Z7138 cable socket HIMA safety control unit DCS system

Description

Z7138 For time-critical applications or systems including more than one controller (PES), it is

necessary to determine the watchdog time tWD during start-up. This must be done during RUN

operation and under full load. To this end, Z7138 all engineered modules must be inserted and all the

configured communication connections (e.g., safeethernet and other standard protocols) must

be operating.

The maximum system load results from synchronization, when the modules are removed and

reinserted. The watchdog time must be set so that synchronization at full load is always

possible.

Z7138 To perform the test

1. In the resource properties, set the Safety Time [ms] to the maximum value (22 500 ms).
2. In the resource properties, set the Watchdog Time [ms] to the maximum value (7 500 ms).
3. In the resource properties, set the Maximum System Bus Latency [µs] to the default value

System Defaults.

4. Compile the configuration and load it into the controller by performing a download.
5. Start the resource (cold start).
6. Open the Control Panel for the resource and reset the cycle time statistics.

For the following steps, ensure that the system is operated under full load.

7. Read out the maximum cycle time Z7138 in the Control Panel, wait several minutes and note down

the variations and load peaks.

8. In succession, remove all I/O processing modules (F-IOP 01) from the racks. Once the last

I/O processing module has been removed, read the maximum system cycle time in the

Control Panel and note it down.

9. Insert the removed I/O processing modules into the racks in any order and wait for the

system to properly operate again.

10.Remove the processor module with the highest slot number from the base rack and reset the

cycle statistics in the Control Panel.

11.Reinsert the Z7138 processor module that has been removed in the previous step into the base

rack and wait for it to be completely synchronized with the existing processor module.

Afterwards, read the maximum cycle time in the Control Panel and note it down.

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