Installation and Connections
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8 Installation and Connections
8.1 ESD Protection
Only personnel who have the knowledge of ESD protective measures are permitted to carry
out system modifications/upgrades to the system wiring.
• Touch an earthed object to discharge any static in your body.
• When carrying out the work, make sure to use an ESD protected working area and
wear an earthing strip.
• When the module is not in use, ensure it is protected from electrostatic discharges, e.g.
keep it in its packaging.
8.2 How to Insert and to Remove Modules
8.2.1 I/O Modules
Remove:
1. Remove both screws of the module,
2. remove the module together with the cable plug,
3. screw off the cable plug and remove it.
Insert:
1. Insert and fix the module without cable plug,
2. plug in the cable plug and fix it by the screws,
3. for safety-related modules and modules with slot detection (see overview of modules in
chapter 10):
Refresh the display by pressing the ACK key on the central module.
8.2.2 Coupling Modules
Remove:
1. Switch off the module (WD switch to “OFF” position),
2. remove fixing screws of the module,
3. remove the module,
4. corresponding I/O subrack is completely switched off.
An electrostatic discharge can damage the built-in electronic compo-
nents.
The modules of the HIMA PES H41q and H51q may be removed and
inserted if the following rules are observed. The modules must be re-
moved from the bus board uninterruptedly by means of the ejection le-
ver (front label) to prevent faulty signals in the system, which can trigger
a shutdown.
The modules may not be cant by a screwdriver or by vibrations.
HIMA takes no responsibility for damages resulting from insertion and
removing of the modules.
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