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Siemens RWF40.001A97 User Manual

Siemens RWF40.001A97
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RWF40...
Compact Universal Controllers
optimized for temperature and pressure control in connection with modulating or multistage burners
User Manual
The RWF40... controller and this User Manual are intended for use by OEMs which integrate the controller into
their products!
CC1B7865en
05.12.2002
Siemens Building Technologies
HVAC Products

Table of Contents

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Siemens RWF40.001A97 Specifications

General IconGeneral
BrandSiemens
ModelRWF40.001A97
CategoryController
LanguageEnglish

Summary

Electrical connections

Installation notes

Covers safety, fusing, and interference suppression for electrical connections.

Assignment of terminals

Details terminal numbers and connection diagrams for controller outputs.

Operating modes

Low-fire operation

Explains control for low-heat output from the burner.

Modulating burner, analog output

Explains operation with a modulating burner using an analog output.

2-stage burner, analog output

Details operation for a 2-stage burner with an analog output.

Setpoint changeover SP1/SP2, analog shift

Describes setpoint selection and modification using analog signals.

Setpoint changeover SP1 / external setpoint

Details switching between SP1 and an external setpoint source.

Setpoint SP1, analog/binary shift

Explains analog and binary signal influence on setpoint SP1.

External setpoint, binary setpoint shift

Describes how binary signals can shift an external setpoint.

High-fire operation

Describes operation for continuous high-heat demand.

2-stage burner, floating output

Describes operation for a 2-stage burner with a floating output.

Safety shutdown

Covers automatic safety shutdown procedures triggered by sensor failures.

Modulating burner, floating output

Details operation with a modulating burner using a floating output.

Parameter settings

Limit value for limit comparator

Sets the threshold for the limit comparator function.

Configuration

C111 inputs

Configuration of analog and binary inputs for sensor and signal types.

C112 limit comparator, controller type, SP1, locking

Configures limit comparator functions, controller type, and setpoint options.

C113 instrument address, units, out-of-range

Sets unit address, decimal place, units, and out-of-range signal behavior.

SCL scaling analog input 1 start

Defines the start point of the analog input 1 signal range.

SCH2 scaling analog input 2 end

Defines the end point of the analog input 2 signal range.

SCH scaling analog input 1 end

Defines the end point of the analog input 1 signal range.

SCL2 scaling analog input 2 start

Defines the start point of the analog input 2 signal range.

Self-setting function

Self-setting function in high-fire operation

Explains the automatic tuning process for PID/PI controllers.

What to do if ...

...numbers are flashing on the display

Troubleshooting guide for error indications related to measured value acquisition.

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