Owner manual

66
Connection of an External Initiator
CONNECTION OF AN EXTERNAL INITIATOR14.
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
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Control Head Type 8681