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 CAUTION

Risk of Property Damage

Do not apply power to the system before checking all

wiring connections. Improper wiring of this terminal

may cause a short circuit across the 24 VAC power

supply on VMA models. A short circuit may result in a

tripped circuit breaker or blown fuse. If using a trans-

former with a built-in fuse, the transformer may need

to be replaced.

 ATTENTION

Risque de dommages matériels

Ne mettez pas l’appareil sous tension avant d’avoir

vérifié toutes les connexions du câblage. Le câblage

inadéquat de cette borne peut causer un court-cir-

cuit sur l’alimentation électrique de 24 V c.a. des VMA

modèles. Un court-circuit peut causer le déclenche-

ment du disjoncteur ou le grillage d’un fusible. Si vous

utilisez un transformateur avec un fusible intégré,

vous pourriez devoir remplacer le transformateur.

To wire the controller, complete the following steps:

1.  Terminate wiring according the appropriate

figure in 

Termination diagrams

.

2.  Wire network sensors and other devices to the

VMA's SA Bus.

3.  Wire the FC Bus in a daisy chain.

4.  Ensure that the device address DIP switches

are set to the appropriate device address (See

Setting the controller number

). Also, activate

the EOL switch if necessary.

5.  Connect the controller to 24 VAC, Class 2 power.

Note: 

If you are using the

VMA1615/1626/1628/1630 controller with

the Wireless Field Bus System, refer to the

WNC1800/ZFR182x Pro Series Wireless Field Bus

System Bulletin (LIT-12012320

) or the 

ZFR Series

Wireless Field Bus System Bulletin (LIT-12011336

).

Terminal wiring guidelines,
functions, ratings, and
requirements

Input and Output wiring guidelines

See Table 3 for information about the functions,

ratings, and requirements for the input and output

terminals, and for wire sizes and cable lengths

guidelines.
In addition, observe the following guidelines when

wiring inputs and outputs:
• Run all low-voltage wiring and cables separate

from high-voltage wiring.

• All input and output cables, regardless of wire

size or number of wires, should consist of twisted,

insulated, and stranded copper wires.

• Shielded cable is not required for input or output

cables but is recommended for input and output

cables that are exposed to high electromagnetic

or radio frequency noise.

• Cable runs of less than 30 m (100 ft) typically do

not require an offset in the input/output software

setup.

• Cable runs over 30 m (100 ft) may require an

offset in the input/output software setup.

VMA1930 VAV Controller Installation Guide

8

Содержание VMA1930

Страница 1: ...ence when this equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction m...

Страница 2: ...Table 3 5 Dual Port Fitting 6 Manual Override Button see Mounting for information about using manual override Button 7 Controller Coupler see Mounting for information about using the controller couple...

Страница 3: ...0mA Analog Input Resistive Mode 0 2k ohm RTD 1k NI Johnson Controls 1k PT A998 SI NTC 10k Type L 2 252k Type 2 Binary Input Dry Contact Maintained Mode 3 Binary Output BO 24 VAC Triac 3 Configurable O...

Страница 4: ...ller so that the enclosure walls do not obstruct cover removal or ventilation through the controller Mount the controller so that the power transformer and other devices do not radiate excessive heat...

Страница 5: ...ing an 8 mm 5 16 in wrench or 10 mm 3 8 in 12 point socket Tighten to 10 5 to 11 5 N m 95 to 105 lb in 9 Skip this step if you are installing the VMA1626 model Loop the pneumatic tubing supplied by fi...

Страница 6: ...port Benefits of daisy chained networks are that they require less physical wiring and new devices can be added easily to the network In a star network each VMA1930 controller is connected by Ethernet...

Страница 7: ...inal block is a gray removable 2 terminal plug that fits into a board mounted jack on the upper left of the VMA controller Wire the 24 VAC supply power wires from the transformer to the HOT and COM te...

Страница 8: ...dress See Setting the controller number Also activate the EOL switch if necessary 5 Connect the controller to 24 VAC Class 2 power Note If you are using the VMA1615 1626 1628 1630 controller with the...

Страница 9: ...1k Platinum and A99B Silicon Temperature Sensor Negative Temperature Coefficient NTC Sensor 10K Type L 10K Johnson Controls Type II is equivalent to Type L or 2 252K Type II See Guideline A in Table 4...

Страница 10: ...s Table 4 Cable length guidelines Guideline Wire size Gauge and type Maximum cable length and type Assumptions 1 0 mm 18 AWG stranded copper 457 m 1 500 ft twisted wire 0 8 mm 20 AWG stranded copper 2...

Страница 11: ...Communications COM SA Bus Signal Reference and 15 VDC Common SA BUS 2 2 POWER 15 VDC Supply Power for Devices on the SA Bus 0 6 mm 22 AWG stranded 4 wire 2 twisted pairs shielded cable recommended No...

Страница 12: ...the figures in this section for the applicable termination diagrams Table 6 Termination details Type of field device Type of Input Output Termination diagrams Voltage Input External Source UI Voltage...

Страница 13: ...uator External Source CO 24 VAC Triac Output Switch Low External Source CO Note Applies to CO4 and CO5 Incremental Control to Actuator Switch Low External Source CO Note Applies to CO4 and CO5 Analog...

Страница 14: ...ing the controller Setting the controller number Each controller on a network must have a unique number on the subnet where it resides in order to identify it in the Controller Tool for uploading down...

Страница 15: ...tions on the input and output terminals including the integrated DPT It assumes all Universal Inputs UIs are Nickel temperature sensors All Configurable Outputs COs are treated as Binary Outputs BOs w...

Страница 16: ...uses to trip make sure that the power connections on theVMA1930 are not reversed The most common cause of this problem is when the 24 VAC power supply on the VMA1930 is reversed but not reversed on a...

Страница 17: ...Transformer to be Earth Grounded If this is the case verify that the Earth Ground connection is valid and not shared between multiple pieces of equipment Configurable output analog mode is invalid 0 1...

Страница 18: ...cm 30 in Primary Leads and 76 2 cm 30 in Secondary Leads Class 2 Y65A13 0 Transformer 120 VAC Primary to 24 VAC Secondary 40 VA Foot Mount Y65AS 20 32 cm 8 in Primary Leads and 76 2 cm 30 in Secondar...

Страница 19: ...een 001 and 999 Communications Bus Two Ethernet ports 10 100 Mbps 8 pin RJ 45 connector SA Bus 0 6 mm 22 AWG stranded 4 wire 2 twisted pairs shielded cable recommended from the VMA controller for netw...

Страница 20: ...nced Application Controller B AAC based on the ANSI ASHRAE 135 2016 The performance specifications are nominal and conform to acceptable industry standard For application at conditions beyond these sp...

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