19
Wiring diagram for the sensor plug-in connectings
Fig. 9
g
Electrical Connection
- continued -
Fig. 10
RES 1
Fig. 11
RES 2
$
Mains supply
%
MAX limit, safety circuit
&
Continuous blowdown valve CLOSED / OPEN
/
MIN limit / intermittent blowdown
(
Actual value output 4-20 mA (optional)
)
Feedback potentiometer
=
Contact in burner control, if stand-by function is
desired. Terminal 7/8
ä
voltage input 24 V AC/DC
for external command; contact closed, control
OFF, valve CLOSED, intermittent blowdown OFF
[stand-by] (May come from the bus supply).
For DC: Observe polarity!
a
Terminating resistor 120 Ω, RES 1 or RES 2
b
CAN bus line, twisted pair control cable
c
Intermittent blowdown valve
Key
d
Continuous blowdown valve
e
Pin 1: Screen
f
Pin 2: Voltage supply 24 V DC+ (red)
g
Pin 3: Voltage supply 24 V DC– (black)
h
Pin 4: CAN data line C
H
(white)
i
Pin 5: CAN data line C
L
(blue)
h
e
i f f g
e
i h a
a
Содержание LRR 1-40
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