General Notes
Basic safety measures
Warning
Before opening the control panel housing, and whenever the control
panel is not being used for control purposes (such as during
functional checks after a repair), all parts of the equipment must first
be switched off, after which the control panel is to be disconnected
from the equipment.
Disconnect the device by unplugging the connectors on the Control Panel
side.
Items of equipment that have been switched off must be secured
against being switched on again.
Danger
Displays used for the control panel’s LC-display are operated with a
voltage of up to 1000 V, depending on type. For that reason:
The supply voltage must be disconnected before the housing of the
Control Panel is opened.
i
Note
Assembly work on the Control Panel during operation may damage the
panel:
•
if metal objects such as screws or tools fall onto operating circuit
boards.
•
if connecting cables internal to the control panel are removed or
inserted during operation
CP78xx
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