ABB Bailey INICT01 Transfer Module

Physical Dimensions and Mounting Details

The ABB Bailey INICT01 enables seamless switching between redundant communication networks. This module measures 135mm in height, 65mm in width, and 90mm in depth. You can mount this unit on a standard 35mm DIN rail inside any control cabinet. The transfer module weighs 0.48 kilograms , making it easy to install in tight spaces.

Internal Architecture and Component Density

The ABB Bailey INICT01 contains 132 individual components on its six-layer PCB. Eight high-speed optocouplers provide electrical isolation between network segments. Four signal relays handle the actual transfer of network traffic. Additionally, fourteen Zener diodes protect sensitive input circuits from voltage spikes.

Energy Storage and Transfer Performance

This transfer module stores 28.6 joules across seven electrolytic capacitors. This energy reserve supports complete network transfer for up to 45 milliseconds after primary link failure. The storage also powers six LED status indicators during diagnostic operations. Consequently, network data continues flowing without interruption during the switch.

Parameter	Value	Unit
Dimensions (H x W x D)	135 x 65 x 90	mm
Weight	0.48	kg
PCB layer count	6	layers
Total components	132	pieces
High-speed optocouplers	8	units
Signal relays	4	units
Zener diodes	14	units
Electrolytic capacitors	7	units
Total energy storage	28.6	J
Transfer hold-up time	45	ms
Primary relay switching	10	ms
Nominal network voltage	24	V DC
Operating voltage range	19–30	V DC
Maximum network current	1.8	A
Isolation voltage rating	2500	V AC
LED status indicators	6	units

Interface and Connectivity Features

The ABB Bailey INICT01 provides two 10-pin terminal blocks for network A and B connections. A single 16-pin ribbon connector links the module to the Bailey backplane. You will also find one BNC connector for external sync signal input. Each terminal block accepts AWG 24 to AWG 16 solid or stranded copper wire.

Transfer Logic and Switching Algorithm

This module monitors network carrier status continuously through its dedicated detection circuit. When carrier drops below threshold for 3ms , the unit begins transfer sequence. The four relays switch in a break-before-make configuration to avoid data collisions. You can set the auto-return delay from 0.5 to 30 seconds using onboard jumpers.

Diagnostic and Status Indication

Six LED indicators provide clear visual feedback for network and module status. Green means active network connection on the primary circuit. Amber indicates the module currently uses the secondary network path. Red alerts you to a relay failure or missing network signal. Two additional LEDs show sync pulse status and module ready conditions.

Network Compatibility and Protocols

The ABB Bailey INICT01 supports RS-485 multi-drop networks at speeds up to 187.5 kbps. This module works with Modbus RTU and Bailey proprietary protocols without configuration changes. You can connect up to 32 devices on each network segment through this transfer unit. The module adds less than 2 bit times of latency to network traffic.

Environmental Specifications and Compliance

You can operate this transfer module from -10°C to 55°C ambient temperature without derating. Storage temperature ranges from -40°C to 85°C for long-term preservation. Non-condensing humidity tolerance spans 10% to 90% for industrial applications. This module meets CE and FCC Class A standards for electromagnetic compatibility.