10002/1/2 | Honeywell Run/Stop Key Selector Module 1A 5VDC

Product Overview

The Honeywell 10002/1/2 is the Central Processor Unit (CPU) for the Honeywell FSC (Fail Safe Control) system. It is the core processing engine that controls all system operations, featuring a front-panel key switch for hardware reset and run/stop control. The CPU module includes battery back-up circuits for RAM memory, enabling data retention from the Diagnostic and Battery Module (DBM, 10006/1/1 or 10006/2/) or Single Bus Driver (SBD, 10007/1/1).

Key Specifications

• Model Number: 10002/1/2
• Product Type: Central Processor Unit (CPU)
• Series: Honeywell FSC (Fail Safe Control)
• Type Number: 10002/1/2 06001* (modules with suffix code 06001 have improved EMC behavior)
• Power Requirements: 5 Vdc 1 A (including 10002/A/1 module)
• Ripple Content: < 50 mV p-p
• Space Requirements: 4 TE, 3 HE (= 4 HP, 3U) (including 10002/A/1 module)
• System RAM: 128 Kbytes (on 10002/1/2 module)
• Application RAM: 128 Kbytes (on 10002/1/2 module)
• System EPROM: 256 Kbytes (on 10002/A/1 module)
• Max. Application EPROM Capacity: 1 Mbyte (on 10002/A/1 module)
• Max. Application RAM Capacity: 1 Mbyte (on 10002/A/1 module)
• Supported RAM Types:
  • 628128/431000: 128 k × 8 (1 Mb) or equivalent
  • 684000: 512 k × 8 (4 Mb) or equivalent
• Max. RAM Access Time: 100 ns
• Key Switch Positions:
  • Vertical: Running
  • Horizontal: Stop (CPU reset)
• Memory Backup: Battery back-up from DBM (10006/1/1 or 10006/2/) or SBD (10007/1/1)
• Jumpers: 9 jumpers (J1-J3 factory-set; J4-J6 define local/global application; J5-J9 define memory type and size)
• Software Versions: ≥ 2.80b
• Approvals: CE, TÜV, UL
• Dimensions (10002/A/1): 84 × 54 × 12 mm (3.31 × 2.13 × 0.47 in)
• Weight: 0.24 kg (240 g)

FAQ

Q: Is the 10002/1/2 just a key switch module?
A: No. The 10002/1/2 is the FSC Central Processor Unit (CPU). The key switch is one of its front-panel features for hardware reset. It also contains 128 KB system RAM, 128 KB application RAM, and interfaces with the 10002/A/1 module for EPROM and expanded memory.

Q: What is the 10002/A/1 module and do I need it?
A: The 10002/A/1 is a companion module that provides 256 KB system EPROM and up to 1 MB application EPROM/RAM capacity. It is required for the CPU to function — the 10002/1/2 and 10002/A/1 together occupy 4 TE, 3 HE of rack space.

Q: What happens when the key switch is turned to Horizontal (Stop)?
A: The Horizontal position triggers a CPU reset, stopping all processor operations. This is a hardware reset function, not just a logical stop.

Q: Can the module be hot-swapped?
A: No. Do not remove or replace this module while power to its Central Part is on. Always power down the system before CPU module maintenance.

Q: What is the difference between 10002/1/1 and 10002/1/2?
A: The 10002/1/1 is an earlier CPU version with max 512 KB EPROM and 64 KB RAM. The 10002/1/2 is the upgraded version with improved EMC (suffix 06001+), 128 KB system/application RAM, and support for up to 1 MB memory.

Installation Guide

1. Power down the FSC Central Part completely before installation.
2. Install the 10002/A/1 companion module first (if not already present).
3. Install the 10002/1/2 CPU module adjacent to the 10002/A/1.
4. Configure jumpers J4-J9 per application requirements:
   • J4-J6: Define application as local or global
   • J5-J9: Define local memory type and size
5. Verify soldering links SO1-SO4 are factory-set (on back of module).
6. Connect battery backup from DBM (10006/1/1 or 10006/2/) or SBD (10007/1/1).
7. Power up and verify CPU status via diagnostic LEDs.
8. Load application program via FSC engineering software.