Siemens SIPART PS2 PA 6DR55 Series, Руководство по эксплуатации

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Connect
6.1 Connect electrically
SIPART PS2 with PROFIBUS communication
Operating Instructions, 09/2007, A5E00127926-07
81
6.1.6.5 Mechanical limit switch module
Safety note for low-voltage supply
DANGER
Low-voltage supply
When you supply the module in the non-intrinsically safe version with low voltage, you must
be sure to observe the following safety rules before starting work on the device:
1.
Isolate the device from power. Use a circuit breaker positioned near the device to do
this.
2. Make sure that the device cannot be switched back on inadvertently.
3. Make sure the device is truly isolated from power.
Safety notes for connecting the mechanical limit switch module
WARNING
Protection against mechanical influences
In order to guarantee the degree of protection IP66/NEMA 4x, you must protect the module
against mechanical influences. This is achieved by selecting a suitable installation location
or by installing a suitable protection device. This required protection applies to the operation
of the module with the following voltages:
•
> AC 16 V
• > DC 35 V, low voltage
NOTICE
Maximal values for terminals 41/42 and 51/52
The following maximum values concern only terminals 41, 42, 51, and 52:
•
Maximum voltage:
–
Not Ex: AC 250 V or DC 24 V
– Ex: 30 V DC
•
Maximum current:
–
Not Ex: 4 A AC/DC
– Ex: 100 mA DC
• Maximum performance:
–
Ex: 750 mW
No safe separation between the terminals can be guaranteed.