Burkert Type 8622 - Manual (Page 2)

INST ALLA TION
GUIDE T O CONTROLS
Step Three
Step Four
Power indicator: This green LED lights when AC power is ON.
Relay indicator: This red LED will light whenever the controller energizes
the relay, in response to the proper condition at the sensor input and after
the time delay.
Power terminals:
AC Version: Connection of 240 VAC power to the controller. The setting
may be changed to 120 VAC if desired. This requires changing internal
jumpers; this is covered in the Installation section of the manual. Polarity
(neutral and hot) does not matter.
DC version: The terminals are located under the circuit card faceplate. For
access to the terminals, remove the single screw which holds the faceplate
to the enclosure. Then, carefully lift the circuit card from the slots in the
enclosure. The two DC power terminals are on the tall, removeable 2-pole
block on the opposite side of the relay from the 3-pole relay block. Insert
the (-) wire into the terminal next to the bottom of the card, and the (+) wire
into the second terminal.
Relay terminals (NC, C, NO):
AC version: The relay terminals are on a 3-pole block.
DC version: The relay terminals are on a tall 3-pole block next to the relay.
Connect the device you wish to control (pump, alarm etc.) to these
terminals: supply to the COM terminal, and the device to the NO or NC
terminal as required. The switched device should be a noninductive load of
not more than 12 amps (AC version), 6 amps (DC version); for reactive
loads the current must be derated or protection circuits used. When the
red LED is ON and the relay is in the energized state, the NO terminal will
be closed and the NC terminal will be open.
Invert switch: This DIP switch reverses the logic of the relay control in
response to the sensor: conditions that used to energize the relay will
make it turn off and vice versa.
Time Delay: After the input changes state, this control sets a delay from
0.15 to 60 seconds before the relay will respond.
Input 1A indicator: This amber LED will indicate a flow or no-flow
condition from the flow switch. With a Normally Closed switch, the LED will
be on for no-flow and off for flow. With a Normally Open switch, the LED
will be on for flow and off for no-flow.
Input terminals: Connect the wiring from the switch to these terminals:
Note the polarity:
AC and DC version: (+) is a 24 VDC, 100 mA power supply (typically
connected to the red wire of a Bürkert switch), and (-) is the ground for the
circuit (typically connected to the black wire of a Bürkert sensor). (S) is the
14 VDC switch terminal (typically connected to the white wire of a Bürkert
sensor). If polarity is reversed between the Red and Black wires, the
status of the FET switch will be reversed.
3/4" BSP Mounting Thread
Installation of the compact relay controller takes advantage of the 3/4" BSP
thread located on its base. This makes the controller fully compatible with
any of Bürkert's level switches or Smart Trak™ or Switch Pak™ mounting
systems.
Switch Cable
When installing a Bürkert level switch, adjust the
cable away from the printed circuit boards in the
controller body. Avoid breaking the seal between
the top of the level switch and the plastic coated
cable.
Changing from 240 to 120 VAC
First, remove the printed circuit board from the controller body. Use caution
when removing the PCB. Locate jumpers JWA, JWB and JWC on the end
of the PCB. To change to 120 VAC, remove jumper JWA and place jumpers
across JWB and JWC. To change to 240 VAC, remove jumpers from JWB
and JWC and place a single jumper across JWA.
240 VAC
JWB
JWC
120 VAC
JWB
JWC
JW
A
JW
A
Always tighten the controller
from the wrench flat located on
the swivel base. Never tighten
from the body of the controller.
N ote: The 8622-A1M (417965K) requires that an "N-Channel" Thermo-
Flow switch be used. The 8622-A1M will not work with the "P-Channel"
Flow switch.
25.5 mm
76.6 mm
AC version:
GND AC AC
R
P
DELAY
Rela
y
Com NO NC
I ( ON/OFF) L (ON/OFF)
DC version:
Invert Switch
Delay
Relay
- +
NC
Com
NO
DC
Power
SW
+
Com
-
(S) (-) (+)
(S) (+) (-)
F L O W L I N E F L O W L I N E
3"
1"
F L O W L I N E F L O W L I N E F L O W L I N E
F L O W L I N E
14
VDC
24
VDC
4-20 mA
100 mA
Switch GND