User's Manual

ManualsBrandsSiemens ManualsUniversal RemoteSiemens compact universal controllers

CC1N7865en

01.09.2005

Building Technologies

HVAC Products

865

Compact

Universal Controllers

RWF40...

The RWF40... is a universal digital boiler temperature / pressure controller with

functions designed specifically for the control of heat generating plant.

The RWF40... and this Data Sheet are intended for use by OEMs which integrate

the controller in their products!

Mechanical design

The controller is supplied complete with housing for flush panel mounting. The

RWF40... is matched to the controlled variable and the required setpoint range by mak-

ing parameter settings. The control parameters can be set and optimized while the

burner is running. All settings are made with 4 buttons located on the unit front and are

directly displayed.

LEDs on the front indicate the following operating states:

- Control ON / OFF

- Positioning pulses ON or OFF for driving the burner´s air damper when using

modulating burner control, or stage I / stage II when using 2-stage burner control

- «2-stage» operating mode

- Position of the configurable contact «K6»

- Manual control ON / OFF

During operation, the digital display above the LEDs shows the setpoint (green), the

actual value (red) and – when making parameter settings – the relevant parameters.

RWF40... complete with housing

Summary of content (10 pages)

PAGE 1
7 865 RWF40... complete with housing Compact Universal Controllers RWF40... The RWF40... is a universal digital boiler temperature / pressure controller with functions designed specifically for the control of heat generating plant. The RWF40... and this Data Sheet are intended for use by OEMs which integrate the controller in their products! Mechanical design The controller is supplied complete with housing for flush panel mounting. The RWF40...
PAGE 2
Warning notes To avoid injury to persons, damage to property or the environment, the following warning notes should be observed! Do not open, interfere with or modify the controller! • • • • • All activities (mounting, installation and service work, etc.
PAGE 3
Type summary Controller with 3-position output housing fixing material and seal RWF40.000A97 Controller with 3-position output analog output housing fixing material and seal RWF40.001A97 Controller with 3-position output analog output RS-485 port housing fixing material and seal RWF40.002B97 Packaging variants (20 pieces, without documentation) RWF40.010A97 RWF40.011A97 Accessories Adapter frame for replacing the RWF32... Bracket For mounting the RWF40...
PAGE 4
Technical data General controller data Environmental conditions Mains voltage Mains frequency Safety class Mounting position Terminals for Power consumption Safety extra low-voltage Contact rating of the control outputs (relays «K1...K3») Up to 2 x 105 switching cycles Up to 107 switching cycles Weight complete with housing Recommended actuator running time Degree of protection of housing Front Base AC 110...240 V +10 % / -10 % 48...63 Hz II to DIN 0631 optional 2 x 1.5 mm² or 1 x 2.5 mm² max.
PAGE 5
Function The RWF40... provides the following functions: One digital PID controller with a 3-position or analog output (optional) To control 2-stage burners, the RWF40...
PAGE 6
Function of the controller when used for burner control Low-fire operation In low-fire operation, the RWF40... operates like a control thermostat or pressurestat. This means that it operates as a 2-position controller maintaining the required setpoint by switching the burner on and off. The switching differential for 2-position operation can be adjusted within a wide range. If the demand for heat increases, the controller switches to high-fire operation only when an adjustable limit is exceeded.
PAGE 7
Function of the controller when used for burner control (cont´d) Analog input 1 (actual value sensor) To acquire the actual value, a number of sensors can be connected to the RWF40... Measurement range 2-or 3-wire resistance sensors Thermocouples Linearized standard signals Pt100 / IEC 751 -200...+850 °C (-328...+1562 °F) Pt1000 / IEC 751 -200...+850 °C (-328...+1562 °F) Ni100 / DIN 43760 -60...+230 °C (-76...+482 °F) Ni1000 / DIN 43760 -60...+230 °C (-76...+482 °F) LG-Ni1000 -50...
PAGE 8
Connection diagram (basic diagram) Temperature and pressure control on a dual-fuel burner. Burner control and supervision are provided by burner control type LAL... or LFL... Note DC 24 V at terminals «G+» and «G-» is used for powering the QBE... pressure sensor! RWF40... L N G1+ M1 B9 M9 XB6 M6 Q13 Q14 Y2 Q D1 GND D2 Y1 LAL..., LFL... 4 5 ST B M B QAE... M int. ext. 19 18 9 11 10 20 S1 BS 102 QAC... M R BV1 LK BSG... a v N z m M ~ 0 GAS SQ... MIN.
PAGE 9
Dimensions PGM 96 K6 91,5 Dimensions in mm 48 EXIT RWF40 112 43,5 Panel cutout to DIN 43 700 92 +0,8 7865m01e/0300 15,5 127,5 45 +0,6 ARG40 adapter frame 7865m02/0799 9/10 Building Technologies HVAC Products CC1N7865en 01.09.
PAGE 10
Dimensions (cont´d) Dimensions in mm ARG41 83 10/10 Building Technologies HVAC Products 7,5 13 61,4 45 68 60 3 35,5 45 8 94 153 12,5 7865m04/1004 © 2005 Siemens Building Technologies Production GmbH Subject to change! CC1N7865en 01.09.