Siemens 125-1957 owner manual Hardware Outputs, Analog 0 to, Power Wiring, Communication Wiring

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Introduction

Hardware Outputs

Analog (0 to 10V)

•Cooling valve actuator

•Face-bypass damper actuator

•Heating valve actuator

•Outdoor air damper actuator

Digital

•Auxiliary radiation electric coil contact; or, auxiliary radiation two-position valve actuator

•Unit fan

•First stage electric heat

•Second stage electric heat

•Third stage electric heat

•Two-position cooling valve actuator

•Two-position heating valve actuator

•DX coil

Power Wiring

Application

2281, 2283, 2287 2281, 2283, 2284, 2286

2281, 2283, 2284, 2286, 2287 2281, 2283, 2284, 2286

Application

2281, 2283, 2284, 2286

2281, 2283, 2284, 2286, 2287 2281, 2283, 2284, 2286 2281, 2283, 2284, 2286 2281, 2283, 2284, 2286 2281, 2283, 2284, 2286 2281, 2283, 2284, 2286 2284, 2286, 2287

The controller is powered by 24 Vac and connects to the two screw terminals on the controller. Labeled “C” (Common) and “H” (Hot) on the terminal block labeled “24 VAC”. No earth-ground connection is required (Figure 2).

Communication Wiring

The controller connects to the field panel by means of a Floor Level Network (FLN) trunk. Communication wiring connects to the three screw terminals on the controller labeled “+” (positive), “-“ (negative), and “S” (Shield) (Figure 3).

Siemens Building Technologies, Inc.

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Contents 125-1957 Rev. CA, July Apogee Unit Vent Controller ⎯Page Service Statement Page Table of Contents Point Database Troubleshooting Table of Contents Manual Organization How To Use This ManualNotation Symbol Meaning Manual SymbolsManual Conventions Datamate SoftwareGetting Help Where To Send CommentsIntroduction Product OverviewOrdering Notes Standard ApplicationsAnalog Hardware InputsDigital Communication Wiring Power WiringHardware Outputs Analog 0 toTemperature Sensors Controller LED IndicatorsRoom Temperature Sensor Actuators Mixed Air/Discharge Air Temperature SensorDamper Actuators Valve ActuatorsDay/Night Mode Control Temperature SetpointsApplications Basic OperationHeating and Cooling Switchover Valve ConfigurationControl Loops ON/OFF Coil Valve Control Morning Warm-up/Cool-downElectric Heat Fan OperationBasic Operation Application 2281 Control Drawing Application 2281 Control Drawing Application 2281 Control Drawing Application 2283 Control Drawing Application 2283 Control Drawing Application 2283 Control Drawing Application 2284 Control Drawing Application 2284 Heating and DX Cooling, Ashrae Cycles IApplication 2284 Heating and DX Cooling, Ashrae Cycles I Application 2286 Control Drawing Application 2286 Heating and DX Cooling, Ashrae CycleApplication 2286 Heating and DX Cooling, Ashrae Cycle Overview Application 2287 Heating and Cooling Nesbitt Cycle WApplication 2287 Heating and Cooling Nesbitt Cycle W Application 2299 Slave Mode Descriptor Address Application Description Point DatabaseRM Stpt MIN Wall SwitchRM Stpt MAX RM Stpt DialNGT Ovrd Ovrd TimeAUX.NOAUX Free CLGAOV1START AOV1SPANAOV2 Span AOV2 StartEheat NGT CLG ModeEhea T FANOA Dmpr POS CLG OutputCLG P Gain CLG D GainSwitch Time Switch LimitMA Loopout OA LoopoutError Status Switch DbandNGT Dband Morn DbandBasic Service Information TroubleshootingOverview Preventive Maintenance Ordering Replacement PartsSafety Features Controller LEDsAlgorithm GlossaryCentralized control Control loopEquipment controller English unitsField panel InterceptSlave mode Override switchOn text Sl unitsUnbundle BST LED IndexDDC FLNTX LED RTS

125-1957 specifications

Siemens 125-1957, a notable creation of the German engineering giant Siemens, is recognized for its innovative design and advanced technology in the realm of electrical engineering. This model is emblematic of the mid-20th century's commitment to optimizing electrical machinery for industrial applications, contributing to enhanced productivity and efficiency.

One of the main features of the Siemens 125-1957 is its robust construction, designed to withstand the demanding environments of industrial settings. The body of the machine is built from high-grade materials, ensuring durability and longevity. It is also designed to minimize vibration and noise during operation, thus enhancing the user experience.

Technologically, the Siemens 125-1957 incorporates advanced electric motor technology, which provides reliable performance across a variety of applications. The motor is designed for high efficiency, allowing it to operate effectively under load while consuming less energy. This efficiency is crucial in industrial applications where operational costs are significant. The motor is also equipped with thermally protected windings, which prevent overheating and extend the service life of the equipment.

The 125-1957 model is characterized by its adaptability in various operational settings. It is compatible with a range of automation systems, making it a versatile choice for factories and production lines. Its design allows for easy integration with existing equipment, minimizing downtime during installation.

Moreover, the Siemens 125-1957 boasts a user-friendly interface, making it accessible for operators with varying levels of expertise. It comes with comprehensive safety features, including circuit protection and emergency stops, ensuring that it meets the strict industrial safety standards.

In summary, the Siemens 125-1957 represents a blend of robust design, advanced motor technology, and user-oriented features. With its energy-efficient performance and adaptability, it stands out as a key asset in industrial electrical engineering, demonstrating Siemens' commitment to innovation and quality in the manufacturing sector. This model continues to be relevant, supporting various industries in their pursuit of efficiency and reliability.
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