LN-PRG4B-0

The Johnson Controls LN-PRG4B-0 controller is a free programmable controller from the Johnson Controls and Metasys LN series. It is an 8-point type of free programmable controller designed to offer precise control in HVAC applications. The LN-PRG4B-0 controller uses microprocessor technology and provides exceptional flexibility in various HVAC systems. Its I/O capacity includes 4 universal input points, 2 analog output points, and 2 digital output points. The LN-PRG4B-0 controller offers comprehensive control capabilities. It requires a power supply voltage rating of 24 VAC/DC, +/-15%, and it operates at a frequency of 50/60 Hz. It is protected by a 3-Amp replaceable fuse, and it must be powered by a Class 2 type of 24 VAC/DC power supply. This controller’s 2 digital outputs include jumper-selectable normally open (NO) or normally closed (NC) relay configurations. The LN-PRG4B-0 controller’s current consumption rating is 60 mA maximum at 12 VDC, and its maximum load capacity is 200 ohms. The LN-PRG4B-0 controller’s 4 universal inputs support different input types such as dry contact, thermistor, platinum RTD, and potentiometer input types. It encompasses precise temperature measurement ranges, resolutions, and accuracy levels for each input type. The LN-PRG4B-0 controller uses an STM32 32-bit processor, and it has a nonvolatile Flash memory capacity of 1 MB for applications and a storage Flash memory capacity of 2 MB. Communication is established via the LonTalk Protocol with a TP/FT-10 media channel operating at 78 kbps. Its rugged metal construction, compact dimensions, and weight of 0.97 lbs make it suitable for various industrial environments. The LN-PRG4B-0 controller incorporates status LEDs and meets the CSA and UL standards.