125
Connection of an External Initiator
18
CONNECTION OF AN EXTERNAL INITIATOR
DANGER!
Danger of explosion in a potentially explosive atmosphere (only in the event of a fault as zone 2)!
`
Opening the hood or the housing in a potentially explosive atmosphere is only allowed in a not ener-
gised state!
An external initiator can be connected via the 3-fold screw terminal - at
bottom right on the respective electronic 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 for designs: 24 V DC, AS-i, DeviceNet;
IO-Link, büS/CANopen
0.5 ... 1.5 mm² for design: 120 V AC
Fig. 46:
Screw terminal for external initiator
Designation of the screw terminals on the different electronic modules:
Designation - according to design
Configuration
24 V DC,
AS-i
DevNet, IO-Link,
büS/CANopen
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)
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 DC: see Page 40,
120 V AC design: see Page 47
AS-i design: see Page 55,
DeviceNet design: see Page 64,
IO-Link design: see Page 75,
büS/CANopen:
see Page 85.
Procedure when connecting the external initiator:
→
Open the housing following the instructions in chapter
“8 Opening and Closing the Housing”
english
Control Head Type 8681
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