GE Fanuc IC200ERM002 VersaMax Expansion Receiver
The GE Fanuc IC200ERM002, also cataloged as the IC200ERM002 Non-isolated Expansion Receiver Module, operates as a dedicated hardware component for multi-rack I/O expansion within VersaMax PLC platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IC200ERM002 |
| Brand | GE Fanuc (Emerson) |
| Origin | USA |
| Module Type | Non-isolated Expansion Receiver |
| Expansion Capacity | Up to 7 racks maximum (Max 8 modules per rack) |
| Data Transfer Speed | 5 Mbps or 2.765 Mbps (Configurable) |
| Cable Length Limits | Max 1 meter (Single); Max 15 meters total (Multi-rack) |
| Physical Connectors | Two 26-pin D-shell expansion ports (In / Out) |
| Backplane Voltage | 3.3 VDC and 5 VDC |
| Current Consumption | 70 mA @ 5 VDC; 20 mA @ 3.3 VDC |
| Operating Temp | 0 to +60 deg C |
| Dimensions | Standard VersaMax I/O module footprint |
| Weight | 0.23 kg |
Backplane Bus Communication Velocity and I/O Density Scaling
The IC200ERM002 manages high-speed distributed datalink frames across expanded VersaMax subplanes, providing the raw backplane bus communication velocity needed to service remote racks without introducing phase lag into the central CPU scan. Supporting discrete I/O density scaling up to 7 multi-drop racks, the module serializes local card registers into deterministic packets at 5 Mbps clock rates. Because this is a non-isolated hardware variant, the system relies on an unbroken, low-impedance master ground plane across the expansion bus to prevent localized common-mode ground transients from destabilizing the 26-pin D-shell data lines.
Frequently Asked Questions
Q: What are the layout consequences if the cumulative cable distance of a multi-rack network drops below or exceeds the 15-meter threshold?
A: Exceeding the 15-meter total boundary causes signal attenuation and protocol frame corruption due to high-frequency reflection across the 5 Mbps datalink. The bus structure must be designed to stay within the 15-meter cumulative limit.
Q: How does a sudden loss of logic power on an expansion rack affect the primary CPU rack configuration?
A: When an expanded subplane loses power, the IC200ERM002 drops its active communication state. The main CPU registers an I/O drop fault on that specific rack ID, logs a system backplane error, and executes the predefined fallback logic state.
Q: Is it permissible to connect or disconnect the 26-pin D-shell expansion cables while the VersaMax system power is active?
A: No. Physical handling or unseating of the D-shell interfaces under live conditions will create voltage spikes and pins arcing across the non-isolated bus, resulting in hardware damage or an immediate CPU watch fault.
Field Installation Guidelines
- DIN Rail Attachment and Ground Alignment: Snugly click the module housing onto a clean, unpainted 35 mm top-hat DIN rail profile. Tighten all grounding clamps to ensure direct metal-to-metal contact with the panel backplate to eliminate grounding offsets.
- D-Shell Interface Securement: Slide the 26-pin D-shell male connectors straight into the expansion ports. Hand-tighten the integrated retaining jack screws to prevent mechanical displacement from industrial vibration.
- Cable Separation Restrictions: Route the high-frequency expansion bus cables through separate industrial wire trays away from high-current AC motor leads, variable frequency drive outputs, and inductive switching relays to block electromagnetic cross-talk.
- Enclosure Thermal Maintenance: Position the expansion racks to allow at least 50 mm of vertical clearance above and below the ventilation grids, keeping the ambient air pocket strictly within the 0 to +60 deg C range.
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