Home / Mitsubishi Electric (Factory Automation) / Mitsubishi MELSEC-Q Series – CPU / Q172DSCPU Mitsubishi MELSEC-Q Series Motion CPU

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Q172DSCPU Mitsubishi MELSEC-Q Series Motion CPU

MPN: Q172DSCPU · Brand: Mitsubishi Electric (Factory Automation)

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12-month warranty (new) · 3-month (used/refurbished)

30-day returns, no restocking fee on unused parts

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Quick facts

Availability	Confirmed on request
Category	Mitsubishi MELSEC-Q Series – CPU
Lifecycle	Active mature
Warranty	12-month (new) · 3-month (used/refurbished)

Shipping & availability

When can Q172DSCPU be shipped?

Q172DSCPU is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up Q172DSCPU in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for Q172DSCPU and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for Q172DSCPU, subject to availability and destination.

The Mitsubishi Electric Q172DSCPU is a motion CPU in the MELSEC-Q Series. Maximum number of control axes: 16 axes , SSCNET III/H connection. Mitsubishi Electric has announced its discontinuation (2029/09 To be end of order) — plan spares now; PartnerPLC also sources it on the surplus market after the end of order. Specifications and manuals below are Mitsubishi Electric's own data.

Specifications

Product

Series	MELSEC-Q Series
Category	Motion CPU
Type	Motion controller
Subtype	SSCNETⅢ/H
Sales status	2029/09 To be end of order (Mitsubishi Electric)
Outline	Maximum number of control axes: 16 axes , SSCNET III/H connection

Control specifications

Number of control axes	Up to 16 axes
Operation cycle (operation cycle settings) *1	0.22 ms, 0.44 ms, 0.88 ms, 1.77 ms, 3.55 ms, 7.11 ms
Interpolation function	Linear interpolation (up to 4 axes), 2-axis circular interpolation, helical interpolation (3 axes)
Control method	Positioning control, speed control, speed-torque control, speed-position switching control, fixed-pitch feed control, synchronous control (SV22 (advanced synchronous control method/virtual mode switching method)), cam control (SV22), constant speed control, position follow-up control, speed control with fixed position stop, high-speed oscillation control, speed switching control
Acceleration/deceleration processing	Trapezoidal acceleration/deceleration, S-curve acceleration/deceleration, advanced S-curve acceleration/deceleration
Compensation function	Backlash compensation, electronic gear, phase compensation (SV22)
Synchronous control	Synchronous encoder input, cam, phase compensation, cam auto-generation
Control unit	mm, inch, degree, pulse
Programming language	Motion SFC, dedicated instruction, mechanical support language (SV22)
Servo program capacity	16k steps
Number of positioning points	3200 points (positioning data can be set indirectly)
Home position return	Proximity dog method (2 types), count method (3 types), data set method (2 types), dog cradle method, stopper method (2 types), limit switch combined method, scale home position signal detection method, dogless home position signal reference method (home position return re-try function provided, home position shift function provided)
Positioning control	Linear interpolation control (up to 4 axes), fixed-pitch feed control (up to 3 axes), 2-axis circular interpolation (auxiliary point-specified, radius-specified, central point-specified), speed control (1-axis), speed-position switching control (INC mode), current value change
Manual control	JOG operation, manual pulse generator operation (possible to connect 3 modules (Q173DPX use), possible to connect 1 module (internal I/F use) *6 )
Speed-torque control	Speed control not including position loop, torque control, continuous operation to torque control
Multiple CPU synchronous control	Up to 96 axes (by use of three modules of Q173DSCPU)
Synchronous encoder operation function	12 modules connectable (SV22) 8 (Q172DEX + Q173DPX + built-in interface in Motion CPU + via device 7 + via servo amplifier 7 9 + multiple CPU synchronous control *7 )
Speed limit	Speed limit value, JOG speed limit value
Torque limit function	Torque limit value (positive/negative direction)
M-code output function	Provided
Speed change	Provided
Acceleration/deceleration processing change	Acceleration/deceleration time
Limit switch output function	Number of output points: 64 points (advanced synchronous control method), 32 points (virtual mode switching method (SV13)) Watch data: Motion control data, word device
ROM operation function	Provided
External input signal	Q172DLX (FLS, RLS, STOP, DOG), external input signals (FLS, RLS, DOG) of servo amplifier, internal I/F (DI), bit device
High-speed reading function *10	Available (via input module, built-in interface in Motion CPU, tracking of Q172DEX/Q173DPX)
Mark detection function	Continuous detection mode, specified number of detections mode, ring buffer mode
Mark detection function: Mark detection signal	4 points (via Internal I/F), bit device, Q172DLX (DOG)
Mark detection function: Mark detection setting	32 settings
Torque limit value change	Provided
Target position change function	Target position change, movement distance change
Servo parameter change function	Provided
Servo amplifier control mode switching function	Gain switching function, PI-PID control, control loop changing (fully closed loop control, semi closed loop control)
Optional data monitor function	Up to 6 data/axis (communication data: up to 6 points/axis)
Forced stop	Motion controller forced stop (EMI connector, system setting), forced stop terminal of servo amplifier
Software stroke limit function	Movable range check with current feed value
Hardware stroke limit function	Provided
Number of I/O points	256 points
Clock function	Provided
Security function	Password registration, password for every Motion SFC program, software security key function
All clear function	Delete all user data in Motion CPU
Remote operation	Remote RUN/STOP, remote latch clear
Digital oscilloscope function	Bit data: 16 channels, word data: 16 channels *5
Driver communication function	Provided
Amplifier-less operation function	Provided
Absolute position system	Provided (Made compatible by setting battery to servo amplifier.)
Number of SSCNET III/H lines *2	1 line
Number of Motion modules	Q172DLX: 2 modules usable Q172DEX: 6 modules usable 3 Q173DPX: 4 modules usable 4

