Belimo TRANE TAF Series, Техническая документация инструкция

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I20683 - Subject to change.
TLF
WARNING The wiring technician must be trained and experi-
enced with electronic circuits. Disconnect power supply
before attempting any wiring connections or changes. Make
all connections in accordance with wiring diagrams and follow
all applicable local and national codes. Provide disconnect
and overload protection as required. Use copper, twisted pair,
conductors only. If using electrical conduit, the attachment to
the actuator must be made with flexible conduit.
Always read the controller manufacturer's installation
literature carefully before making any connections. Follow
all instructions in this literature. If you have any questions,
contact the controller manufacturer.
Transformer(s)
The TLF24 . . actuator requires a 24 VAC class 2 transformer
and draws a maximum of 7 VA per actuator. The actuator
enclosure cannot be opened in the field, there are no parts or
components to be replaced or repaired.
– EMC directive: 89/336/EEC
– Software class A: Mode of operation type 1
– Low voltage directive: 73/23/EEC
CAUTION: It is good practice to power electronic or digital
controllers from a separate power transformer than that used
for actuators or other end devices. The power supply design
in our actuators and other end devices use half wave rectifica-
tion. Some controllers use full wave rectification. When these
two different types of power supplies are connected to the
same power transformer and the DC commons are connected
together, a short circuit is created across one of the diodes in
the full wave power supply, damaging the controller. Only use
a single power transformer to power the controller and
actuator if you know the controller power supply uses half
wave rectification.
Multiple Actuators, One Transformer
Multiple actuators may be powered from one transformer
provided the following rules are followed:
1. The TOTAL current draw of the actuators (VA rating) is
less than or equal to the rating of the transformer.
2. Polarity on the secondary of the transformer is strictly fol-
lowed. This means that all No. 1 wires from all actuators
are connected to the common leg on the transformer and
all No 2 wires from all actuators are connected to the hot-
leg.
Mixing wire No. 1 & 2 on one leg of the transformer
will result in erratic operation or failure of the actuator
and/or controls.
Multiple Actuators, Multiple Transformers
Multiple actuators positioned by the same control signal may
be powered from multiple transformers provided the following
rules are followed:
1. The transformers are properly sized.
2. All No. 1 wires from all actuators are tied together and tied
to the negative leg of the control signal. See wiring diagram.
Wire Length for TLF… Actuators
Keep power wire runs below the lengths listed in the table in
Figure A. If more than one actuator is powered from the same
wire run, divide the allowable wire length by the number of
actuators to determine the maximum run to any single actuator.
Example for TLF24-SR:
3 actuators, 16 Ga wire
550 ft ÷ 3 actuators = 183 ft. maximum wire run
Maximum Wire Length:
Wire Size Max. Feet. Wire Size Max. Feet
12 Ga 1100 Ft. 18 Ga 260 Ft.
14 Ga 700 Ft. 20 Ga 140 Ft.
16 Ga 440 Ft. 22 Ga 75 Ft.
Figure A
Wire Type and Wire Installation Tips
For most installations, 18 or 16 Ga. cable works well with the
TLF24… actuators. Use code-approved wire nuts, terminal
strips or solderless connectors where wires are joined. It is
good practice to run control wires unspliced from the actuator
to the controller. If splices are unavoidable, make sure the
splice can be reached for possible maintenance. Tape and/or
wire-tie the splice to reduce the possibility of the splice being
inadvertently pulled apart.
The TLF24… proportional actuators have a digital circuit that is
designed to ignore most unwanted input signals (pickup). In
some situations the pickup may be severe enough to cause
erratic running of the actuator. For example, a large inductive
load (high voltage AC wires, motors, etc.) running near the
power or control wiring may cause excessive pickup. To solve
this problem, make one or more of the following changes:
1. Run the wire in metallic conduit.
2. Re-route the wiring away from the source of pickup.
3. Use shielded wire (Belden 8760 or equal).
Ground the
shield to an earth ground. Do not connect it to the
actuator common.
Brushless DC Motor Operation
The brushless DC motor spins by reversing the poles of
stationary electromagnets housed inside rotating permanent
magnets. The electromagnetic poles are switched by a
microprocessor and a special ASIC (Application Specific
Integrated Circuit). Unlike the conventional DC motor, there
are no brushes to wear or commutators to foul.
Installation Instructions
General Wiring
TLF24 (-S)
TLF24-SR / TLF24-3
Wire Size Max. Feet. Wire Size Max. Feet
12 Ga 1500 Ft. 18 Ga 375 Ft.
14 Ga 925 Ft. 20 Ga 200 Ft.
16 Ga 550 Ft. 22 Ga 100 Ft.