Jäger ADwin-Pro, System And Hardware Description

Page: 50 / 218

Pro I: Analog Input Modules
Pro-AIn-32/12 Rev. A
ADwin
46
ADwin-Pro Hardware, manual version 2.9, June 2006
5.5.4 Pro-AIn-32/12 Rev. A
To this module you find an improved successor module Pro-AIn-32/14 Rev. A
(see page 53 ).
The analog input module Pro-AIn-32/12 Rev. A is equipped with a 12-bit ADC
and a programmable amplifier. It has 32 single-ended or 16 differential inputs
(software-selectable). The inputs are connected to a 37-pin DSub socket. The
Pro-AIn-32/12 module offers options for combination with thermocouples and
PTC-modules. The input voltage range of the ADC can be adjusted by jumpers
(see
page 47 ).
Fig. 67 – Pro-AIn-32/12 Rev. A : Block diagram
After power up the module Pro-AIn-32/12 is set to 16 differential inputs.
The figures 69 and 70 show the pin assignment of the module. Please consider
the different pin assignment for differential and single-ended inputs.
ADwi
n
-Pro
bus
A
D
1
100k
100k
2
100k
100k
32
100k
100k
. . . . . . . . .
Addr.
Data
Data
Register
Address
Decoder
Data
PGA
Vu= 1, 2, 4, 8
3
4
31
.
. . . . . . . .
MUX
Input channels 32 single-ended oder 16 differential
Resolution 12 bit
Conversion time max. 8.5µs
Sampling rate max. 117ksps
Measurement ranges 0…10V, ±5V, ±10V
optional 0-20mA / 16 channels
Gain 1, 2, 4, 8 software selectable
Accuracy INL max. ±1 LSB
DNL max. ±1 LSB
Input resistance 100k
Ω
, ±2%
Input over-voltage ±25V (peak ±35V)
Offset error adjustable
Offset drift ±30 ppm/ºC of full scale range
Connector 37-pin DSub socket
Fig. 68 – Pro-AIn-32/12 Rev. A : Specification