General Electric IC200ERM002 Expansion Receiver Module

The non-isolated expansion receiver module (*ERM002) connects an expansion "rack" to a PLC or NIU I/O station system. An expansion rack can accommodate up to eight I/O and specialty modules. A power supply mounted on the expansion receiver module provides operating power to the modules in the rack.

If there is only one expansion rack in the system and the cable length is less than one meter, you do not need to use an expansion transmitter module (*ETM001) in the PLC or I/O station. If there are multiple expansion racks, or if only one expansion rack is more than 1 meter away from the CPU or NIU, an expansion transmitter module is required.

Dual-Rack Local Systems:

The expansion receiver IC200ERM002 can also be used to connect a VersaMaxPLC main rack or VersaMaxNIUI/O station to only one expansion rack without installing an expansion transmitter module in the main rack.

The maximum cable length for this "single-ended" configuration is 1 meter. No termination plugs are required in the expansion rack.

Expansion Connectors:

The expansion receiver has two 26-pin female D-type expansion ports. The upper port accepts incoming expansion cables. In a system that includes expansion transmitter modules, the lower port on the non-isolated expansion receiver module is used to daisy-chain the cable to the next expansion rack or to connect the termination plug to the last rack. The expansion receiver must always be installed in the leftmost position of the rack (slot 0).

LED Indicators:

The LEDs on the expansion transmitter show the power status of the module and the status of the expansion port.

RS-485 Differential Expansion System:

Non-isolated expansion receiver modules can be used in multi-rack expansion systems that include expansion transmitter modules in a PLC or NIU I/O station. Up to seven expansion racks can be included in the system. The total length of the expansion cable can be up to 15 meters using any non-isolated expansion receiver module in the system.