Security Functions
3–1
1070 073 822-104 (02.06) GB
3 Security Functions
Each PC is equipped with a temperature monitoring function and an uninter-
ruptible power supply (UPS). The UPS only works in conjunction with a bat-
tery pack.
3.1 Temperature monitoring function
The ambient air of the IPC must not exceed +45°C (see Section 2.5). To en-
sure operational reliability, a temperature monitoring function measures the
internal housing temperature.
A temperature warning, occurring at internal housing temperatures exceed-
ing 50°C, manifests itself as follows:
D via the flashing “Temp” LED at the front panel of the housing.
D via a message window displayed by the operating system.
This message must also be interpreted by all PC applications, and by I/O
processes in particular. Bosch Rexroth application programs are in full
compliance with this requirement.
The descibed temperature monitor can be disabled by means of the follow-
ing program:
D UPS
plus
for Windows 95
D UPS
NT
for Windows NT 4.0
See also Section 3.3.
If temperatures in the housing exceed 65°C, the IPC will be shut down and
switched off via the UPS logic circuit (see Section 3.2).
DANGER
Inadvertent machine movements.
Always ensure that temperatures remain within the noncritical
range. In the case of application-sensitive procedures, ensure that
machine movements are terminated in a controlled fashion in the
event that the temperature monitoring function disables the operator
terminal.
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