GE Fanuc Automation VMIVME-4140 32-Channel 12-bit Analog Output Board

GE Fanuc Automation VMIVME-4140 32-Channel 12-bit Analog Output Board

Core functions and features

Channel and Accuracy Configuration: Equipped with 32 analog output channels (adjustable to 16 channels through ordering options), each channel is equipped with an independent 12 bit D/A converter (DAC) to ensure output accuracy; Support software selection of unipolar (0 to+2.5V, 0 to+5V, 0 to+10V) or bipolar (± 2.5V, ± 5V, ± 10V) voltage range to meet different application requirements.

Output performance: The maximum output current of a single channel is ± 10mA, with an output impedance of<0.8 Ω in online mode and>10 Ω in offline mode; Equipped with output short-circuit protection function, it can withstand infinite short circuits to ground and withstand ± 25V transient overvoltage (lasting for 1 second), ensuring equipment safety.

Update and Calibration Mechanism: Supports random update (non scanning) mode, with dual buffering design for output, which can be triggered by software or external synchronization signals for updates; No manual calibration is required, only a reference potentiometer, system reset or software instructions are needed to initiate automatic calibration. After calibration, an offset and gain coefficient table containing 32 channels in 6 voltage ranges will be generated and stored in RAM for output adjustment.

Self check and diagnosis: After the system is reset, the self check program will automatically run, and the self check register can provide feedback on the results (success/failure) and fault channel information; The output can be disconnected from the on-site wiring to achieve offline self-test, while the onboard rich diagnostic testing functions are convenient for troubleshooting.

Front panel design: equipped with status LED indicator lights (lit after reset, turned off after successful self check and automatic calibration, can be controlled by software switch); Provide analog output connectors, reference voltage access interfaces (with isolated BNC connectors and adjustment functions), and external synchronous signal connectors for convenient operation and monitoring.

Technical parameters

（1） Functional characteristic parameters

Specific content of parameter category

Conversion and precision differential nonlinearity up to 0.030% range (monotonic over the entire operating temperature range); The maximum range of integral nonlinearity is 0.030% (refer to the best fitting line); Initial accuracy (+25 ℃): gain error ± 0.03% set value ± 0.025% range ± 1.5mV, offset error is calculated using the same logic as the gain error

Stability temperature drift: ± 35ppm set value ± 25ppm range ± 30 μ V/℃ (maximum); Long term drift: ± 45ppm set value ± 30ppm range ± 50 μ V/1000 hours (maximum)

Noise and interference output noise (3 σ standard deviation): maximum 4mV peak to peak value in the 10Hz-10kHz frequency band, maximum 30mV peak to peak value in the 10Hz-20MHz frequency band (excluding jump and channel switching noise); Channel crosstalk suppression: minimum 70dB in DC-1kHz frequency band

Response speed establishment time (0.01% accuracy): 18 μ s for full-scale step and 12 μ s for half scale step; Data jump pulse: maximum 5 μ V · s; channel switching pulse: maximum 1 μ V · s

Bus and access are compatible with the VMEbus specification (ANSI/IEEE STD 1014-1987 IEC 821 and 297), supporting A32/A24/A16 address modes and D16, D08 (EO) data access; The maximum write access time is 500ns (data transmission rate<200kHz), and the minimum sustainable VMEbus data transmission rate is 200kHz; The base address is set through jumper wires, occupying 128 bytes of contiguous address space

（2） Physical and environmental parameters

Specific content of parameter category

Size 6U single slot Eurocard version: Height 233.4mm (9.2 inches), Depth 160mm (6.3 inches), Thickness 20.3mm (0.8 inches)

Maximum weight 0.7kg

Temperature range: working temperature 0-+65 ℃, storage temperature -25-+85 ℃

Humidity 20% -80% relative humidity (without condensation)

Cooling method relies on forced air cooling of VMEbus chassis

Power demand+5VDC power supply, maximum current 4.0A (output at full load)

Maximum altitude of 3000m (working environment)

Mean Time Between Failures (MTBF) 107400 hours (according to 217F standard)

External trigger polarity programmable; The voltage level is TTL standard (VIH=2.0V, VIL=0.8V); Minimum pulse width of 1 μ s, can be connected through the front panel BNC connector or VMEbus P2 connector

Ordering Options and Accessories

（1） Order Code Rules

The order model format is "VMIVME-4140- A B C D E F", with each letter representing a different configuration. The specific meanings are as follows:

A: Reserved options (currently fixed at 0 for future expansion)

B: Output connector type (0=discrete wiring type, 1=IDC lumped terminal type)

C: Number of channels (0=32 channels, 1=16 channels)

D. E: Reserved options (currently fixed at 0)

F: Normal coating (0=standard VME front panel without coating, 1=reserved, 2=standard VME front panel with coating)

（2） Matching connectors and tools

Connector type, model/specification

IDC output connector matching cable connector: Panduit 120-964-435; Strain relief: Panduit 100-000-072; PCB I/O connector: Panduit 120-964-033A