Dewetron EPAD2 Series User Manual

39
EPAD2/CPAD2/CPAD3 series modules • Technical Reference Manual • Printing version 1.0.2 • October 04, 2016
EPAD2/CPAD2-RTD8-L1B Module
8 channel Resistance Temperature Detector amplier
Amplier with integrated 24-bit A/D conversion
8 isolated Resistance Temperature Detector channels
RS-485 or CAN interface
Module specications
xPAD2-RTD8-L1B
Input channels 8 isolated Resistance Temperature Detector channels
Input ranges Resistor: 0 to 999.99Ohm
RTD: PT100(385); PT200(385); PT500(385); PT1000(385); PT2000(385); PT100(3961)
Accuracy Pt100 a = 0.00385 Pt100 a = 0.003916 Pt200 a = 0.00385
±0.25 °C @ -200 to 100 °C ±0.25 °C @ -200 to 100 °C ±0.25 °C @ -200 to 100 °C
±0.4 °C @ 100 to 400 °C ±0.4 °C @ 100 to 400 °C ±0.4 °C @ 100 to 400 °C
±0.8 °C @ 400 to 800 °C ±0.8 °C @ 400 to 800 °C ±0.5 °C @ 400 to 630 °C
Pt500 a = 0.00385 Pt1000 a = 0.00385 Pt2000 a = 0.00385
±0.25 °C @ -200 to 100 °C ±0.25 °C @ -200 to 100 °C ±0.25 °C @ -200 to 100 °C
±0.4 °C @ 100 to 250 °C ±0.4 °C @ 100 to 400 °C ±0.4 °C @ 100 to 200 °C
±0.8 °C @ 400 to 600 °C
Resistance accuracy 0.03 % of reading ±0.1 Ω
Sampling rate max. 12.5 S/sec per channel
Bandwidth (-3 dB) 6 Hz
ADC type
24 bit Delta Sigma Converter
Input connector ERA.1S.304
Connection type 2-wire, 4wire
Noise
typically 0.02 °C
Resolution 0.01 °C for all types
Constant current 400 µA
Input impedance typically >100 MΩ
Bias current
typically 10 nA
Sensor fault detection module indicates fullscale if input is open
Max. gain drift 25 ppm /°C
Max. offset drift 25 ppm of range /°C
Isolation voltage 350 V
DC
(channel to channel and channel to Bus, Power and Chassis)
Overvoltage protection 15 V
DC
CMRR (50/60 Hz) 130 dB
EPAD2-RTD8
Interface RS-485
Communication speed
9600 bps (2400 to 115200 programmable)
Standard settings 9600 bps, 8 data bits, 1 stop bit, no parity, module address 00 hex
Readout speed depending on baudrate and number of channels (typ. 80 ch/sec. @ 9600 bps)
CPAD2-RTD8
Interface highspeed CAN
Speci cation CAN 2.0B
Communication speed 50 kBaud to 1000 kBaud
Data format 16 bit Intel or Motorola
Identi er types standard; extended
Standard settings 500 kBaud; Intel Format
Readout speed 12.5 Hz, 10 Hz, 5 Hz, 2 Hz, 1 Hz, 0.5 Hz, 0.2 Hz or 0.1 Hz programmable
Bus/Power Connector
LEMO EGG.1B.304
Power Supply Voltage
7 to 40 V
Power consumption
typically 0.5 W
Dimensions
Base module (W x D x H)
Mounting holes distance
129 x 72 x 50.2 mm (5.1 x 2.8 x 2 in.) incl. mounting holes
119 x 7 mm (4.7 x 0.3 in.), 4.2 mm (0.165 in.) diameter
Weight
typical 420 g

Dewetron EPAD2 Series Specifications

General

Brand	Dewetron
Model	EPAD2 Series
Category	Control Unit
Language	English