Connection Of An External Initiator - Burkert 8681 Operating Instructions Manual

Control Head Type 8681
ConnectionofanExternalInitiator
14.

CONNECTION OF AN EXTERNAL INITIATOR

DANGER!
Danger of explosion in explosive atmosphere (only in the event of a fault as zone 2)!
• Opening the hood or the housing in an explosive atmosphere is only allowed in a not energized state!
Designation of the screw terminals on the different electronics modules:
Designation - according to design
24 V DC, AS-i
24 V
S4 IN
GND
Electrical requirements of the external initiator for different designs:
The electrical requirements of the external initiator can be found in the respective subchapters "Electrical
data" under the headword "Input / proximity switch (external initiator: S4 in)":
Design 24 V:
AS-i design:
Procedure when connecting the external initiator:
→
Open the housing following the instructions in Chapter "8. Opening and Closing the Housing".
→
Assemble the connection cables according to the general rules of technology.
→
Insert cables through the cable gland (connection on right) into the interior of the housing.
→
Connect the wires to the connection terminals according to the pin assignment.
→
Close the housing following the instructions in Chapter "8. Opening and Closing the Housing".
An external initiator can be connected via the 3-fold screw terminal - at bottom
right on the respective electronics module (in the example: AS-i).
Due to the size of the screw terminals, the wire cross-sections of the
external initiator have the following values for the different designs:
0.14 ... 1.5 mm²
0.5 ... 1.5 mm²
Fig. 33: Screw terminal for external initiator
DevNet 120 V AC
V+ L
S4 IN S4 IN
GND N
see Page 36, DeviceNet design:
see Page 45, 120 V design:
for design: 24 V, AS-i, DeviceNet;
for design: 120 V
Configuration
Power supply - according to design!
External initiator input
GND external initiator (24 V DC, AS-i, DevNet) or
power supply (120 V AC design)
see Page 54,
see Page 65.
English
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