Burkert Type 8681 - Manual (Page 6)

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Electrical Data 9.2.
Power supply: 12 ... 28 V DC, residual ripple 10 %
Power consumption:
(standby current):
30 mA at 24 V DC
Solenoid valves:
Power input per max. 0.8 W
solenoid valve:
(0.9 W during activation)
Operating mode: Long-term operation (100 %)
Central display of the
switching states:
42 mA with a power supply of
24 V DC per illuminated display;
Outputs/binary
feedback signals:
S1 out - S4 out
Design: Normally open contact, PNP output
short-circuit-proof, with self-clocking
short-circuit protection
Switchable
output current:
max. 100 mA per feedback signal
Option: Analog feedback signal:
Signal output:
S3 out (binary feedback signal
S3out not available)
Type: Current source (4 to 20 mA)
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Input / proximity switches (external initiator: S4 in):
Power supply:
Voltage present at control head - 10 %
Current carrying
capacity, sensor
power supply:
max. 90 mA;
short-circuit protection
Design: DC 2- and 3-conductor, NO or NC
(factory setting NO), PNP output
Valve control inputs (Y1 - Y3):
Signal level - active: U > 10 V, max. 24 V DC + 10 %
Electrical Installation 9.3. (24 VDC)
WARNING!
Risk of injury due to electrical shock!
Before reaching into the system (except for the •
Teach-In procedure 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!
Risk of injury from improper installation!
Installation may be carried out by authorized techni- •
cians only and with the appropriate tools!
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Cable glands:
Open the housing.

Assemble connection cables for signals and power

supply as well as for the external initiator.
Insert cables through the respective cable glands into

the interior of the housing.

Secure the wires to the terminal strips according to the
pin assignments depicted in the fi gure.
Solenoid valve
connection
with status
LED for SV1
Terminal strip 1
Service
interface
DIP switches
for color
coding the
LED‘s
Terminal strip 2
(for external
initiator)
Teach-In-
buttons T1-3
SV-connections
with status LED
for SV2, 3
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Terminal strip 1 Confi guration
24 V Power supply 24 V
GND GND
S1 OUT Output position 1
S2 OUT Output position 2
S3 OUT Output position 3
(Option: analog signal)
S4 OUT Output external initiator
Y1 Input solenoid valve 1
Y2 Input solenoid valve 2
Y3 Input solenoid valve 3
Terminal strip 2 Confi guration
24 V Power supply 24 V for external
initiator
S4 IN Input external initiator
GND GND external initiator
Close the housing

.
Ensure IP protection

(dummy plugs)!
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Type 8681