Specifications from the Prolon Zone / Bypass Damper Controllers PL-VC3000 series datasheet, document 802-00094-003 (Datasheet_VC3000-V3.pdf), reviewed October 28, 2026.
The PL-VC3000 platform combines an integrated microprocessor with an on-board brushless actuator and electronic damper-position feedback. The LT-PD variant is the simplest VC3000 option for basic dampers without flow control. The product selection table lists its typical application as changeover bypass / VVT systems. Outputs and control sequences can be configured locally or remotely with free Prolon Focus software or through certain compatible digital room sensors.
Best For
- Variable volume and temperature (VVT) zoning systems using basic dampers without flow control
- Changeover bypass / VVT applications specified for the PL-VC3000LT-PD
- Standalone zone control or integration into a Modbus RTU or BACnet MS/TP network
- Damper shafts 0.25-0.75 in. (6-20 mm) in diameter, with at least 1.5 in. (37 mm) of usable shaft length
Warranty
Key Features
Basic VVT Damper Control
LT-PD hardware for VVT zoning systems using basic dampers without flow control. No built-in flow sensor.
Integrated Belimo Actuator
45 in-lb brushless actuator with Halomo® technology and electronic damper-position feedback.
Flexible Inputs and Outputs
Two universal inputs, one digital output and one configurable output. All outputs are protected with resettable fuses.
Modbus or BACnet
RS485 networking supports Modbus RTU or BACnet MS/TP on networks of up to 127 nodes.
Free Prolon Focus Software
Remote monitoring and configuration using complimentary Prolon Focus software.
Simple Connections
Detachable screw-type terminal blocks accept wire up to 16 AWG.
Technical Specifications
| Model | PL-VC3000LT-PD |
| Typical Application | Changeover bypass / VVT systems; basic dampers without flow control |
| Supply | 24 VAC ±10%, 50/60 Hz, Class 2 |
| Power | 2.0 VA typical consumption; 2.5 VA maximum consumption; 30 VA input at maximum rated specifications |
| Universal Inputs | 2; supported input signals: 0-10 / 2-10 VDC, 0-5 / 1-5 VDC, 4-20 mA, 10k thermistor and dry contact |
| Digital Output | 1 MOSFET 24 VAC output, 500 mA maximum, resettable fuse protected; ON/OFF or pulsed, heating or cooling |
| Configurable Output | 1; 0-10 VDC, 40 mA maximum, resettable fuse protected; modulating, ON/OFF, pulsed, or isolated dry-contact for 24 VAC, 500 mA |
| Built-in Flow Sensor | Not included on the LT-PD model |
| DC Power Output | Not provided on this model |
| Actuator | Belimo® with Halomo® technology; 45 in-lb |
| Minimum Damper Shaft Length | 1.5 in. (37 mm) |
| Damper Shaft Diameter Range | 0.25-0.75 in. (6-20 mm) |
| Communication | 1 RS485 network port for Modbus RTU or BACnet MS/TP, up to 127 nodes; 1 RS485 port for a digital sensor or computer interface |
| Baud Rates | 9600, 19200, 38400, 57600, 76800, 115200 |
| Connections | Removable screw-type terminal blocks; 16 AWG maximum |
| LED Indicators | Output state, communication, power and microprocessor status |
| Microprocessor | PIC18F67K40, 8 bits, 40 MHz, 128 KB FLASH memory |
| Casing | Molded ABS, UL94-HB |
| Dimensions | 4.6 x 5.0 x 3.0 in. (117 x 127 x 77 mm) |
| Weight | 1.02 lb (463 g) |
| Operating Environment | 32-122 °F (0-50 °C), non-condensing |
| Compliance | FCC CFR47, Part 15, Subpart B, Class A; Industry Canada ICES-003, Issue 5, CAN ICES-3(B)/NMB-3(B); RoHS Directive (2002/95/EC); EN 55032 Class A; EN 55035; EN 61000-3-2; EN 61000-3-3; EMC portions of IEC/EN 60730-1:2022/2024 |
| Country of Origin | Canada |
Documentation
Frequently Asked Questions
What is the PL-VC3000LT-PD used for?
The LT-PD model is intended for VVT zoning systems using basic dampers without flow control. The datasheet lists its typical application as changeover bypass / VVT systems.
Does this model include a built-in flow sensor?
No. The PL-VC3000LT-PD has no built-in flow sensor. It is intended for basic dampers without flow control. The LT-PI, LT-BP and FL-PI variants include a built-in sensor.
Does the PL-VC3000LT-PD support BACnet?
Yes. Its RS485 network port supports Modbus RTU or BACnet MS/TP, with up to 127 network nodes. A second RS485 port is provided for a digital sensor or computer interface.
What inputs and outputs are included?
Two universal inputs, one digital output and one configurable output. The LT-PD does not provide a DC power output.
What power supply is required?
24 VAC ±10%, 50/60 Hz, Class 2. Controller consumption is 2.0 VA typical and 2.5 VA maximum. The datasheet separately specifies 30 VA input at maximum rated specifications for the LT hardware.
How much torque does the integrated actuator produce?
The integrated Belimo actuator provides 45 in-lb of torque. It fits shafts 0.25-0.75 in. (6-20 mm) in diameter with a minimum usable shaft length of 1.5 in. (37 mm).
Can the controller operate standalone?
Yes. The VC3000 series supports standalone or networked operation. Monitoring and configuration are available through free Prolon Focus software or certain compatible digital room sensors.
- Controller Type:
- VAV Zone
- Digital Outputs:
- 1
- Analog Outputs:
- 1
- Inputs:
- 2
- Communication:
- Modbus RTU or BACnet MS/TP (RS485)
