Connect
6.1 Connect electrically
SIPART PS2 with PROFIBUS communication
Operating Instructions, 09/2007, A5E00127926-07
89
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.
NOTICE
Installing/connecting
Only qualified personnel is permitted to install and connect the mechanical limit switch
module.
NOTICE
To observe before connecting
Before you connect the mechanical limit switch module, observe the following conditions:
•
Only qualified personnel is permitted to connect the mechanical limit switch module.
•
Isolate all wires from power and make sure the device is truly isolated from power.
•
Construct the cross-sectional area of the connection cables in such a way that it is
appropriate for the permitted current load.
•
Selected the wires on the basis of the following rule: The temperature at which the wires
are permitted to be used must be 25°C above the maximum ambient temperature.
•
Operate the Ex-version only in intrinsically safe circuits with approved switching
amplifiers.
NOTICE
Preparing the cables or stranded wires
1.
Insulate the cables in such a way that the insulation is flush with the terminal when
plugging in the wires.
2.
Fit ferrules to the ends of stranded wires.