10005/1/1 | Honeywell Watchdog module (WD)

Description

The Honeywell 10005/1/1 watchdog module monitors system parameters including:

• Application Loop Monitoring:
  • Maximum Execution Time: Detects if the process is executing correctly and not looping (hang-up).
  • Minimum Execution Time: Detects if the processor is executing correctly and not skipping program parts.
• Voltage Monitoring:
  • 5 Vdc: Monitors for overvoltage and undervoltage (5 Vdc ± 5 %).
• Memory Error Logic: Monitors CPU, COM, and MEM modules. If a memory error occurs, the watchdog output is de-energized.
• ESD Input: De-energizes the watchdog output independently from the processor. This input is 24 Vdc and galvanically isolated from the internal 5 Vdc.

Testing:

• The WD module is a 2-out-of-3-voting system to test all functions. Each section monitors the parameters described above.
• Maximum WDG OUT Output Current: 900 mA (fuse 1A) 5 Vdc.
  • If higher current is required (total of WD input currents of the output modules), use a watchdog repeater (WDR, 10302/1/1) and divide the load over the WD and the WDR.

Technical Data

The 10005/1/1 module has the following specifications:

General

• Type number: 10005/1/1 01301*
• Approvals: CE, TÜV, UL
• Software versions: All
• Space requirements: 4 TE, 3 HE (= 4 HP, 3U)

Power

• Power requirements: 5 Vdc 175 mA (without WDGOUT output current)
• Ripple content: < 50 mV p-p

Input

• ESD1 input: 24 Vdc 5 mA
• Reset input: 24 Vdc 10 mA
• ESD2 input: 5 Vdc 10 mA

Note:

• Suffix Code 01301: Modules with suffix code 01301 are functionally identical to modules without a suffix code. The changes involve improved production yield and reliability.
• Module Handling: Do not remove or replace this module while the power on its Central Part is on.