Module specifications

Number of control axes	Up to 16 axes
Servo amplifier connection method	SSCNET III/H (1 line)
Maximum overall cable distance [m]	SSCNET III/H: 1600, SSCNET III: 800
Maximum distance between stations [m]	SSCNET III/H: 100, SSCNET III: 50
Number of SSCNET III/H head module connection stations	Up to 4 stations
PERIPHERAL I/F	Motion CPU: PERIPHERAL I/F Via PLC CPU: USB, RS-232, Ethernet
Manual pulse generator interface	Possible to connect 3 modules of manual pulse generator
Controllable modules: Q172DLX	Up to 2 modules per CPU
Controllable modules: Q172DEX	Up to 6 modules per CPU (SV22 use)
Controllable modules: Q173DPX	Up to 4 modules per CPU (incremental synchronous encoder use in SV22) Up to 1 module per CPU (only manual pulse generator use)
Controllable modules: Q173DSXY	Up to 3 modules
Controllable modules: I/O module	Total: up to 256 points per CPU
Controllable modules: Analog module	Total: up to 256 points per CPU
Controllable modules: QI60	Up to 1 module per CPU
Input signal: Number of input points	4 points
Input signal: Input method	Positive common/negative common shared type (photocoupler isolation)
Input signal: Rated input voltage/current	24 V DC/Approx. 5 mA
Input signal: Operating voltage range	20.4 V DC to 26.4 V DC (+10 %/-15 %, ripple ratio 5 % or less)
Input signal: ON voltage/current	17.5 V DC or more/3.5 mA or more
Input signal: OFF voltage/current	5 V DC or less/0.9 mA or less
Input signal: Input resistance	Approx. 5.6 kΩ
Input signal: Response time	1 ms or less (OFF to ON, ON to OFF)
Input signal: Recommended wire size	AWG 18 to AWG 22
Forced stop input signal: Number of input points	1 point
Forced stop input signal: Input method	Sink/source (photocoupler isolation)
Forced stop input signal: Rated input voltage/current	24 V DC/Approx. 2.4 mA
Forced stop input signal: Operating voltage range	20.4 V DC to 26.4 V DC (+10 %/-15 %, ripple ratio 5 % or less)
Forced stop input signal: ON voltage/current	17.5 V DC or more/2.0 mA or more
Forced stop input signal: OFF voltage/current	1.8 V DC or less/0.18 mA or less
Forced stop input signal: Input resistance	Approx. 10 kΩ
Forced stop input signal: Response time	1 ms or less (OFF to ON, ON to OFF)
Forced stop input signal: Recommended wire size	AWG 22
Manual pulse generator/incremental synchronous encoder signal: Signal input form	Phase A/phase B (magnification by 4)
Manual pulse generator/incremental synchronous encoder signal: Maximum input pulse frequency	Up to 1 Mpps (after magnification by 4, up to 4 Mpps) (differential-output type) Up to 200 kpps (after magnification by 4, up to 800 kpps) (voltage-output/open-collector type)
Number of stages of extension base	Up to 7 stages
5 V DC internal current consumption [A]	1.44
Mass [kg]	0.38
Exterior dimensions [mm]	120.5 (H) × 27.4 (W) × 120.3 (D)

Downloads & documentation

Official documents from Mitsubishi Electric (Factory Automation), downloaded directly from the manufacturer.

Data sheets & manuals

To Use The Motion Controller Safety (IB-67243E-G)	PDF · 0.33MB
Pour la sécurité d'utilisation du contrôleur de mouvement (IB-67243F-G)	PDF · 0.43MB
Q173D(S)CPU/Q172D(S)CPU User's Manual (IB-0300133-Q)	PDF · 3.55MB
Programming Manual (COMMON) [type Q173D(S)/Q172D(S)] (IB-0300134-N)	PDF · 2.88MB
SV13/22Programming Manual (Motion SFC) [type Q173D(S)/Q172D(S)] (IB-0300135-N)	PDF · 5.24MB
SV13/22Programming Manual (REAL MODE) [type Q173D(S)/Q172D(S)] (IB-0300136-N)	PDF · 6.52MB
SV22Programming Manual (VIRTUAL MODE) [type Q173D(S)/Q172D(S)] (IB-0300137-N)	PDF · 3.90MB
SV22Programming Manual (Advanced Synchronous Control) [type Q173DS/Q172DS] (IB-0300198-J)	PDF · 3.39MB
Programming Manual (Safety Observation) [type Q173D(S)/Q172D(S)] (IB-0300183-D)	PDF · 2.67MB
Safety signal module Q173DSXY Safety Information (IB-0300186E-F)	PDF · 0.35MB