Electrical Installation As Interface - Burkert 8681 Quick Start Manual

AS-i-Design
Central display of the switching states:
Power consumption:
Power supply via AS interface bus:
Power consumption from
AS interface:
Integrated short-circuit protection
External Power Supply for the solenoid valves:
Ext. power supply:
The power supply unit must include a secure disconnect in
accordance with IEC 364-4-41. It must conform to the SELV
standard. The ground potential may not have an earth connection.
Max. power consumption
from external power supply: ≤ 110 mA at 24 V DC
Integrated short-circuit protection
9.5. Electrical installation AS Interface
WARNING!
Danger of explosion in explosive atmosphere (zone 2)!
• See the note DANGER at chapter "8.3", page 14!
Risk of injury due to electrical shock!
• Before reaching into the system (except for the Teach-In proce-
dure in a non-explosive atmosphere) switch off the power supply
and secure it to prevent restarting! Observe applicable accident
prevention and safety regulations for electrical equipment!
Type 8681
max. 33 mA or 1 W per illuminated
display (at 30.5 V AS-i voltage)
max. 200 mA (incl. external
initiator with 30 mA)
19.2 V DC to 31.6 V DC
Risk of injury from improper installation!
• Installation may be carried out by authorized technicians only and
with the appropriate tools!
Internal cabling work is not required for any of the AS Interface designs
with multi-pole connection. However, you will require the correspon-
dingly assembled cable sets with the following pin assignments.
Pin 2
Pin 3
Fig. 6: Multi-pole connection AS-i
Likewise, the jumpers on the electronics module must be set corres-
pondingly (power supply of the solenoid valves via AS-i or externally)
- see page 16
Power supply of solenoid valves
(via AS-i) (externally)
Pin Configuration Configuration
1 AS-i+
2 not used
3 AS-i-
4 not used
An external initiator can be connected using the small 3-pin terminal
strip 2 - see manual, chapter „Connection of an external initiator".
english
Pin 1
Pin 4
Color
AS-i+ brown
GND white
AS-i- blue
24 V+ black
17