Johnson Controls MS-VMA1826 series Installation Instructions Manual Download Page 9 | Manualshive

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Table 2: Termination Details

Termination Diagrams

Type of
Input/Output

Type of Field
Device

UI

Temperature Sensor

UI

Dry Contact

CO

0–10 VDC Output to
Actuator (External
Source)

CO

0–10 VDC Output to
Actuator (Internal
Source)

Note:

Only applies to CO4 and CO5.

CO

24 VAC Triac Output
(Switch Low,
External Source)

Note:

Applies to CO4 and CO5.

CO

Incremental Control
to Actuator (Switch
Low, External
Source)

9

VMA1826/1832 VAV Controller Installation Instructions

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Summary of Contents for MS-VMA1826 series

Page 1: ...installation and efficient use of space for field replacements while still enabling precision control performance Note Connecting an IOM to the VMA via the SA Bus connection is not supported For information about sensor compatibility and replacement see Sensor Replacement and Reuse Scenarios North American Emissions Compliance United States This equipment has been tested and found to comply with t...

Page 2: ...to mount the VMA securely and evenly on the mounting surface Mount the VMA in an area free of corrosive vapors that matches the ambient conditions specified in the Technical Specifications section Provide sufficient space around the VMA for cable and wire connections and adequate ventilation through the controller 50 mm 2 in minimum on the top bottom sides and front of the controllers Do not mount...

Page 3: ...stops must be provided at both fully closed and fully open damper positions By installing the VMA controller at the fully open position the VMA controller provides the open stop for 45 and 60 boxes The closed damper seal provides the fully closed stop 7 Tighten the square coupler bolt to the shaft using 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...

Page 4: ...Figure 3 VMA18 Series Controller Wiring Terminations and Physical Features 4 VMA1826 1832 VAV Controller Installation Instructions ...

Page 5: ...iring Risk of Electric Shock Disconnect the power supply before making electrical connections to avoid electric shock Mise En Garde Risque de décharge électrique Débrancher l alimentation avant de réaliser tout raccordement électrique afin d éviter tout risque de décharge électrique Important Do not connect supply power to the controller before finishing wiring and checking all wiring connections ...

Page 6: ...e Shield terminal SHLD on the N2 FC Bus terminal block is isolated and can be used to connect the cable shields on the bus Figure 4 SA Bus Spade Lugs Wire the SA Bus spade lugs on the VMA and other SA Bus devices in a daisy chain configuration using 4 wire twisted shielded cable as shown in Figure 5 See Table 6 for more information Figure 5 SA Bus Spade Lug Wiring Note Connecting an IOM to the VMA...

Page 7: ...h ground connection However when grounding the secondary of the 24 VAC transformer is required only one connection to ground should be made near the transformer Figure 8 Transformer Grounding Improper wiring of this terminal may cause a short circuit across the 24 VAC power supply on 1 models To wire the VMA18 Series controller complete the following steps 1 Terminate wiring per engineering drawin...

Page 8: ...guidelines in Table 6 observe these guidelines when wiring the SA and N2 FC Buses and supply power Run all low voltage wiring and cables separate from high voltage wiring All N2 FC and SA Bus cables regardless of wire size should be twisted insulated stranded copper wire Shielded cable is strongly recommended for all N2 FC and SA Bus cables Refer to the N2 Communications Bus Technical Bulletin LIT...

Page 9: ...act CO 0 10 VDC Output to Actuator External Source CO 0 10 VDC Output to Actuator Internal Source Note Only applies to CO4 and CO5 CO 24 VAC Triac Output Switch Low External Source Note Applies to CO4 and CO5 CO Incremental Control to Actuator Switch Low External Source 9 VMA1826 1832 VAV Controller Installation Instructions ...

Page 10: ...tal Control to Actuator Switch Low Internally Sourced Note Only applies to BO1 BO2 and BO3 BO 24 VAC Binary Output Switch Low Internally Sourced Note The bottom jack J2 on the TE 700 and TE 6x00 Series Sensors are not usable as a zone bus or an SAB connection SA Bus Temperature Sensor with Modular Jack 10 VMA1826 1832 VAV Controller Installation Instructions ...

Page 11: ...ails Termination Diagrams Type of Input Output Type of Field Device SA Bus Network Stat with Terminals Addressable SA Bus Network Stat with Terminals Fixed Address 199 11 VMA1826 1832 VAV Controller Installation Instructions ...

Page 12: ...The VMA18 controller has three binary outputs BOs and supplies 24 VAC to these BOs The VMA18 controller has two configurable outputs COs and these two COs require an external low voltage power source Refer to Variable Air Volume Modular Assembly VMA 1400 Series LIT 635058 for the Input Output I O point differences between the VMA1410 and VMA1420 See Figure 9 for wiring instructions 12 VMA1826 1832...

Page 13: ...Figure 9 VMA Replacement Wiring Diagram 13 VMA1826 1832 VAV Controller Installation Instructions ...

