Key Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | MAE99-04 |
| Manufacturer | CONVERTEAM |
| Product Type | I/O Isolation Unit Module |
| Isolation Function | Electrical isolation between field side and control side |
| Signal Types Supported | Digital, analog, frequency signals |
| Channel Design | Multi-channel (simultaneous operation) |
| Interface Compatibility | Modbus, Profibus, and common industrial protocols |
| Mounting | Compact module form factor, panel or rack mount |
| Design Focus | High isolation performance, low noise interference |
| Typical Application | Industrial automation, process control, DCS/PLC signal interfacing |
Product Introduction
The CONVERTEAM MAE99-04 is an I/O isolation unit module designed for industrial automation systems. It sits between field instruments and the host control system, providing electrical isolation that blocks high voltage transients and electrical noise from reaching sensitive controller inputs. The module passes digital, analog, and frequency signals across the isolation barrier while maintaining galvanic separation.In practice, this module addresses a common failure mode in aging process plants: ground loops and noise coupling that cause erratic readings or false trips. By inserting the MAE99-04 between the field device and the controller, you break the ground loop path and restore signal integrity. The multi-channel design means one module can serve several signal paths, reducing panel space and wiring complexity.
Installation & Configuration Guide
Phase 1: Preparation (10 min)
- Obtain lockout/tagout authorization for the target panel or rack.
- Identify the signal types (analog, digital, or frequency) passing through the installation point.
- Confirm the MAE99-04 channel count matches the number of signals you need to isolate.
- Gather tools: ESD wrist strap, multimeter, screwdrivers, wire labels.
- Photograph existing wiring and module orientation before disconnecting anything.
Phase 2: Removal of Existing Module (5–10 min)
- Label every wire connected to the existing module.
- Disconnect field-side wiring first, then control-side wiring.
- Remove mounting hardware and extract the old module.
- Inspect the mounting surface and terminal blocks for corrosion or damage.
Phase 3: Installation (10 min)
- Mount the MAE99-04 in the same position or an equivalent location with adequate ventilation.
- Connect control-side wiring to the output terminals.
- Connect field-side wiring to the input terminals.
- Verify that field-side and control-side grounds remain separated — do not bond them at the module.
- Double-check all terminal torque and wire labels against your photo.
Phase 4: Power-On & Test (10 min)
- Remove lockout and apply control-side power only.
- Confirm the module powers up with no abnormal heat or odor.
- Inject a known test signal at one field input and verify the controller reads the correct value.
- Repeat for each active channel.
- Monitor for 15 minutes to confirm stable readings with no drift or intermittent drops.
Troubleshooting Quick Reference
| Symptom | Most Likely Cause | Check First |
|---|---|---|
| No signal at controller output | Field-side power missing or wiring fault | Measure voltage at field input terminals |
| Erratic or noisy readings | Ground loop not fully broken | Verify field ground and control ground are not bonded downstream |
| Module runs hot | Overload or short on output side | Disconnect load and retest; check for shorted wiring |
| Intermittent signal loss | Loose terminal connection | Re-torque all terminals; inspect for wire strand breakage |
| Controller reports communication fault | Protocol mismatch or baud rate error | Confirm Modbus/Profibus settings match controller configuration |
| Module not recognized on bus | Address conflict or bus termination issue | Check node address DIP switches and bus terminator placement |
Dimensions, Mounting & Wiring Notes
- Form Factor: Compact industrial module — exact dimensions should be confirmed against the physical unit or OEM drawing, as published references do not list specific H×W×D measurements.
- Mounting: Panel or DIN rail mount depending on chassis variant. Ensure adequate clearance for heat dissipation.
- Wiring: Keep field-side and control-side wiring physically separated within the panel. Use shielded cable for analog signal paths. Connect cable shields at one end only to avoid creating a new ground loop.
- Terminal Notes: Do not exceed the rated voltage or current for each channel. Refer to the module nameplate for terminal ratings.
FAQ
What does the MAE99-04 actually do?
It provides galvanic isolation between field instruments and your control system. Signals pass through, but electrical continuity does not — which blocks ground loops, voltage spikes, and noise from reaching your controller.Will this work with my PLC or DCS?
The module supports Modbus and Profibus interfaces and handles analog, digital, and frequency signals. Send us your controller model and the signal types you need to isolate, and we will confirm compatibility before you order.I have a ground loop problem. Will this fix it?
In most cases, yes — that is exactly what this module is designed for. The key requirement is that your field-side ground and control-side ground must not be bonded anywhere downstream of the module. If they are, the isolation is bypassed.What condition is this unit in?
Units are supplied as refurbished and function-tested spares. Each unit undergoes incoming inspection, functional channel testing, and electrical verification. Function verified under test conditions — this is not a guarantee of performance in your specific installation.How do I know the channel count is right for my application?
The MAE99-04 supports multi-channel operation. Count the number of individual signal paths you need to isolate at this location, then confirm the module has enough channels. If you need more channels than one module provides, you will need multiple units.I need this part fast. What is the lead time?
In-stock units typically ship within 1–3 business days. Contact us with your shipping location for a current delivery estimate.Is there a risk of counterfeit with this part?
We perform visual authentication on incoming units — checking PCB markings, component date codes, solder quality, and connector integrity. Anything that fails inspection is rejected. If you receive a unit and suspect an issue, contact us immediately for verification.
