Modicon M171/M172/M173
- Type
- HVAC controller
- Applications
- Chillers, heat pumps, AHU, etc.
- Scale / I/O
- Various integrated I/O
- Communication & motion
- Modbus/BACnet/Ethernet by model
- Engineering software
- Machine Expert HVAC
Schneider Electric · Modicon
Modicon M171 / M172 / M173 PLC / PAC Control Platform
Dedicated HVAC controllers for chillers, heat pumps, air-handling units and connected equipment.
This page supports platform, model, I/O and engineering-architecture identification. Confirm the full designation against supply, signal types, networks, expansion modules, software and firmware versions.
- HVAC controller
- Platform type
- Various integrated I/O
- Scale and I/O
- 16
- Controller models
- 0
- Expansion items
PRODUCT OVERVIEW
Modicon M171 / M172 / M173
Dedicated HVAC controllers for chillers, heat pumps, air-handling units and connected equipment.
The page retains controller, expansion-I/O, software and model-code information so the review can continue against the actual control architecture.
- ApplicationsChillers, heat pumps, AHU, etc.
- Scale and I/OVarious integrated I/O
- Communications and motionModbus/BACnet/Ethernet by model
- Engineering softwareMachine Expert HVAC
PLATFORM STRUCTURE AND CORE CAPABILITIES
- 01
Controller-platform role
HVAC controller
- 02
Embedded and expansion I/O
Various integrated I/O
- 03
Networks, fieldbus and motion
Modbus/BACnet/Ethernet by model
- 04
Engineering software and project version
Machine Expert HVAC
TECHNICAL DATA AND PLATFORM BRANCHES
CONTROLLER REFERENCES
16 models
Confirm supply, I/O, electrical outputs, networks, expansion, software and firmware before finalizing the order number.
| Model | Controller type | Supply | Embedded I/O | Output type | Ethernet | Fieldbus / motion | Program / performance | Expansion scale | Software |
|---|---|---|---|---|---|---|---|---|---|
| TM171OD14R | Programmable HVAC controller | 24 Vac/Vdc (by model) | 14 I/O class | Relay/solid-state/mixed, by model | By model | Modbus; display/basic HVAC | Optimized for HVAC applications | Supports HVAC sensors, actuators, and network integration | EcoStruxure Machine Expert HVAC |
| TM171OBM22R | Programmable HVAC controller | 24 Vac/Vdc (by model) | 22 I/O class | Relay/solid-state/mixed, by model | By model | Modbus; on-board control | Optimized for HVAC applications | Supports HVAC sensors, actuators, and network integration | EcoStruxure Machine Expert HVAC |
| TM171OF22R | Programmable HVAC controller | 24 Vac/Vdc (by model) | 22 I/O class | Relay/solid-state/mixed, by model | By model | HVAC-dedicated I/O | Optimized for HVAC applications | Supports HVAC sensors, actuators, and network integration | EcoStruxure Machine Expert HVAC |
| TM171ODM22R | Programmable HVAC controller | 24 Vac/Vdc (by model) | 22 I/O class | Relay/solid-state/mixed, by model | By model | Modbus; display | Optimized for HVAC applications | Supports HVAC sensors, actuators, and network integration | EcoStruxure Machine Expert HVAC |
| TM171PBM27R | Programmable HVAC controller | 24 Vac/Vdc (by model) | 27 I/O class | Relay/solid-state/mixed, by model | By model | Programmable HVAC control | Optimized for HVAC applications | Supports HVAC sensors, actuators, and network integration | EcoStruxure Machine Expert HVAC |
| TM171PDM27R | Programmable HVAC controller | 24 Vac/Vdc (by model) | 27 I/O class | Relay/solid-state/mixed, by model | By model | Programmable HVAC control | Optimized for HVAC applications | Supports HVAC sensors, actuators, and network integration | EcoStruxure Machine Expert HVAC |
| TM171PFE03HR | Programmable HVAC controller | 24 Vac/Vdc (by model) | Dedicated expansion/control | Relay/solid-state/mixed, by model | By model | HVAC-dedicated | Optimized for HVAC applications | Supports HVAC sensors, actuators, and network integration | EcoStruxure Machine Expert HVAC |
| TM172ODM18R | Programmable HVAC controller | 24 Vac/Vdc (by model) | 18 I/O class | Relay/solid-state/mixed, by model | By model | Modbus/BACnet by version | Optimized for HVAC applications | Supports HVAC sensors, actuators, and network integration | EcoStruxure Machine Expert HVAC |
