GE VMIVME-7696-650 Pentium II Processor-Based VMEbus Single-Board Computer

Features:

•1-Slot, B-size VMEbus Card

•High-Current Drivers (600 mA Sink)

•High Breakdown Voltage (55 V)

The VMIVME-2120 is capable of delivering 64 channels of high voltage and/or high current sink outputs.

The VMIVME-2120 open collector output drivers are capable of supporting output voltages from 5 VDC to 48 VDC. 

A unique feature of the VMIVME-2120 Board is the Built-in-Test (BIT) logic, which allows the user, under software control, to verify the operation of each channel.

INDUCTIVE LOAD DRIVER — Bifilar (unipolar) stepper motors can be driven directly. 

The internal kickback diodes prevent damage to the output transistors by suppressing the high-voltage spikes which occur when

turning OFF an inductive load.

FAULT CONDITIONS — In the event of a shortedload, shorted winding, or stalled motor, the load current will attempt to increase.

As described above, the drive current to the output stage is diverted (limiting the load current to about1 A), causing the output stage to go linear. As the junction

temperature of the output stage increases, the thermal limit circuit will become operational, further decreasing the drivecurrent.

The load current (junction temperature) is then a function of ambient temperature, state of remaining drivers,supply voltage, and load resistance.

If the fault condition is corrected, the output driver will return to its normal saturated condition. 

Short circuit protection is provided for each output for supply voltages up to 25 V.

PHYSICAL/ENVIRONMENTAL

Temperature Range: 0 to +55 °C, operating,-20 to +85 °C, storage

Humidity Range: 20 to 80 percent relative,noncondensing

Altitude: Operation to 10,000 ft

Cooling: Forced air convection

Dimensions: Double Eurocard (6U), 160 x 233.35 mm

Power Requirements: 3.0 A (typical) at 5 V

The user must supply power to the output drivers. 

This power requirement is determined by the user load.

Connections can be made at either the front panel (P3 or P4) or at P2. 

To facilitate connections made at P2, VMIC offers the VMIACC-0132 P2 Power Accessory which is recommended, but not required.

MTBF: 162,900 hours (217F)

Warning: The user-supplied voltage should not be applied to the board unless +5 VDC is present on the board.

Introduction

The ACC-0603RC is a Rear Transition Module (RTM), designed to transition the

V7865 I/O signals from the VME P2 connector to standard I/O connectors.

The panel I/O access provides:

• One serial port connector (DB9), supporting both RS232 and RS422

• Two standard USB 2.0 connectors

• Digital Visual Interface-Digital (DVI-D) video support

• One Serial ATA (SATA) connector

The onboard I/O access provides:

• One PIM I/O interface

• One SATA connector

See Figure 1-1 on page 12 for an illustration of the board and connector layout.

The VME P2 connector carries all associated signals. All signals are routed from the

single board computer (SBC) (installed in the front of the chassis) through the

backplane to the ACC-0603RC P2 connector. Figure 1-2 on page 13 is an illustration of

the ACC-0603RC installed in the VME rear I/O.

Output Drivers: The output drivers provide the user with thermal and inrush current shutdown protection.

The inrush current protection will allow up to 990 mA of surge current before shutting down the driver. 

This current is determined by the type and number of bulbs used. 

For example, two 40 mA 28 V filament bulbs may have as much as 960 mA ((40 mA x 2) x 12 = 960 mA)

of cold filament inrush current. 

• 128 bits of high-voltage outputs

• High-current drivers (600 mA sink)

• Automatic surge current shutdown protection

• Thermal shutdown protection

• High breakdown voltage (55 V)

• Output clamp diodes for inductive flyback protection

• Compatible with Intelligent I/O Controllers

• Built-in-Test logic for fault isolation

• VMEbus compatible (ANSI/IEEE STD 1014-1987 IEC 821 and 297)

• A24:A16:D32/D16/D08 (EO): slave 39/3D:29/2D:6U form factor

• Optional pull-up resistors for electronic switch outputs

• Front panel with fail LED

• Sockets are provided for warming resistors, which are supplied by the user

We have the same series of models in stock.  If you don't find the model you need, please contact us and we will provide you with an official quotation！

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