Product Description
The Mitsubishi Q172LX is a Servo External Signals Interface Module designed for use with the MELSEC-Q Series Motion CPU systems (Q172CPU(N), Q173CPU(N), Q172HCPU, Q173HCPU, and related). It receives external signals — including upper/lower stroke limits (FLS/RLS), STOP, and DOG/CHANGE signals — required for positioning and motion control across up to 8 servo axes per module. The Q172LX installs on the Q Series base unit and occupies 32 I/O points, functioning as an intelligent function module within Mitsubishi's Multi-CPU motion control architecture. Signal type is digital, and the module communicates via the MELSEC communication standard.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | Mitsubishi Electric |
| Model / Part Number | Q172LX |
| Product Name | Servo External Signals Interface Module |
| Product Family / Series | MELSEC-Q Series |
| Analog / Digital | Digital |
| Controller Platform | MELSEC-Q Series Motion Controller |
| Communication Standard | MELSEC |
| Number of I/O Occupying Points | 32 points (I/O Allocation: Intelligent, 32 points) |
| Number of Servo External Input Points | 32 points (8 axes per module) |
| Controlled Signals per Axis | FLS (Upper Stroke Limit), RLS (Lower Stroke Limit), STOP, DOG/CHANGE |
| Input Method | Sink / Source type (Photocoupler) |
| Isolation Method | Photocoupler |
| Rated Input Voltage | 12VDC / 24VDC |
| Rated Input Current | 12VDC: 2mA / 24VDC: 4mA |
| ON Voltage / Current | 10VDC or more / 2.0mA or more |
| OFF Voltage / Current | 1.8VDC or less / 0.18mA or less |
| Input Resistance | Approx. 5.6 kΩ |
| Internal Current Consumption (5VDC) | 0.05 A |
| Common Terminal Arrangement | 32 points / common (Common terminal: B1, B2) |
| External Connector Type | 40-pin connector (CTRL connector per axis) |
| Exterior Dimensions (H × W × D) | 98mm × 27.4mm × 90mm (3.86" × 1.08" × 3.54") |
| Weight | 0.15 kg |
| Max Installable per Q173CPU(N) | 4 modules |
| Max Installable per Q172CPU(N) | 1 module |
| Compatible Motion CPU Modules | Q172CPU(N), Q173CPU(N), Q172HCPU, Q173HCPU, Q172DCPU, Q173DCPU |
| Mounting Type | Q Series Base Unit (module rail mount) |
| ON Indication | LED (Mode Judging LED, displays servo external input status per axis, X0–X1F) |
| Applicable System | MELSEC-Q Series Multi-CPU Motion Control System |
We warranty all items for 30 days from date of purchase.
Other Details
We warranty all items for 30 days from date of purchase. If you experience any issues with your item within this period, please contact us and we will work with you to resolve the problem. This warranty covers defects in functionality but does not cover damage caused by misuse, improper installation, or normal wear and tear.Product Videos
Custom Field
GTIN 679523686161
Country/Region of Manufacture Japan
Dimensions 98mm(H) × 27.4mm(W) × 90mm(D)
Current 2.0mA or more
Manufacturer Mitsubishi
Cable MELSEC-Q Series Multi-CPU Motion Control System
Empty Weight 0.15 kg
Part Number Q172LX
Controller Platform MELSEC-Q Series Motion Controller
Series MELSEC-Q
Shelf F-14
Input Amperage 12VDC: 2mA / 24VDC: 4mA
Input Voltage 12VDC / 24VDC
Model Q172LX
MPN Q172LX
Voltage 10VDC or more
Type PLC I/O Module
