GE VMIVME-2536 32-Channel Optically Coupled Digital I/O Board

GE VMIVME-2536 32-Channel Optically Coupled  Digital I/O Board

Features:

• 32 optically coupled outputs  

• 32 optically coupled inputs  

• High isolation potential  

– 1kV sustained  

– 35kV pulsed  

• 8-, 16-, 32-bit data transfers  

• Standard data or short I/O addressing A16 or A24  

• Voltage sensing or contact sensing inputs  

• Input ranges of 5 to 125VDC  

• 300mA current sinking outputs 

•Supports Built-in-Test for both inputs and outputs  

• 50V maximum output voltage 

Functional Characteristics

Board Function: This board has 32 optically coupled inputs and  32 optically coupled outputs. Both the outputs and inputs have  Built-in-Test capability and provide a sustained 1kV of system  isolation to the VME backplane.

Built–in-Test: The VMIVME-2536 supports both online and  offline Built-in-Test (BIT).Inputs are put into the test mode by setting a bit in the Control  and Status Register (CSR). While in the test mode, data placed in  onboard test registers are read through the input ports instead  of field data. The test registers are at the same address as the  input data ports, allowing testing to be achieved by simply  writing to and reading from the input data ports. This feature is  used for both online and offline testing.The contents of the Output Data Registers may be read at  anytime, thereby supporting online testing. The outputs may be  put into offline test mode by setting a bit in the CSR. In the offline  test mode, the open-collector outputs are all disabled. Data  patterns may then be written to and read from the Output  Registers for test purposes without affecting the outputs.

Input Characteristics

Input Configuration: The inputs can be voltage sensing or  contact sensing. Voltage sensing or contact sensing may be set  on byte boundaries. For contact sensing, a user-supplied SIP  resistor must be installed. External voltage or internal VME +5V  may be jumper-selected on byte boundaries to supply power for  contact sensing mode. Note the VME +5V is useful only with the  5V input option.

Input Voltage Options: The input voltage range is a  manufacturing option. The available ranges are 5, 12, 24, 28, 48,  and 125V. See Tables 1 through 5 for more detailed information  and please refer to the Ordering Options.

Input Isolation: 10MΩ, minimum

Contact Debounce: User-programmable debounce is available.  Debounce times are 0, .256, .512, 1.024, 2.048, 4.096, 8.192, and  16.384ms. Debounce defaults to 0 on reset.  

Output Characteristics

Output Configuration: The outputs are optically isolated with  open collector. The user may install a pull-up resistor on byte  boundaries. External voltage or internal VME +5V may be  jumper-selected on byte boundaries to supply power for pull-up  resistors.  

Output Leakage Current: 500μA maximum at VCE = 50V  and TA = 60°C

Output Voltage: 50V maximum

Physical/Environmental Specifications

Dimensions: 6U (4HP) single slot Eurocard form factor

Height: 9.2 in. (233.4mm)

Depth: 6.3 in. (160mm)

Thickness: 0.8 in. (20.3mm)

Temperature:Operating: 0 to +60° C

Storage: -55 to +85° C

Humidity: 20% to 80%, noncondensing

Power Requirements: +5VDC at 2.65A