Belimo TRANE TAF Series, Technical Documentation Manual

Page: 33 / 168

33
I20683 - Subject to change.
TNF
TNF24-SR
Proportional Damper Actuator, Spring Return Fail-Safe, 24 V for 2 to 10 VDC, or 4 to 20 mA Control Signal.
Output Signal of 2 to 10 VDC for Position Indication
TNF24-SR Typical Specification
Spring return control damper actuators shall be direct
coupled type which require no crankarm and linkage and
be capable of direct mounting to a jackshaft up to a 1.05”
diameter. The actuator must provide proportional damper
control in response to a 2 to 10 VDC or, with the addition
of a 500
Ω
resistor, a 4 to 20 mA control input from an
electronic controller or positioner. The actuators must be
designed so that they may be used for either clockwise or
counterclockwise fail-safe operation. Actuators shall use a
brushless DC motor controlled by a microprocessor and be
protected from overload at all angles of rotation. Run time
shall be constant, and independent of torque. A 2 to 10 VDC
feedback signal shall be provided for position feedback or
master-slave applications. Actuators are UL listed and CSA
certified and be manufactured under ISO 9001 International
Quality Control Standards. Actuators shall be
as manufactured by Belimo.
Wiring Diagrams
Control Signal
(+)
2 to 10 VDC
(–)
1 Common
2 + Hot
3 Y1 Input,
2 to 10V
5 U Output
2 to 10V
2 3
24 VAC Transformer
TNF24-SR
Line
Volts
WARNING
Live Electrical Components!
During installation, testing, servicing and troubleshooting of this product, it maybe
necessary to work with live electrical components. Have a qualified licensed electrician
or other individual who has been properly trained in handling live electrical components
perform these tasks. Failure to follow all electrical safety precautions when exposed
to live electrical components could result in death or serious injury.
1 Common
2 + Hot
3 Y
1
Input,
2 to 10V
5 U Output
2 to 10V
24 VAC Transformer
5 3 2
TNF24-SR
Control Signal (+)
4 to 20 mA
(–)
Feedback Signal (+)
2 to 10 VDC
(–)
Ω
500
Ω
Line
Volts
To other
actuators
WARNING
Live Electrical Components!
During installation, testing, servicing and troubleshooting of this product, it maybe
necessary to work with live electrical components. Have a qualified licensed electrician
or other individual who has been properly trained in handling live electrical components
perform these tasks. Failure to follow all electrical safety precautions when exposed
to live electrical components could result in death or serious injury.
4 to 20 mA control of TNF24-SR with 2 to 10 VDC
feedback output
0 to 10 VDC control of TNF24-SR
W456
W457
CAUTION
INSTALLATION NOTES
2
Equipment damage!
Up to 4 actuators may be connected in parallel.
With 4 actuators wired to one 500
Ω
resistor.
Power consumption must be observed and input
impedance must be observed.
3
5
Actuator may also be powered by 24 VDC.
Only connect common to neg. (—) leg of
control circuits
APPLICATION NOTES
Meets cULus or UL and CSA requirements without
the need of an electrical ground connection.
The ZG-R01 500
Ω
resistor converts the 4 to 20 mA
control signal to 2 to 10 VDC.