Endress+Hauser PROFI BUS Proline Promag 53 PROFIBUS DP Operating Manual page 64

Wiring
64
Technical data (fieldbus connector):
Connection cross section
Connector thread
Degree of protection
Contact surface
Housing material
Flammability
Operating temperature
Ambient temperature
Nominal current per
contact
Nominal voltage
Resistance to tracking
Volume resistance
Insulation resistance
Shielding of the supply line/T-box
Use cable glands with good EMC properties, with surrounding contact of the cable gland (iris
spring). This requires small differences in potential, and possibly potential matching.
• Do not interrupt the shielding of the PA cable.
• Always keep the connection of the shielding as short as possible.
Ideally, cable glands with iris springs should be used for the connection of the shielding. The shield
is placed on the T-box via the iris spring that is inside the cable gland. The shielding mesh is located
under the iris spring. When the PG thread is screwed closed, the iris spring is pressed onto the
shield, making a conductive connection between the shielding and the metal housing.
A junction box or connection is to be considered part of the shielding (Faraday cage). This is
particularly true for offset boxes when these are connected to a PROFIBUS PA measuring device
using a plug-in cable. In such a case, use a metallic plug in which the cable shielding is attached to
the plug housing (such as prefabricated cables).
2
0.75 mm
PG 13.5
IP 67 in accordance with DIN 40 050 IEC 529
CuZnAu
Cu Zn, surface Ni
V - 2 in accordance with UL - 94
–
40 to +85 °C
–
40 to +150 °C
3 A
125 to 150 V DC in accordance with the VDE Standard 01 10/ISO Group 10
KC 600
≤ 8 mΩ in accordance with IEC 512 Part 2
≤ 10 Ω in accordance with IEC 512 Part 2
12
Proline Promag 53 PROFIBUS DP/PA
Endress+Hauser