| Вид документа | Прикладна нотатка |
|---|---|
| Виробник | JCI |
| Код документа | va-7152-proportional-reheat-control-application-note |
| Група обладнання | VA-7152 Proportional Reheat Control |
| Сторінок | 2 |
| Мова документа | англійська |
| Розмір файлу | 0.0 МБ |
Текст документа
FANs 977, 125, 1628.3
Application Note 7150
Issue Date 0395
APPLICATION NOTE
VA-7152 Proportional Reheat Control
This application for the VA-7152 Electric Valve
Actuator provides control for reheat operations. This
may also include baseboard heat. It is for use with
proportional controllers. Obtain the system diagrams
for controller installation to verify proper terminals for
each actuator.
Terminal Function
1 24 VAC Supply Voltage
2 Power Common
3 Signal Common
4 Input Control Signal Figure 1: Typical Reheat Configuration
Note: Terminals 2 and 3 are tied together on the
circuit board.
Application Calibration
Values Values
0 - 10 1-9
0-5 1-4
5 - 10 6-9
Note: Use of the calibration values in the table
above will ensure proper shut off throughout Figure 2: Using Voltage Controller
the life of the valve (accounts for seat wear).
DA: full up (minimum voltage)
RA: full up (maximum voltage)
Input Control Signal Actuator
DA RA Coupler
Increase Decrease Extends
Decrease Increase Retracts
Note: Follow wiring and termination instructions
detailed in the applicable controller manual.
Figure 3: Using Current Controller
© 1995 Johnson Controls, Inc. 1
Part No. 34-636-526
Code No. LIT-977318
Figure 6: Sequencing or Parallel Operation Using
Figure 4: Sequencing Application Current Controller
! CAUTION: Observe polarity when using
multiple actuators on a single
transformer.
Note: These applications may be used in
combination with Johnson Controls VA-7202,
VA-8052, and VA-8022 electric valve
actuators.
Figure 5: Sequencing or Parallel Operation Using
Voltage Controller
For application at conditions beyond these specifications, consult the local Johnson Controls office. Johnson Controls, Inc. shall not be liable for damages
resulting from misapplication or misuse of its products.
Controls Group
507 E. Michigan Street
P.O. Box 423
Milwaukee, WI 53201 Printed in U.S.A.
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