Specifications sourced from Prolon datasheet PL-DATA-M2000RTUS-C/F-EN, REV 7.3.1. Verified September 18, 2026.
Overview
The M2000 RTUS controls rooftop units and air treatment equipment in unitary applications driven by a single space temperature sensor. Sequences include economizer, preheating, CO2 levels, dehumidification, and static pressure control. It stages up to 3 stages of heating and 2 stages of cooling, expanding to 8 cooling stages once coupled with a FLX controller. Its 9 analog inputs accept thermistor, dry contact, 4-20mA, 0-5 VDC, and RH% signals, individually configurable per input.
Best For
- Single-zone rooftop units controlled from one space temperature sensor
- Constant volume units needing economizer, DCV, and dehumidification
- Units that stage 3 heating stages and 2 cooling stages
- Stand-alone rooftops that may later join a Modbus RTU network
Warranty and Sourcing
Key Features
Single space sensor
Designed for unitary systems using a single space temperature sensor.
Economizer and DCV
Economizer, demand controlled ventilation (DCV), and dehumidification sequences are available.
3 heating stages
Controls up to 3 stages of heating.
Cooling expandable to 8 stages
Controls 2 stages of cooling, and up to 8 stages once coupled with a FLX controller.
RH% capable inputs
Input signals include thermistor, dry contact, 4-20mA, 0-5 VDC, and RH%, individually configurable per input.
Unoccupied sequences
Configurable unoccupied mode sequences with an internal clock, schedules, and calendars.
- Static pressure control and CO2 level inputs
- A manual/off/auto switch for each of the eight outputs
- Stand-alone or networked (up to 127 nodes)
- Proportional integral (PI) control loops
- 5 digital outputs and 3 analog outputs equipped with resettable fuses
- Built-in protection sequences with configurable temperature limits and minimum delays
Technical Specifications
| Specification | PL-M2000-RTUS |
|---|---|
| Supply | 24 VAC +/-10%, 50/60 Hz, Class 2 |
| Power | 5 VA (consumption), 40 VA (input) |
| Inputs | 9 configurable analog inputs (outside temp / return / supply / mixed air / room, dry contact for clogged filter / schedule override / proof of fan / room setpoint / CO2 levels / static pressure / auxiliary temp). Input signals (thermistor / dry contact / 4-20mA / 0-5 VDC / RH%) individually configurable for each input |
| Digital Outputs | 5 triac outputs, 10-30 VAC source, 300 mA max (resettable fuse) |
| Analog Outputs | 3 x 0-10 VDC outputs, 40 mA max |
| Indication Lights (LED) | State of each output / Communication / Power / State of microprocessor |
| Microprocessor | PIC18F6722, 8 bits, 40 MHz, 128 KB FLASH memory |
| Casing | Molded ABS, UL94-HB |
| Communication | Modbus RTU (RS485), up to 127 nodes |
| Baud Rates | 9600, 19200, 38400, 57600, 76800, 115200 |
| Connection | Removable screw-type terminal blocks (max 16 AWG) and RJ45 modular jacks |
| Dimensions | 5.39 in x 4.41 in x 2.25 in (137 mm x 112 mm x 57 mm) |
| Weight | 1.05 lbs (0.48 kg) |
| Environment | -4 to 122 °F (-20 to 50 °C) Non-Condensing |
| Certification | UL916 Energy Management Equipment, CAN/CSA-C22.2, RoHS, FCC part 15: 2012 class B |
Documentation
Frequently Asked Questions
What is the PL-M2000-RTUS designed for?
Rooftop units and HVAC air treatment equipment in unitary systems that control a space using a single space temperature sensor.
How many heating and cooling stages does the PL-M2000-RTUS control?
Up to 3 stages of heating and 2 stages of cooling. Cooling expands to 8 stages once the controller is coupled with an M2000 FLX controller.
Does the PL-M2000-RTUS support demand controlled ventilation?
Yes. Demand controlled ventilation (DCV) and dehumidification sequences are available, along with economizer, preheating, CO2 levels, and static pressure control.
Can the PL-M2000-RTUS read a humidity sensor?
Yes. Input signals include RH%, along with thermistor, dry contact, 4-20mA, and 0-5 VDC, individually configurable for each of the 9 inputs.
Can the PL-M2000-RTUS run stand-alone?
Yes. It operates stand-alone or networked over Modbus RTU (RS485) with up to 127 nodes, at 9600 through 115200 baud.
- Controller Type:
- Rooftop
- Digital Outputs:
- 5
- Analog Outputs:
- 3
- Inputs:
- 9
- Communication:
- Modbus RTU (RS485)
- Product Series:
- M2000
