Siemens 125-1957 Ovrd Time, NGT Ovrd, Aux.Noaux, Free CLG, LOW Temp DET, DX Cooling, Elec.Noelec

Page 35

Application 2299 – Slave Mode

Descriptor

Address

Application

Description

 

 

 

 

OVRD TIME

20

2281, 2283,

The amount of time (in hours) that the controller will operate in

 

 

2284, 2286,

day mode, when the override switch is pressed, while the

 

 

2287

controller is in night mode.

 

 

 

 

NGT OVRD

21

2281, 2283,

Indicates the mode that the controller is operating in with

 

 

2284, 2286,

respect to the override switch. NIGHT indicates that the switch

 

 

2287

has not been pressed and the override timer is not active. DAY

 

 

 

indicates that the switch has been pressed and the override

 

 

 

timer is active. The controller then uses a day mode

 

 

 

temperature setpoint. This point is only in effect when DAY.NGT

 

 

 

(Point 29) indicates night mode.

 

 

 

 

AUX.NOAUX

22

2281, 2283,

AUX indicates that auxiliary radiation is available. NOAUX

 

 

2284, 2286

indicates that auxiliary radiation is not available.

 

 

 

Valid input: AUX or NOAUX

 

 

 

 

FREE CLG

23

2281, 2283,

Point commanded by the field panel PPCL to enable or disable

 

 

2284, 2286,

mixed air damper modulation (free cooling).

 

 

2287

 

 

 

 

 

Dl 2

24

2281, 2283,

Actual status of a contact connected to the controller at DI 2.

 

 

2284, 2286,

ON indicates that the contact is closed; OFF indicates that the

 

 

2287, 2299

contact is open. If a wall switch is used, it is connected to DI 2.

 

 

 

Refer to WALL SWITCH (Point 18).

 

 

 

 

DI 3

25

2281, 2283,

Actual status of a contact connected to the controller at Al 3/Dl

 

 

2284, 2286,

3. ON indicates that the contact is closed; OFF indicates that

 

 

2287, 2299

the contact is open. When a contact is connected at DI 3, Al 3 is

 

 

 

not available. Refer to AUX TEMP (Point15).

 

 

 

 

DI 4

26

2299

Actual status of a contact connected to the controller. ON

 

 

 

indicates that the contact is closed; OFF indicates that the

 

 

 

contact is open.

LOW TEMP DET

26

2281, 2283,

Actual status of the low temperature alarm, which is determined,

 

 

2284, 2286,

by the current status of the low temperature detection thermostat.

 

 

2287

ON indicates that a low temperature has been detected. OFF

 

 

 

indicates a normal condition.

 

 

 

 

DX COOLING

27

2287

YES indicates a DX coil is used in cooling mode. NO indicates a

 

 

 

chilled water valve is used in cooling mode.

 

 

 

Valid input: YES or NO

ELEC.NOELEC

27

2281, 2283,

Indicates whether electric heating is being used.

 

 

2284, 2286

Valid input: ELEC or NOELEC

 

 

 

 

FBP.2PSVCTL

28

2281, 2283,

ENABLE allows two-position valves to close when the face-

 

 

2284, 2286

bypass damper has been closed (to full-bypass) for 2 minutes.

 

 

 

DISABL disables the feature.

 

 

 

Valid input: ENABLE or DISABL

 

 

 

 

DAY.NGT

29

2281, 2283,

Indicates the mode in which the controller is operating. Day

 

 

2284, 2286,

temperature setpoints will be used in day mode. Night

 

 

2287, 2299

temperature setpoints will be used in night mode. This point is

 

 

 

normally set by the field panel.

WRMUP.COOLDN

30

2281, 2283,

This point indicates whether or not the unit is currently in warm-

 

 

2284, 2286,

up/cool-down. ON indicates the unit is in warm-up/cool down.

 

 

2287

OFF indicates the unit is not in warm-up/cool-down.

 

 

 

 

Siemens Building Technologies, Inc.

25

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Page 34 Page 36
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 ManualDatamate Software Manual SymbolsNotation Symbol Meaning Manual ConventionsGetting Help Where To Send CommentsStandard Applications Product OverviewIntroduction Ordering NotesDigital Hardware InputsAnalog Analog 0 to Power WiringCommunication Wiring Hardware OutputsRoom Temperature Sensor Controller LED IndicatorsTemperature Sensors Valve Actuators Mixed Air/Discharge Air Temperature SensorActuators Damper ActuatorsBasic Operation Control Temperature SetpointsDay/Night Mode ApplicationsControl Loops Valve ConfigurationHeating and Cooling Switchover Fan Operation Morning Warm-up/Cool-downON/OFF Coil Valve Control Electric HeatBasic 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 Dial Wall SwitchRM Stpt MIN RM Stpt MAXFree CLG Ovrd TimeNGT Ovrd AUX.NOAUXAOV2 Start AOV1SPANAOV1START AOV2 SpanFAN NGT CLG ModeEheat Ehea TCLG D Gain CLG OutputOA Dmpr POS CLG P GainOA Loopout Switch LimitSwitch Time MA LoopoutMorn Dband Switch DbandError Status NGT DbandOverview TroubleshootingBasic Service Information Controller LEDs Ordering Replacement PartsPreventive Maintenance Safety FeaturesControl loop GlossaryAlgorithm Centralized controlIntercept English unitsEquipment controller Field panelSl units Override switchSlave mode On textUnbundle FLN IndexBST LED DDCTX 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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