Siemens compact universal controllers Uživatelský manuál stáhnout pdf (Strana 5)

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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

Ω

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

1 2 3 4 5 6 7 8 9 10

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