Burkert Type 8622 - Manual (Page 3)

HOT
NTRL
GND
GND AC AC NO C NC GND AC AC NO C NC
HOT
NTRL
GND
INST ALLA TION TROUBLESHOOTING
Step Five Step Six
Switch Wiring for 8622
NO Wiring NC Wiring
120/240 VAC Wiring
Polarity does not matter with the AC connections.
Controller Logic
For all controllers, please use the following guide to understand
the operation of the Bürkert 8622 controller.
1. Make sure the Green power LED is On when power is
supplied to the controller.
2. The input LED is always controlled by the flow switch. When
the flow switch is wired NC, the LED will be OFF during a flow
condition and will be ON during a no-flow condition. When the
flow switch is wired NO, the LED will be ON during a flow
condition and will be OFF during a no-flow condition (see
illustration below).
3. The relay LED ON indicates when the relay is energized. The
relay LED OFF indicates the relay is de-energized. With the
invert switch OFF, the relay is de-energized when the input
LED is OFF and the relay is energized when the input LED is
ON. With the invert switch in the ON position, the relay is
energized when the input LED is OFF and the relay is de-
energized when the input LED is ON.
Note: The normal state of the relay is de-energized. When the
relay becomes energized, the normally closed side of the
relay becomes open and the normally open side of the relay
becomes closed (see illustration below).
HOT
NTRL
GND
GND AC AC NO C NC GND AC AC NO C NC
HOT
NTRL
GND
White
Red
Black
Shield
Normally Closed
N-Channel switch
Typical wiring for Flow
switches. Amber LED will light for no-
flow condition and will be off for flow
conditions.
Black
Red
White
Shield
White
Red
Black
Shield
Normally Open
N-Channel switch
Amber LED will light for flow
condition and will be off for no-flow
conditions.
(8622-A..):
AC version
(8622-D..):
DC version
(8622-A..):
AC version
(8622-D..):
DC version
R R
R R
NC
C
NO
NC
C
NO
NC
C
NO
NC
C
NO
Invert Off
De-energized
Invert On
De-energized
Invert Off
Energized
Invert On
Energized
White
Black*
Red*
input 1A
White
Black*
Red*
input 1A
White
Black*
Red*
input 1A
White
Black*
Red*
input 1A
NC Wiring
ON
NC Wiring
OFF
NO Wiring
OFF
NO Wiring
ON
Version AC (8622-A..)
* For Version DC (8622-D..) Reverse Red abd Black wires on
input terminals. Led is on facecover.
Black
Red
White
Shield