Quatech INTERBUS S manual Technical Data

Technical Data:

Item Number 750-

Number of inputs

Input current (internal)

Voltage supply

Sensor types

Wire connection

Temperature range

Resolution

Isolation DC/DC

Measuring current

Bit width per channel

Configuration

Operating temperature

Wire connection

Dimensions (mm)WxHxL

Presetting

461, 481, 461/000-002, 461/000-003

2

65 mA

via system voltage

PT100, PT 200, PT 500, PT1000, Ni100, Ni120, Ni1000

2-conductor, 3-conductor (presetting)

PT: -200°C..+850°C Ni:-60°C...250°C

0.1°C over the whole area

400V system / power supply

0.5mA type

16 bits: data; 8 bits: control/status

none, optional via software parameter

0°C....+55°C

CAGE CLAMP; 0.08 to 2.5mm2

12 x 64* x 100 (*from upper edge of the carrier rail)

3-conductor PT100

The function module 750-461 allows the direct connection of PT- or Ni-resistance sensors. The module is suitable for 2- or 3-wire RTDs. Connection is made according to the above wiring diagram.

Linearization is accomplished over the entire measurement range by a microprocessor. The temperature ranges of the above listed RTD types is available to the user. The temperature ranges of the sensors are represented with a resolution of 1 bit per 0.1° C in one word (16 bits). Resulting from this, 0°C corresponds to the hexadecimal value 0000 and 100°C is 03E8 (dez.1000). Temperatures below 0° are represented in two’s complement with a leading ‘1’.

The function module works in the defined temperature range for the PT100 sensors of -200°C to +850°C. The voltage resolution is represented with 16 bits. An A/D converter and processor converts the voltage value to a numerical value proportional to the temperature of the selected resistance temperature sensor.

A short circuit or an interruption of the RTD wire is transmitted to the bus module and indicated by the red error LED. The green LED identifies that the module is communicating properly with the connected Buscoupler.

Input￿￿￿￿￿￿￿￿for PT100 750-461, 481 2

￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿:$*2Ç,￿2Ç6<67(0