Dewetron EPAD2 Series - EPAD2;CPAD2-LA8-L1 B Module; Module Specifications

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EPAD2/CPAD2/CPAD3 series modules • Technical Reference Manual • Printing version 1.0.2 • October 04, 2016
EPAD2/CPAD2-LA8-L1B Module
8 channel high precision amplier for 4 to 20 mA sensors
Intelligent amplier with integrated 24-bit A/D conversion
8 galvanically isolated input channels
RS-485 or CAN interface
Module specications
xPAD2-LA8-L1B
Input channels 8 isolated current inputs
Input range
0 to 20 mA, ±20 mA; ±30 mA
Accuracy 0.03 % of reading ±0.3 µA
Sampling rate max. 12.5 S/sec per channel
Bandwidth (-3 dB) 6 Hz
ADC type
24 bit Delta Sigma Converter
Input connector LEMO EGB.1B.304
Resolution 0.3 µA
Input impedance
50 Ω 0.1 %
Max. gain drift 23 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)
Overcurrent protection 70 mA continuous
CMRR (50/60 Hz)
130 dB
EPAD2-TH8-P
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-TH8-P
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
max. 0.5 W
Dimensions
Base module (W x D x H)
Mounting holes distance
129 x 72 x 34.2 mm (5.1 x 2.8 x 1.3 in.) incl. mounting holes
119 x 7 mm (4.7 x 0.3 in.), 4.2 mm (0.165 in.) diameter
Weight
typical 360 g