I/O-Modules
Fox Series
MAI-4, Analog Input Sub module

Product Description

The MAI-4 input module is a submodule, which is galvanically decoupled by means of optocouplers, for the base module. It provides four analog inputs.

For operation in the I/O system, you can install up to four MAI-4s in the four slots of a base module. This makes possible a maximum of 16 outputs per base module. In addition, you can combine MAI-4s with different modules, e.g. digital outputs.

Two variants of the MAI-4 module can be supplied:

  • MAI-4 12 12 -bit resolution

  • MAI-4 16 16 -bit resolution

 
Setting Options

  1. Bipolar -10V...+10V (default setting) or unipolar  0V...+5V (optional)

  2. Shunts (preset option at factory)
    Example 0..20mA:         R = U/I = 5V / 20 mA = 250 Ohm
                                        Range setting unipolar 0..5V:
                                        0 mA = 0000H, 20 mA = FFFFH

  3. 2 potentiometers to set the gain and the offset (preset at factory)

 

Technical data

 MAI-4

Inputs

 Four analog inputs, galvanically decoupled

Input Levels

 Input voltage:     - 10V ... +10V bipolar
Input voltage:     0..5V unipolar
Input current:     0 .. 20 mA
Shunts:            customer specific

Decoupling

 Submodule is  galvanically separated by optocoupler to the basic module

Resolution

 MAI-4 12: 12 bit,  MAI-4 16:  16 bit

Sampling Rate

 Maximum : 1000 Hz

Supply Voltage

 24 VDC  (± 20%)
Current Consumption 0.05 A  (without load and input currents)
Housing Module with front panel is mounted in the CNX21 using two screws

Dimensions (WxHxD)

 58 * 72 * 50 mm

Weight approx.

 100 g

Operating temperature

 0°C ... +55°C

Storage temperature

 -20°C ... +70°C
 

Signal Description

Pin  

 Signal I/O Description
L-1 Ref V Out

Not available
L-2 +12 V V Out

+12 VDC voltage source
L-3 -12 V Gnd

-12 VDC voltage source
L-4 Gnd In Ground for pins L1 .. L3
L-5 AIn1+ In Analog input, channel 1 positive 
L-6 AIn1- In Analog input, channel 1 negative 
L-7 Gnd1 In Ground for channel 1
L-8 AIn2+ In Analog input, channel 2 positive 
L-9 AIn2- In Analog input, channel 2 negative  
L-10 Gnd2 In Ground for channel 2  
    
R-1 Ref   Not available
R-2 +12 V V Out

+12 VDC voltage source
R-3 -12 V V Out

-12 VDC voltage source
R-4 Gnd Gnd Ground for pins L1 .. L3
R-5 AIn3+ In Analog input, channel 3 positive 
R-6 AIn3- In Analog input, channel 3 negative 
R-7 Gnd3 In Ground for channel 3
R-8 AIn4+ In Analog input, channel 4 positive 
R-9 AIn4- In Analog input, channel 4 negative
R-10 Gnd4 In  Ground for channel 4

Pin designations: L = left-hand row      R = right-hand row      

 

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Copyright © 2000 TRS Fieldbus Systems, Inc. All rights reserved.
Revised: August 07, 2000 .