Belimo TRANE TAF Series, Техническая документация инструкция

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152
I20683 - Subject to change.
Understanding Wiring Diagrams
Fig. II-4
COM
⊥
(+)
(–)
0 to 10 V
OUTPUT 2
OUTPUT 3
CONTROLLER
Analog Output Board
0 to 10 V
(+)
(–)
(+)
(–)
OUTPUT 1
0 to 10 V
0 to 10 V
**
⊥
⊥
⊥
*
JUNCTION BOX
3
2
1
3
2
1
3
2
1
COM
⊥
24 VAC
HOT ~
TRANSFORMER
L
I
N
E
ALL THE
COMMON ON
THE
CONTROLLER
ARE ASSUMED
TO BE
INTERNALLY
CONNECTED.
L
I
N
E
ALWAYS USE A SEPARATE
TRANSFORMER FOR THE
CONTROLLER UNLESS YOU
KNOW A HALF-WAVE
RECTIFIER IS USED!
ACTUATOR
ACTUATOR
ACTUATOR
THESE WIRES SHOULD BE RELATIVELY
SHORT, BECAUSE THE WIRES BETWEEN
THE JUNCTION BOX AND THE
ACTUATORS CARRY AC POWER.
SEE SECTION I-L FOR WIRE SIZING.
THESE WIRES CAN BE LONG BECAUSE
THE WIRES BETWEEN THE CONTROLLER
AND THE JUNCTION BOX CARRY A VERY
LOW LOAD (SEE SECTION IIC “SIGNAL
LOSS”. THEREFORE, THE WIRE LENGTH
AND SIZE IS OF NO CONCERN.
(MAKE CERTAIN THAT A SUFFICIENT
NUMBER OF WIRES ARE AVAILABLE.
ESPECIALLY IN THE CABLE BETWEEN
THE CONTROLLER AND THE JUNCTION
BOX. IT IS PRUDENT TO HAVE A FEW
EXTRA WIRES, JUST IN CASE.)
*
**
II-D. Long Distance Wiring
Fig. II-5 A Common Wiring Problem
(+)
(+)
OUTPUT 2
OUTPUT 3
CONTROLLER
Analog Output Board
0 to 10 V
(+)
OUTPUT 1
0 to 10 V
0 to 10 V
*
*
GROUND
LOOP
COM
⊥
24 V
A
C
HOT
~
TRANSFORMER
(–)
⊥
(–)
⊥
⊥
(–)
3
2
1
3
2
1
3
2
1
GROUND
LOOP
L I N E
L
I
N
E
ALL THE
COMMON ON
THE
CONTROLLER
ARE ASSUMED
TO BE
INTERNALLY
CONNECTED.
COM
⊥
ALWAYS USE A SEPARATE
TRANSFORMER FOR THE
CONTROLLER UNLESS YOU
KNOW A HALF-WAVE
RECTIFIER IS USED!
ACTUATOR
ACTUATOR
ACTUATOR
*
DO NOT CONNECT
REDUNDANT
COMMON WIRES!
Wiring in this manner will
cause ground loops. Also,
there will be a short if the
connections to terminals #1
and #2 on one of the actuators
are crossed by mistake. This
may damage the controller,
actuator or transformer.
II-E. Wiring Mistakes
Fig. II-6 Correct Wiring
(+)
(+)
OUTPUT 2
OUTPUT 3
CONTROLLER
Analog Output Board
0 to 10 V
(+)
OUTPUT 1
0 to 10 V
0 to 10 V
COM
⊥
24 V
A
C
HOT
~
TRANSFORMER
(–)
⊥
(–)
⊥
⊥
(–)
3
2
1
3
2
1
3
2
1
L I N E
L
I
N
E
ALL THE COMMON
ON THE
CONTROLLER
ARE ASSUMED TO
BE INTERNALLY
CONNECTED.
COM
⊥
0 to 10 V
ALWAYS USE A SEPARATE
TRANSFORMER FOR THE
CONTROLLER UNLESS YOU
KNOW A HALF-WAVE
RECTIFIER IS USED!
ACTUATOR
ACTUATOR
ACTUATOR
Wiring in this manner gives
the following advantages:
Ground loops are eliminated.
The number of wires is
reduced.
If wires #1 and #2 of an
actuator are crossed by
mistake, the actuator will not
work properly but no damage
will occur. Resolve the
problem by rewiring in the
correct manner.
•
•
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