Burkert Type 8681 - Manual (Page 66)

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Connection of an External Initiator
COnneCTiOn Of an exTernal iniTiaTOr 14.
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 the isolated state! •
An external initiator can be connected using the small 3-pin screw terminal - according to the respective design -
(see e.g. Fig. 25 and the respective chapter "Electrical Installation").
designation - according to design configuration
24 V dc, as-i devnet 120 V ac
24 V V+ L Power supply - according to design!
S4 IN S4 IN S4 IN External initiator input
GND GND N GND external initiator (24 V DC, AS-i, DevNet) or
power supply (120 V AC design)
For the electrical requirements for the external initiator refer to chapter entitled 6. Technical Data.
procedure:
Open the housing observing the notes contained in chapter
→
8. Opening and Closing the Housing.
Assemble the connecting cables according to the general rules of technology.
→
Insert cables through the respective cable glands into the interior of the housing.
→
Connect the wires to the connection terminals according to the pin assignment.
→
Close the housing observing the notes contained in chapter
→
8. Opening and Closing the Housing.
note!
ensure ip protection!
To ensure IP protection, the union nuts of the cable glands must be tightened in accordance with the cable •
sizes or dummy plugs used (approx. 1.5 Nm).
If an external initiator is not used, the cable gland (wrench size 19, Ø 3 - 6 mm) must be tightly sealed with •
the dummy plug (Ø 5 - 6 mm) supplied from the factory!
use of the control head in explosive atmosphere
Only use cables and cable glands that are allowed for the respective application area, and mount the cable •
gland according to the respective operating instructions!
Close all unnecessary openings with lock screws/plugs approved for explosions area! •
Connection of a 2-wire or 3-wire initiator:
Connection of a 2-wire initiator: Connection of a 3-wire initiator:
24 V dc, as-i devnet 120 V ac 24 V dc, as-i devnet 120 V ac
english
Control Head Type 8681