Honeywell 10100/2/1 FSC Horizontal Bus Driver Module

Product Overview

The Honeywell 10100/2/1 is a Horizontal Bus Driver (HBD) used in the I/O racks of Honeywell Fail Safe Control (FSC) systems. It provides the connection between the vertical bus from the Central Part (CP) and the horizontal bus serving the I/O modules within a rack.

The HBD assembly consists of the 10100/2/1 electronic module and an A1, A21, or A22 flatcable. The vertical bus connects to the module through rear connector CN1, while the flatcable extending from the front connects to the horizontal bus above the I/O rack. Address selection lines are routed to the horizontal bus through connector CN3.

Depending on the selected flatcable, the same electronic module supports non-redundant I/O, redundant I/O with one rack per HBD, or redundant I/O with two racks per HBD.

Key Features

• Connects the FSC vertical bus to the horizontal I/O bus.
• Supports three I/O rack configurations through A1, A21, and A22 flatcables.
• Uses rear connector CN1 for the vertical bus connection.
• Routes I/O address selection lines through connector CN3.
• Supports rack address configuration through RA0–RA3 jumpers on the associated backplane.
• Operates from a 5 VDC supply with configuration-dependent current consumption.
• Compact 4 HP, 3U module format.

Technical Specifications

Flatcable Configurations

The 10100/2/1 uses one of three flatcable arrangements according to the FSC I/O architecture.

The flatcable selection must correspond to the installed rack arrangement. The A22 configuration requires more supply current than the A1 and A21 configurations.

Backplane Compatibility and Addressing

The 10100/2/1 is used with FSC rack backplanes that provide the vertical bus interface and HBD rack-address configuration. Applicable backplane models include:

• 10314/1/1 – I/O backplane for non-redundant I/O.
• 10315/1/1 – I/O backplane for redundant I/O.
• 10316/1/1 – HBD backplane for non-redundant I/O.
• 10317/1/1 – HBD backplane for redundant I/O.

The HBD rack address is programmed using jumpers RA0 to RA3 on the corresponding backplane. The manufacturer provides address settings for HBD1 through HBD10. Correct address assignment is necessary for identifying the I/O rack within the FSC configuration.

Installation and Replacement

For non-redundant I/O backplane arrangements, the HBD is installed in rack position 21. Redundant I/O arrangements can use HBD positions 20 and 21, depending on the backplane configuration.

The Honeywell hardware manual permits replacement of the 10100/2/1 with power applied, but specifically warns that the Central Part will shut down if the HBD is safety-related. Replacement procedures must therefore account for the system's safety configuration and operating state.

Documentation

Technical reference: Honeywell Fail Safe Control Hardware Manual, PM.MAN.8048, Revision 02. Refer to Section 4, pages 4-103 through 4-107, for the 10100/2/1 module description, connector arrangement, rack addressing, flatcable routing, and technical specifications.