Siemens 540-110 | Siemens Unit Conditioner Controller with Electronic Output

Description The Siemens 540-110 is a Unit Conditioner/Terminal Equipment Controller from the System 600 series, designed for precise HVAC zone control in commercial building automation. Featuring electronic output and multiple input/output capabilities, this controller provides reliable and efficient temperature management through local or remote communication. Technical Specifications Condition New/Never Used Surplus Brand Siemens Category Safety Control Systems Part Number 540-110 Subcatecory Safety Control Devices Series Siemens System 600 Input Voltage 24 VAC, 50/60 Hz Power Consumption 60 VA max 24 VAC Inputs 1 Room Temp Sensor, 1 Setpoint (optional), 1 Aux Temp, 2 Dry Contacts Outputs 6 DO, 24 VAC Optically Isolated Solid-State (0.5 A / 0.25 A) Controlled Temp Accuracy ±1.5°F (±0.9°C) Operating Temperature 32°F to 122°F (0°C to 50°C) Storage Temperature –13°F to 158°F (–25°C to 70°C) Humidity Range 5%–95% RH, non-condensing Dimensions (W x L x H) 4-1/8" x 7-3/4" x 1-1/2" (105 x 197 x 38 mm) Weight 3 lbs (1.35 kg) Information About 540-110 The 540-110 is a System 600 HVAC controller designed to operate on 24 VAC at 50/60 Hz, with a power consumption of up to 60 VA. It offers 6 digital outputs (DO) using optically isolated solid-state switches, each rated for 0.5 A at 24 VAC (0.25 A in smoke control applications). Input support includes 1 room temperature sensor, 1 optional setpoint, 1 auxiliary temperature sensor, and 2 dry contacts, allowing flexible control configurations. Key Features: Electronic Output Control: Solid-state digital output design supports precise actuator switching. 6 DO Outputs: Optically isolated solid-state switches rated at 0.5 A (or 0.25 A for smoke control). Multi-Sensor Input Support: Room temp sensor, auxiliary sensor, optional setpoint, and dry contact inputs. Flexible Communication: Supports FLN Trunk and WCIS protocols for integration with Siemens building systems. High Accuracy: Maintains ±1.5°F (±0.9°C) heating/cooling control precision. Robust Operating Range: Operates in temperatures from 32°F to 122°F (0°C to 50°C), with wide storage tolerance. Compact and Durable: Space-efficient housing for wall or panel mounting in commercial HVAC environments. The Siemens 540-110 is ideal for zone-level control of HVAC systems in commercial facilities requiring both accuracy and networked integration.