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Rwf40 – Beckett RWF40 Instructions User Manual

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Building Technologies

CC1N7865en

HVAC Products

01.09.2005

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... can be switched over to provide 2-
position control

-

Automatic thermostat (or pressurestat) function in low-fire operation

-

One shift controller for weather-dependent setpoint shifting

-

One minimum limiter and one maximum limiter for the boiler temperature or the
boiler pressure

-

One limit thermostat to DIN 3440 (output 1)

-

One potential-free configurable contact

-

Manual operating mode

-

Communication via serial port (option)

-

Self-setting function

3 analog inputs

2 binary inputs

Power supply

Serial port (optional)

Release of burner

Floating output

Limit comparator

Analog output (optional)

Power supply measuring transducer

RWF40...

7865f01e/0905

Input 1:
Actual value
for Pt100, Ni100, Pt1000,
LG-Ni1000,
thermocouples
or standard signals

Input 2:
External setpoint,
setpoint shifting
for 0...1 k resistor
or linearized
standard signals

Input 3:
Outside temperature
for Pt1000, LG-Ni1000

For potential-free
contacts

Input 1:
Operating mode changeover

Input 2:
Setpoint shifting /
changeover

Output 1:
- Relay (N.O. contact)

Output 2:
-Relay (actuating device open)

Output 3:
- Relay (actuating device closed)

Output 4:
- Relay (N.O. contact)

DC 24 V, 30 mA
(short-circuit proof)

Output 5:
Analog output
DC 0...10 V, DC 0...20 mA,
DC 4...20 mA

RS-485
MOD bus protocol

AC 110 ...240 V +10%/-10%,
48...63 Hz, max. 10 VA

Block structure