Burkert Type 8681 - Manual (Page 11)

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120 V AC - DESIGN 12.
Connection 12.1.
left connection:
1 x M16 x 1,5 cable gland for
power supply and signals
right connection:
1 x M16 x 1,5 cable gland for
external initiator
Electrical Data 12.2.
Central power supply: 110 ... 130 V AC, 50/60 Hz
Power consumption
(stnd-by current):
10 mA at 120 V AC
Solenoid valves:
power
consumption
per solenoid valve: max. 1,4 VA
(1,7 VA during activation)
power consumption
per solenoid valve: 12 mA at 120 V AC
Operation mode: Long-term operation (100 %)
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Central display of the switching states:
13 mA with a power supply of
120 V AC per illuminated display
Outputs/binary
feedback signals:
S1out - S3out
Design: NO contact, L switching,
short-circuit protection via auto-
matically resetting fuse
switchable output
current:
max. 50 mA per feedback signal
Output voltage
- active:
 (operating voltage - 2 V)
- inactive: max. 1 V in unloaded state
Feedback signal output: S4 out is directly connected to
S4
in
Input / proximity switches (external initiator: S4 in):
Power supply:
voltage present at control head
U
Nominal
= 120 V AC, 50/60 Hz
Current carrying capacity,
sensor power supply:
max. 0.7 A
Short-circuit protection
Design: DC 2- and 3-conductor,
NO contact, L-switching
input current 1-Signal: I
Sensor
< 2 mA
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Valve control inputs (Y1 - Y3):
Signal level - active:
U > 60 V AC
Signal level - inactive: U < 20 V AC
Impedance: > 40 kOhm
Electrical Installation 12.3.
WARNING!
Risk of injury due to electrical shock (120 V AC)!
When setting the position measuring system •
(Teach-In), do not contact any live components!
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!
the • PE connection must be connected!
Installation may be carried out by authorized techni- •
cians only and with the appropriate tools!
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Cable gland:
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.
Connect the wires to the connection terminals

according to the pin assignment described in the
fi gure. Fix them.
connection
for valve 1
with status
LED
terminal
strip 1
service
interface
DIP-switches
for color
coding the
LED‘s
terminal strip 2
(external
initiator)
Teach-In-
buttons
T1-3
connections for
valve 2, 3 with
status LED
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Type 8681