Controller
M2000
Program
Fan Coil Unit
Supply
24 VAC, Class 2
Outputs
5 DO / 3 AO
Protocol
Modbus RTU (RS485)
Panel
NEMA 1, UL508A
Overview
The Prolon PL-PN1-7E is a pre-wired, UL508A certified NEMA 1 control panel built with one Prolon M2000 controller running the Fan Coil Unit Controller program, which operates two-pipe or four-pipe hydronic fan coil systems using PI (proportional-integral) control loops. Isolation relays on all digital outputs, overcurrent fuse protection and clearly marked terminal blocks come factory wired.
Program strategies include two-pipe automatic mode change based on supply water temperature, periodic purge cycles and secondary backup heat control. The panel contains 1 Modbus RTU (RS485) node and runs stand-alone or on a Prolon network of up to 127 nodes.
Specifications per Prolon Pre-Wired One Controller Panel datasheet PL-DATA-PANEL1CON-EN-V1; Prolon PL-M2000-FCU Controller datasheet REV 7.4.0 / PL-DATA-M2000FCU-C/F-EN; Prolon M2000 Fan Coil Controller Hardware Guide REV 7.4.0; Prolon One Controller Panel product page (proloncontrols.com) retrieved 2026-09-22. Reviewed September 2026.
Best For
- Four-pipe fan coils with separate heat and cool valves
- Two-pipe fan coils with automatic changeover
- Fan coils that run on a local schedule without a network
Warranty
For warranty coverage on this Prolon panel, contact ZOT Supply at sales@zotsupply.com or 855-825-2811.
Key Features
Onboard real-time clock
With no Prolon network present, the M2000 fan coil program determines its occupancy state from its on-board real-time clock.
17A isolation relays
Every digital output is isolated by a relay rated 17A @ 277 VAC built into the panel (M2000 = 5), and the controller outputs are protected by resettable fuses.
Fused, pre-wired NEMA 1 panel
Clearly marked terminal blocks, wire management channels and a disconnect-style Slo-Blo fuse (3A @ 250 VAC) with a replacement fuse included. The panel wiring diagram is in the door, and all inputs and outputs are tested in the factory.
Reflash to another program
The M2000 keeps its full functionality, including the ability to reflash into a different controller program. Wiring diagrams are available free at proloncontrols.com.
Manual/off/auto switches
A manual/off/auto switch for each of the eight outputs of the M2000 controller.
Free Prolon Focus software
Remote monitoring and configuration with free Prolon Focus software, stand-alone or networked up to 127 nodes.
Technical Specifications
| Panel | |
|---|---|
| Controller | Prolon M2000, Fan Coil Unit Controller program |
| Supply | 24 VAC ±10%, 50/60 Hz, Class 2 |
| Overcurrent Protection | Disconnect-style Slo-Blo fuse (3A @ 250 VAC), with additional replacement fuse included |
| Enclosure | NEMA 1 |
| Panel Dimensions | 12.25 in. W x 16.25 in. H x 6.25 in. D |
| Weight | 23 lbs (10.5 kg) |
| Isolation Relays | 17A @ 277 VAC on all digital outputs (C1050 = 4, M2000 = 5) |
| Environment | -4 to 122 °F (-20 to 50 °C), non-condensing |
| Panel Certification | Complete panel is UL508A certified |
| Certification | UL916 Energy Management Equipment, CAN/CSA-C22.2, RoHS, FCC part 15: 2012 class B |
| M2000 Controller Hardware | |
| Power | 5 VA (consumption), 40 VA (input) |
| Inputs | 8 configurable universal inputs (outside temp /hot and cold-water supply temps / supply air / leak alarm / proof of fan / room setpoint / zone temperature / Alarm input). Input signals (10k-3 thermistor / dry contact) |
| Digital Outputs | 5 triac outputs, 10-30 VAC source, 300 mA max (self-resetting fuse) |
| Analog Outputs | 3 x 0-10 VDC outputs, 40 mA max (selfresetting fuse) |
| Indication Lights (LED) | State of each output / Communication / Power / State of microprocessor |
| 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 |
| Fan Coil Unit Controller Program | |
| Program | Fan Coil Unit Controller |
| Application | Operates two-pipe or four-pipe hydronic fan coil systems using PI (proportional-integral) control loops |
| Program Inputs | 8 analog inputs: outside temp, hot supply water temp, supply air temp, cold supply water, zone air temp, zone setpoint, fan proof and alarm (thermistor / dry contact) |
| Program Outputs | 5 triac outputs (fan speeds, valves, reheat); 3 x 0-10 VDC analog outputs, 40 mA max (resettable fuse) |
Documentation
Frequently Asked Questions
What is the Prolon PL-PN1-7E?
A pre-wired one controller panel built with a Prolon M2000 controller running the Fan Coil Unit Controller program, in a UL508A certified NEMA 1 enclosure with isolation relays on all digital outputs.
What does the fan coil unit program control?
It operates two-pipe or four-pipe hydronic fan coil systems using PI (proportional-integral) control loops. Strategies include two-pipe automatic mode change based on supply water temperature, periodic purge cycles and secondary backup heat control.
Which inputs does the PL-PN1-7E use?
8 analog inputs: outside temp, hot supply water temp, supply air temp, cold supply water, zone air temp, zone setpoint, fan proof and alarm (thermistor / dry contact).
What power does the panel require?
24 VAC ±10%, 50/60 Hz, Class 2. The M2000 draws 5 VA (consumption), 40 VA (input).
Are the outputs isolated and protected?
Yes. Every digital output is isolated by a relay rated 17A @ 277 VAC built into the panel, the triac outputs are rated 300 mA max with resettable fuses, and the panel has a disconnect-style Slo-Blo fuse (3A @ 250 VAC) with a replacement fuse included.
How does the PL-PN1-7E communicate?
Modbus RTU (RS485), up to 127 nodes, at 9600 to 115200 baud. The panel contains 1 node and is configured with free Prolon Focus software.
What size is the PL-PN1-7E panel?
12.25 in. W x 16.25 in. H x 6.25 in. D, and it weighs 23 lbs (10.5 kg).
Does the panel need a network to run a schedule?
No. If no Prolon network is present, the M2000 fan coil program uses its on-board real-time clock to determine occupancy.
- Panel Type:
- Single Controler Panel
- Display:
- No Display
- Controller Type:
- Fan Coil
- Communication:
- Modbus RTU (RS485)
