GE IC660BBS100 Isolated I/O Block

The GE IC660BBS100 provides 16 isolated discrete I/O points for Genius networks. This block handles both digital inputs and outputs in one compact unit. You will find it in harsh industrial environments with high electrical noise. It offers complete isolation between each channel and the backplane. Therefore, this unit prevents ground loops and protects sensitive electronics.

This block measures 180 mm in height and 95 mm in width. Its depth reaches 57 mm for DIN rail or panel mounting. The unit weighs approximately 0.72 kilograms. It contains one microprocessor and 16 independent optocouplers. Eight channels function as inputs while eight serve as outputs. Additionally, you get two isolation transformers for network protection.

Key Technical Specifications

Parameter	Value
Manufacturer	GE Fanuc Automation
Model	IC660BBS100
Product Type	Isolated I/O Block
Total I/O Points	16
Input Channels	8 (120 VAC)
Output Channels	8 (relay, 2A)
Input Voltage Range	85-132 VAC
Output Contact Rating	2A at 120/240 VAC
Isolation Type	Optocoupler + transformer
Isolation Rating	1500 VAC per channel
Height	180 mm
Width	95 mm
Depth	57 mm
Weight	0.72 kg
Microprocessor	1 (8-bit)
Optocouplers	16
Isolation Transformers	2
Status LEDs	18 (PWR, NET, I/O)
Energy Storage	≈ 480 µF (capacitive)
Operating Temperature	-20°C to +70°C

Internal Architecture and Energy Storage

The GE IC660BBS100 stores moderate energy in its power supply filter. Electrolytic capacitors hold approximately 480 microfarads of total capacitance. A main 8-bit microprocessor scans all 16 I/O points continuously. This processor communicates with the Genius network at 153.6 kbps. Each input channel uses its own optocoupler for complete isolation. Each output channel uses a mechanical relay with 1500 VAC isolation. Two transformers couple the network signals to the processor safely. You get 18 LEDs for comprehensive status monitoring.

Connection Interfaces and Signal Wiring

You will find two removable terminal blocks on this block. One 10-pin block handles eight input connections and commons. The other 10-pin block manages eight output connections for field loads. Connect 120 VAC supply to the input common terminals. Wire field sensors between the hot input and the channel terminal. For outputs, connect the load between the relay common and the channel terminal. The GE IC660BBS100 includes two Genius network connectors on top. One connector brings network traffic into the block. The other connector passes it to the next Genius device.

Configuration and Installation Steps

You mount this block onto standard 35 mm DIN rail. First, hook the top lip onto the rail edge securely. Then, press the bottom downward until it locks in place. Slide the block along the rail for proper panel spacing. Connect all field wiring before applying network power. Use a handheld monitor to assign a unique node address. The GE IC660BBS100 accepts 24 VDC or 115 VAC auxiliary power. The unit consumes 250 mA from 24 VDC or 80 mA from 115 VAC. Always terminate both ends of the Genius network properly. Test each input and output before system startup.