Overview
The Honeywell 10020/1/1 is a Quad Processor Module (QPM) designed for the Honeywell Fail Safe Control (FSC) system. It controls FSC system operations through a processor architecture with hardware comparison and diagnostic functions. Furthermore, its onboard memory provides storage for system and application data, while watchdog monitoring helps detect processor discrepancies and initiate a fault response.
Key Features
- Quad Processor Module (QPM) for the Honeywell FSC system.
- Two processors and two memory sets.
- Hardware comparison logic monitors processor read and write operations.
- Watchdog monitoring detects discrepancies between processor operations.
- Integrated diagnostic hardware supports comprehensive module testing.
- Battery backup circuits support RAM memory backup through the associated FSC system modules.
- Front-panel key switch provides operating-state selection and processor reset.
Processor Architecture and Operation
The 10020/1/1 uses two processors with separate memory sets. Hardware comparison logic checks processor read and write operations. If the comparison detects a difference, the watchdog initiates a fault response.
In addition, dedicated test hardware supports extensive internal diagnostics. The documented diagnostic coverage exceeds 99%, allowing one QPM module to run applications up to and including AK6 without time limitation.
For redundant central processor configurations, the FSC architecture provides a 2oo4D voting arrangement.
Memory and Operating Controls
Each processor has 256 Kbytes of RAM for system and application variables, including I/O data, markers, counters, timers and registers. It also provides 1 Mbyte of non-volatile flash memory for system and application programs.
The front-panel key switch provides three operating positions:
- Vertical up: Ready or Run.
- Horizontal: Idle, software-controlled.
- Vertical down: Stop and processor reset.
The front-panel LED indicates module status. Green indicates normal operation without detected faults, red indicates stop mode or a hardware fault, and off indicates that the processor is not showing an active status indication.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 10020/1/1 |
| Brand | Honeywell |
| Product Type | FSC Quad Processor Module (QPM) |
| System | Honeywell Fail Safe Control (FSC) |
| Processor Architecture | Two processors with two memory sets |
| System RAM | 256 Kbytes per processor |
| System and Application Flash Memory | 1 Mbyte per processor |
| Power Supply | 5 VDC |
| Current Consumption | 300 mA |
| Ripple Content | Less than 50 mV peak-to-peak |
| Space Requirements | 4 TE, 3 HE (4 HP, 3U) |
| Software Version | 530 |
| Approvals | CE, UL, TÜV |
| Weight | 0.14 kg |
| Country of Origin | United States |
Installation and Replacement Considerations
The 10020/1/1 occupies 4 TE by 3 HE in the FSC Central Part. Its power requirement is 5 VDC, with a specified current consumption of 300 mA and maximum ripple content below 50 mV peak-to-peak.
Important: Do not remove or replace this module while power to the FSC Central Part is switched on. Follow the applicable FSC system maintenance procedures when performing module replacement.
Frequently Asked Questions
Q: What is the function of the Honeywell 10020/1/1?
A: It is a Quad Processor Module (QPM) that controls FSC system operations. Its processor comparison logic and watchdog monitoring support fault detection and safety-related control execution.
Q: Does the 10020/1/1 support redundant processor configurations?
A: Yes. Redundant central processor configurations use a 2oo4D voting architecture. The module also supports standalone operation for applications up to and including AK6, as documented in its technical description.
Q: Can the 10020/1/1 be replaced while the FSC system is powered on?
A: No. The module documentation specifically prohibits removal or replacement while power to the Central Part is on.
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