9 Maintenance  System Manual Modular Systems 
Page 100 of 114  HI 800 191 E Rev. 2.02 
9  Maintenance 
The maintenance of HIMatrix systems is restricted to the following: 
  Removing disturbances 
  Replacing the back-up battery, if required. 
  Loading Operating Systems 
9.1  Interferences 
Disturbances in the CPU 01 processor system mostly result in the complete shut-down of the 
controller and are indicated via the ERR LED on the CPU 01. 
For possible reasons for the ERR LED to light, refer to the CPU 01 manual (HI 800 189 E). 
To turn off the indicator, start the Reboot Resource command located in the Extra menu 
associated with the Control Panel. The controller is booted and re-started. 
The system automatically detects disturbances in the input and output channels during 
operation and displays them via the FAULT LED on the front plate of the corresponding module. 
Even if the controller is stopped, the PADT diagnostic history can be used to read out detected 
faults, provided that communication was not disturbed as well. 
Prior to replacing a module, check whether an external line disturbance exists and whether the 
corresponding sensor or actuator is ok. 
9.2  Replacing Fans 
HIMA recommends replacing the fans of the HIMatrix F60 on a regular basis to prevent the fans 
to fail: 
  At normal temperatures (< 40 °C):  every 5 years 
  At increased temperatures (> 40 °C):  every 3 years 
The fans must be replaced by trained personnel. 
9.3  Loading Operating Systems 
The processor and communication systems have different operating systems that are stored in 
the rewritable flash memories and can be replaced, if necessary. 
Disruption of the safety-related operation! 
The controller must be in the STOP state to enable the programming tool to load new 
operating systems. 
During this time period, the operator must ensure the plant safety, e.g., by taking 
organizational measures. 
 
  The programming tool prevents controllers from loading the operating systems in the RUN 
state and reports this as such. 
  Interruption or incorrect termination of the loading process has the effect that the controller 
is no longer functional. However, it is possible to reload operating system. 
The operating system  for the processor system (processor operating system) must be loaded 
before that for the communication system (communication operating system). 
Operating systems for controllers differ from those for remote I/Os.