Name: VMIVME-4150 6U VMEbus 12-Channel Isolated 12-Bit Analog Output Module - MASSIVE
Brand: General Electric

Description

VMIVME-4150 6U VMEbus 12-Channel Isolated 12-Bit Analog Output Module

Product Application

VMIVME-4150 is a 6U VME analog output board for VMEbus systems. It converts digital values from the VME SBC (such as V7768-320001) into isolated analog voltage or current signals for field control devices. Channels are grouped as three blocks of 4 channels; hardware can be populated for 4, 8 or full 12 channels. Optical galvanic isolation between each channel and VME backplane eliminates ground loop interference. Widely deployed in power plant turbine control, petrochemical legacy VME DCS, aerospace test benches and industrial embedded control systems.

VMIVME-4150

Product Specifications

Part Number: VMIVME-4150
Manufacturer: VMIC (acquired by GE Intelligent Platforms, now Abaco Systems)
Product Type: 6U VMEbus Analog Output Module
Resolution: 12-bit DAC
Channels: 12 isolated channels (configurable 4 / 8 /12 ch)
Isolation: 1000 Vpk channel-to-channel and channel-to-VME bus via optical coupling
Voltage ranges (software selectable): Bipolar: ±2.5 V, ±5 V, ±10 V Unipolar: 0–2.5 V, 0–5 V, 0–10 V
Current ranges: 4–20 mA, 0–20 mA, 5–25 mA
Accuracy: Voltage ±0.05% FS; Current ±0.08% FS
Voltage load: ±10 mA per channel
VME Interface: A24/D16 VMEbus slave
Power from VME backplane: +5VDC, +12VDC
Update: Dual-buffered latch for simultaneous glitch-free channel update
Readback: Onboard registers for output value readback
Operating Temperature: 0 ℃ ~ +50 ℃
Humidity: 5% ~95% RH non-condensing
Product Status: EOL, only refurbished / used spare stock for legacy VME system maintenance
Approx. Weight: 0.48 kg

Core Technical Parameters

Optical galvanic isolation protects VME backplane from field side surges and ground potential differences
Dual buffered DAC latches: all selected channels update at the same time to avoid transient glitches during setpoint changes
Power-up safe state: outputs can be automatically disconnected on startup
Static readback function to verify actual output value from software
Overvoltage protection on analog outputs
3 × 4-channel hardware grouping, partial population (4/8ch) factory option
Compatible with VME system controller like V7768-320001 SBC

Recommended Matching Spare Parts & Accessories (8 Items)

6U VME chassis & VME64x backplane
VME system SBC (V7768-320001)
VME chassis power supply
Analog signal shielded twisted pair field cable
VME front panel terminal adapter / breakout panel
VMEbus driver library & configuration software
VME I/O termination accessories
Spare VMIVME series I/O boards (VMIVME-3122 analog input)

VMIVME-4150

Product Features

✅ 12 Fully Isolated Analog Outputs Optical isolation 1000Vpk between channels and VME bus, suppress ground loop noise for process control loops.

✅ Software-selectable Voltage / Current Ranges Supports standard 4–20mA loop and multiple bipolar/unipolar voltage ranges, fits valve positioners and analog actuators.

✅ Dual-Buffered Glitch-Free Update All selected channels synchronously update, preventing valve bump during multi-loop setpoint adjustment.

✅ Output Readback & Power-up Disconnect Software can read back output value; outputs default to disconnected safe state when power is applied.

✅ Flexible Channel Population Board can be factory configured as 4, 8 or full 12 channels to match I/O quantity requirement.

✅ 6U Standard VME Form Factor Direct plug into standard 6U VME chassis together with V7768 SBC and other VMIVME I/O modules.

✅ Overvoltage Protection Analog channels include overvoltage protection to resist field wiring transients.

Installation Guidelines

Power off VME chassis, insert VMIVME-4150 into free 6U VME slot and fasten front panel screws.
Set board address jumpers for VME A24/D16 memory mapping.
Wire field analog devices to front panel analog terminals using shielded twisted pair cable.
Power on chassis, boot VME SBC (V7768).
Load VME driver, identify board via Board ID register.
Configure each channel for voltage or current mode and range in software.
Perform simultaneous multi-channel update test and readback verification.
Validate safe state behavior by cycling chassis power.

Maintenance Instructions

Daily Maintenance Check front panel status LED; verify analog output values and readback in control software.

Periodic Maintenance (Every 6–12 months) Clean chassis air filter and board surface dust. Inspect analog terminal wiring tightness. Backup VME system configuration.

Fault Maintenance

No analog output: Check VME address jumper, VME bus communication and channel mode configuration.
Channel drift / inaccurate value: Perform calibration; inspect field wiring for leakage or short.
Isolation failure: Replace board; check for field side high voltage surge damage.
Do not modify VME address jumpers while the system is online.

Long-Term Operation Tips Maintain cabinet temperature within 0~50°C. Keep spare VMIVME-4150 for legacy VME system emergency replacement. Archive VME driver and application configuration.