HIMA H51q-H B5233-2 997235233 The control device is equipped with a central module

Description

H41q-HS / H51q-HS with double processors, safety-related redundant central modules and a single channel I/O bus for highly available and safety related PES with TÜV certificate up to SIL 3 according to IEC 61508.

All modules of the H51q system family meet the requirements for electromagnetic compatibility and immunity according to article 10 of the EU guideline 89/336/EWG for the electromagnetic conformity. This is marked with the CE sign within the data sheets of the modules. Also the systems and modules are wearing a label with this sign. The H51q system family consists of one 19 inches central rack, 5 units high, and up to 16 input/output racks in the 19 inches size, 4 units high (see also data sheets for H51q systems or assembly kits).

Parameter “Display only“
Switch-off by means of the integrated safety shutdown inside the output amplifier. If not possible then shutdown of the watchdog signal in the I/O subrack by means of the coupling module (only in systems H51q). No shutdown of the watchdog signal of the appertaining central unit. This parameter is permissible only up to SIL 1. Parameter “Normal operation“ Reaction as with parameter “Display only“, additionally switch-off of the watchdog signal of the appertaining central unit if necessary. Parameterization required from SIL 2. Normal and recommended parameter. Parameter “Emergency off“ Switch-off of the watchdog signal of the appertaining central unit and thus shutdown of the output amplifiers in case of a fault in the output module.

The watchdog signal is not switched off at faults in the input modules. Module switch-off A faulty testable output module with integrated safety shutdown will be switched automatically to the safe de-energized safe status.

Group shutdown
If it is requested, a group shutdown may be defined in the user program so that all testable output modules belonging to one group with the faulty module are also switched off. Inside the user program up to 10 testable output modules can be assigned to one group by
means of the function block H8-STA-3. WD switch-off of the appertaining CPU In this case the watchdog signal (WD) of the appertaining central module will be switched off.
If systems with redundant central modules and a common I/O bus are used then the output modules are assigned to both central modules. In case of a fault both watchdog signals of the central modules are switched off, that means all the I/O modules are switched off (only at H51q-H/HS).
If systems with redundant central modules and redundant I/O bus are used then the output modules are related to one central module and one I/O bus. In case of a fault only the watchdog signal of the related central module is switched off, that means only the related I/O modules are switched off (only at H51q-HR/HRS).

Switch-off of the appertaining coupling module
In this case the watchdog signal (WD) of the appertaining coupling module will be switched off, that means that all I/O modules related to this coupling module will be switched off.

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