OM5-BP-SKT-C ANALOG MODULE EVALUATION BOARD

DESCRIPTION

The OM5-BP-SKT-C is a single channel board with a test socket for OM5 module evaluation (Figure 19). All signal input/output, control, and power connections are connected to terminal blocks for ease of user access. A cold junction temperature sensor circuit is included for evaluation of thermo- couple modules. (See Figure 20 for schematic).

The OM5-BP-SKT-C is mechanically compatible with DIN rail mounting using the following elements:

2OM7-DIN-SF base elements with snap foot

2OM7-DIN-SE side elements

4OM7-DIN-CP connection pins

Two jumpers are provided for customer use. The first, J1, provides a current path between +5V Power Common (module pin 16) and I/O Common (module pin 19). A path must exist between the host control logic power common and module I/O Common for proper operation of the module output switch or track-and-hold circuit. If this connection exists elsewhere in the system, jumper J1 should be removed since possible ground loops could exist. Other connections of power ground and signal ground usually occur at the A/D or D/A converter of the host measurement system.

Jumper J2 is used in the cold junction compensation circuit. If it is installed, the compensation circuit is enabled and will provide the proper compensa- tion voltage to correct for the thermoelectric effect at the +In and –In screw terminals. If an external simulation voltage is desired for cold junction compensation, J2 should be removed. The external voltage is applied at the sockets labled CJC+ and CJC–. An external voltage of 510.0 mV corresponds to an ambient temperature of +25 °C. The transfer function of the onboard compensation circuit is VCJC = 0.510 –0.0025(T–25)V.

 

 

2.85"

 

0.25" (6.4mm) Typical

(72.4mm)

 

 

0.25"

 

(6.4mm)

 

Typical

 

 

Control

Local I/O

 

RD EN\

VOUT

 

WR EN\

I/O COM

 

Reserved

VIN

 

PCOM

I/O COM

 

TB1

TB2

 

+5V

J1

 

 

4.25"

PCOM

+

(108mm)

 

 

 

TB3

CJC

 

 

 

 

 

 

J2

 

 

OMX-1362-C

 

 

OMX-CJC-C

 

 

TB4

 

–EXC

+EXC

 

–In

+In

FIGURE 19. OM5-BP-SKT-C Evaluation Board Dimensions And Pin Layout.

TB1

23

TB2

22

RD EN\

21

 

20

 

WR EN\

19

 

18

 

Reserved

17

 

16

 

PCOM

OM5

PCOM

 

 

I/O COM

 

 

PCOM

6 +In

 

–In 5

 

 

4 +EXC

 

 

–EXC 3

J1

 

2 +SEN

+5

–SEN 1

 

 

 

TB3

 

PCOM

 

J2

+

 

 

PCOM

 

CJC

 

 

DZ1

LED

OMX-CJC-C

PCOM

OMX-1362-C

NOTES:

1.J1 and J2 are factory installed.

2.SCMXCJC is a CJC temperature sensor.

3. Resistor SCMXR1 is an optional I/V conversion

TB4

 

 

resistor for current inputs, not factory installed.

–EXC –In +In +EXC

VOUT

I/O COM

VIN

I/O COM

I/O COM

FIGURE 20. OM5-BP-SKT-C Evaluation Board Schematic.

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Image 30
Omega Vehicle Security OM5-C manual OM5-BP-SKT-C Analog Module Evaluation Board

OM5-C specifications

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