HEIDENHAIN VT 121 Operating Instructions Manual page 41

NOTICE
Damage to the device from the engaging and
disengaging of connecting elements during operation!
Damage to internal components may result.
Do not engage or disengage any connecting
elements while the unit is under power
NOTICE
Electrostatic discharge (ESD)!
This device contains electrostatic sensitive components
that can be destroyed by electrostatic discharge (ESD).
It is essential to observe the safety precautions for
handling ESD-sensitive components
Never touch connector pins without ensuring proper
grounding
Wear a grounded ESD wristband when handling
device connections
HEIDENHAIN | VT 121 | Operating Instructions | 03/2022
NOTICE
Damage to the product due to incorrect wiring!
The incorrect wiring of inputs or outputs can cause
damage to the product or to peripheral devices.
Comply with the pin layouts and specifications of the
product
Assign only pins or wires that will be used
Further information: "Specifications", Page 48
NOTICE
Damage due to incorrect cables
Damage to the product or machine from using the
wrong cables to connect the product to the control.
Use suitable HEIDENHAIN cables
Further information: "Accessories", Page 36
NOTICE
Moisture damage to cables
Capillary action may cause liquid to seep out from the
end of the cables' metal armor.
When routing the cables, ensure that any liquid that
may be present is drained off appropriately
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