is mainly available through industrial spare-part suppliers and refurbishment channels.
🔹 Recommended Reliance Electric Models
- DDS-PMI Module – Power Module Interface Controller
- DDS-UDC Module – Universal Drive Controller Module
- DDS-DPF Module – Digital Drive Processor Module
- DDS-LPF Module – Direct Digital System Logic Power Module
- DDS-PG1F Module – Panel Programming Interface Module
- GV3000 Drive Controller – Digital AC Drive Controller
- SP600 Drive Module – Adjustable Frequency AC Drive
- AutoMax Processor Module – Reliance Industrial Control Processor
- 57C430 AutoMax Module – Processor Interface Module
- 57C413B Common Memory Module – AutoMax Memory Module
- 0-57405-C Analog I/O Module – Drive Analog Interface Module
- WR-D4007 Power Supply Module – Reliance Drive Power Supply
- DCS500 Digital Drive Module – DC Drive Control System
- FlexPak Plus DC Drive – Industrial DC Motor Drive
- Reliance MaxPak Plus Drive Controller – Industrial Motion Control Module