| TM172ODM28R | Programmable HVAC controller | 24 Vac/Vdc (by model) | 28 I/O class | Relay/solid-state/mixed, by model | By model | Modbus/BACnet by version | Optimized for HVAC applications | Supports HVAC sensors, actuators, and network integration | EcoStruxure Machine Expert HVAC |
| TM172PDG28R | Programmable HVAC controller | 24 Vac/Vdc (by model) | 28 I/O class | Relay/solid-state/mixed, by model | By model | Ethernet/Modbus/BACnet | Optimized for HVAC applications | Supports HVAC sensors, actuators, and network integration | EcoStruxure Machine Expert HVAC |
| TM172PDG28RI | Programmable HVAC controller | 24 Vac/Vdc (by model) | 28 I/O class | Relay/solid-state/mixed, by model | By model | Ethernet, Modbus, BACnet, Web | Optimized for HVAC applications | Supports HVAC sensors, actuators, and network integration | EcoStruxure Machine Expert HVAC |
| TM172PDG28SI | Programmable HVAC controller | 24 Vac/Vdc (by model) | 28 I/O class | Relay/solid-state/mixed, by model | By model | Ethernet, Modbus, BACnet, Web | Optimized for HVAC applications | Supports HVAC sensors, actuators, and network integration | EcoStruxure Machine Expert HVAC |
| TM173ODM22R | Programmable HVAC controller | 24 Vac/Vdc (by model) | 22 I/O class | Relay/solid-state/mixed, by model | By model | Modbus; next-generation HVAC | Optimized for HVAC applications | Supports HVAC sensors, actuators, and network integration | EcoStruxure Machine Expert HVAC |
| TM173ODEM22R | Programmable HVAC controller | 24 Vac/Vdc (by model) | 22 I/O class | Relay/solid-state/mixed, by model | By model | Ethernet/Modbus; next-generation HVAC | Optimized for HVAC applications | Supports HVAC sensors, actuators, and network integration | EcoStruxure Machine Expert HVAC |
| TM173OBM22R | Programmable HVAC controller | 24 Vac/Vdc (by model) | 22 I/O class | Relay/solid-state/mixed, by model | By model | On-board HVAC control | Optimized for HVAC applications | Supports HVAC sensors, actuators, and network integration | EcoStruxure Machine Expert HVAC |
| TM173ODM22S | Programmable HVAC controller | 24 Vac/Vdc (by model) | 22 I/O class | Relay/solid-state/mixed, by model | By model | Solid-state output version | Optimized for HVAC applications | Supports HVAC sensors, actuators, and network integration | EcoStruxure Machine Expert HVAC |
ENGINEERING SOFTWARE
Software compatibility and migration
| Software | Controller ranges | Project type | Integration | Version notes | Migration notes |
|---|---|---|---|---|---|
| EcoStruxure Machine Expert HVAC | M171 / M172 / M173 | HVAC equipment projects | Modbus, BACnet, Ethernet, Web by model | Old and new reference numbers and library versions must be checked | When replacing, verify I/O, electrical terminals, and application libraries |
INQUIRY CHECKLIST
- Complete designation and nameplate
- Supply and grounding
- Embedded and expansion I/O list
- Digital and analog signals
- Ethernet and fieldbus networks
- Motion-control or safety requirements
- Engineering software and project version
- Firmware, quantity and application
PLATFORM SUMMARY
- Product platform
- Modicon M171 / M172 / M173
- Type
- HVAC controller
- Scale / I/O
- Various integrated I/O
- Communications / motion
- Modbus/BACnet/Ethernet by model
- Engineering software
- Machine Expert HVAC
APPLICATIONS
Machine automation
Review program size, scan cycle, networks, motion control and machine-safety requirements.
Process control
Define the architecture around availability, redundancy, remote I/O, communications and engineering software.
Equipment and lines
Structure the control system around I/O scale, network topology and maintenance.
System modernization
Begin migration review with the original program, module list, firmware, networks and wiring.
RECOMMENDED PLATFORM RANGES
Modicon M171/M172/M173
HVAC controller
- Scale / I/O
- Various integrated I/O
- Software
- Machine Expert HVAC
This is a platform overview, not a complete system selection. Verify the final configuration against the full catalog number, program, I/O, electrical, network, software, firmware and mechanical conditions.
