Siemens ET 790 Series Información técnica descargar pdf (Pagina 119)

Devices for Special Applications

Heating, Cooling, Ventilation, Air-Conditioning

Sensors for HCVA

7/3

Siemens ET G1 · 10/2008

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Technical specifications

Type Description

N 258/02 N 258/02 temperature sensors

For four Pt1000 sensors

• For the measurement and transmission of 4 temperatures in the

range -40 ... +150 °C

• For connection of four Pt1000 temperature sensors, each over

an up to 50 m long 2-wire cable

• Configurable smoothing of a measured value through mean

value generation

• Monitoring of a lower and upper limit value for each measured

value, with configurable hysteresis for limit value signals

• Electronics powered over an integrated power supply unit for

230 V AC

• Green LED for displaying ready-to-run status

• Integrated bus coupling units

• Bus connection over bus terminal and contact system to

data rail

• Modular installation devices for mounting on

TH35 EN 60715 mounting rail

• Width: 4 MW (1 MW = 18 mm)

N 670 Universal N 670 I/O modules

2 x universal I/O, 2 inputs Pt1000, 2 relay outputs 230 V AC, 10 A

• 2 universal inputs/outputs, each adjustable as

- Analog input 0 V ... 10 V DC

- Analog output 0 V ... 10 V DC

- Binary input for 10 V DC

- Binary output for 10 V DC

• Analog input with limit value monitoring and signaling,

with adjustable limit values and hysteresis

• Analog output with adjustable lower and upper limit of the

output voltage with adjustable voltage value in the event of

bus voltage failure and recovery

• Binary input with pulse edge evaluation

• Binary output with adjustable switching position in the event of

bus voltage failure and recovery

• 2 inputs for the connection of temperature sensors with Pt1000

measured element for temperature measurement in the range

-25 °C ... +45 °C, with limit value monitoring and signaling,

with adjustable limit values and hysteresis

• 2 binary outputs, relay contacts rated for 230 V AC,

10 A at p.f. = 1, with

- Configurable actuated position (NO contact/NC contact)

- Positively driven operation

- Configurable switching position in the event of

bus voltage failure and recovery

• Electronics powered over an external power supply unit for

24 V AC/DC

• Integrated bus coupling units

• Bus connection over bus terminal and contact system to

data rail

• Modular installation devices for mounting on

TH35 EN 60715 mounting rail

• Width: 4 MW (1 MW = 18 mm)

AP 254/02 AP 254/02 dual sensors

Brightness measurement, temperature measurement,

sun protection control, lighting control

• For the detection and transmission of brightness and

temperature, temperature measuring range -25 °C ... +55 °C,

brightness measuring range 1 lux ... 100 kLux,

horizontal sensing angle -60° ... +60°, vertical -35° ... +66.5°

• For the control of switch, dimming and shutter/blind actuators,

depending on the ambient luminosity and/or ambient

temperature

• One sun protection channel for the automatic control of

sun protection equipment, with

- Starting and stopping of automation over an object or a dusk

threshold

- Up to three brightness thresholds for determining the height

and position of the shutters/blinds or roller shutters

- Optional teach-in of dusk thresholds and brightness

thresholds over a teach-in facility

- Locking object for the temporary deactivation of the

sun protection channel function

• Up to four universal channels for the control of switch, dimming

and shutter/blind actuators, depending on ambient luminosity

and/or temperature. Optionally available with:

- Threshold switches for brightness

- Threshold switches for temperature

- Threshold switches with logical combination of brightness

and temperature

- Optional teach-in of brightness threshold for each

universal channel over an associated teach-in facility

- Deactivation option for each universal channel over an

associated locking object (1 bit)

- Optional second object for transmission of a second

telegram on fulfillment of threshold conditions

• Electronics powered over bus voltage

• Integrated bus coupling units

• Bus connection via bus terminal

• Surface mounting

• Degree of protection, IP54

For selection and ordering data, see page 7/4.

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