Page 14: ...WRZ Series Wireless Sensor and a WRZ7860 Series One to One Receiver TE 7710 0 Series Wireless Transmitter and TE 7720 0 Wireless Receiver see Replacing a TE 7710 0 Series Wireless Transmitter and TE 7720 0 Wireless Receiver Connected to a VMA Controller Replacing a TE 700 Series Sensor Replace a sensor with a TE 730 Series Sensor TE 700 Series see TE 700 Series Sensor Connected to a VMA Controller...

Page 15: ...he wall and disconnect the 8 pin male jack from the back of the sensor 2 Plug the 8 pin male jack that was plugged into the back of the sensor into the 8 pin female socket on the single socket adapter Figure 10 provided with the VMA18 controller 3 Plug the 6 pin male jack on the single socket adapter into the modular jack connection on the NS Series Network Sensor 4 Mount the NS Series Network Sen...

Page 16: ...Z1600 0 sensor connected to a VMA controller complete the following instructions Note The AP TMZ1600 0 sensor is not supported for use with the VMA18 controller and must be replaced with an NS Series Network Sensor Refer to the NS Series Network Sensors Product Bulletin LIT 12011574 for a complete list of available NS Series Network Sensors 1 Remove the AP TMZ1600 0 sensor and disconnect the 8 pin...

Page 17: ...and the WRZ 7860 0 Installation Instructions Part No 24 10563 47 7 Plug the 6 pin male jack on the adapter into the WRZ7860 0 receiver Note When using an WRZ Series Sensor with screw terminal block terminations refer to the wiring diagram in the installation instructions for the applicable WRZ Series Sensor model TE 700 Series Sensor Connected to a VMA Controller To replace a TE 700 Series Sensor ...

Page 18: ...99B Silicon Temperature Sensor Negative Temperature Coefficient NTC Sensor 10K Type L 10K JCI Type II is equivalent to Type L or 2 252K Type II See Guideline A in Table 5 Binary Input Dry Contact Maintained Mode 1 second minimum pulse width Internal 12 V 15k ohm pull up Same as Universal INn Universal Input Common for all Universal INn terminals Note All Universal ICOMn terminals are isolated from...

Page 19: ...able Length Guidelines for Recommended Wire Sizes Assumptions Maximum Cable Length and Type Wire Size Gauge and Type Guideline 100 mV maximum voltage drop Depending on the cable length and the connected input or output device you may have to define an offset in the setup software for the input or output point 457 m 1 500 ft twisted wire 1 0 mm 18 AWG stranded copper A 297 m 975 ft twisted wire 0 8...

Page 20: ... COM Isolated terminal optional shield drain connection SHLD 0 6 mm 22 AWG stranded 4 wire 2 twisted pairs shielded cable recommended Note The and wires are one twisted pair and the COM and SA PWR are the second twisted pair SA Bus Communications SA BUS SA Bus Signal Reference and 15 VDC Common COM 15 VDC Supply Power for Devices on the SA Bus SA PWR 24 AWG 3 pair CAT 3 Cable 30 5 m 100 ft RJ 45 8...

Page 21: ...id MS TP addresses for wired controllers are 4 through 127 For wireless controllers valid addresses are 132 through 255 132 132 128 4 through 255 255 128 127 For wireless controllers the address 120 through 127 are used by the ZigBee Coordinator This may cause a smaller field device range If the VMA18 Series controller may eventually be converted to MS TP use addresses 4 through 127 for a wired VM...

Page 22: ...n the face of the controller is illuminated Commissioning Use the following procedure to commission the VMA18 controller 1 Download the control application to the VMA controller using the Controller Configuration Tool CCT Refer to the Controller Tool Help LIT 12011147 for details 2 Commission the VAV Box Refer to the Controller Tool Help LIT 12011147 for details 3 Perform airflow balancing on the ...

Page 23: ...shared between multiple pieces of equipment 3 Verify the short circuit has been resolved with an ohm meter 4 Reset the breaker fuse or replace the transformer Note When replacing the transformer it is recommended to replace with a model that utilizes a resettable circuit breaker A circuit breaker makes solving wiring problems easier Ensure polarities of 24 V COM OCOM match and that the connected e...

Page 24: ...model descriptions NS Series Network Sensors Transformer 120 208 240 VAC Primary to 24 VAC Secondary 92 VA Foot Mount 30 in Primary Leads and 30 in Secondary Leads Class 2 Y64T15 0 Transformer 120 VAC Primary to 24 VAC Secondary 40 VA Foot Mount Y65AS 8 in Primary Leads and 30 in Secondary Leads Class 2 Y65A13 0 Transformer 120 208 240 VAC Primary to 24 VAC Secondary 40 VA Hub Mount Y65SP 8 in Pri...

Page 25: ...dular Port RJ 45 8 Pin Modular Jack Terminations N2 Open Protocol Valid field controller device addresses 1 254 BACnet MS TP DIP switch set valid field controller device addresses 4 127 Device addresses 0 3 and 128 255 are reserved and not valid field controller addresses Controller Addressing RS 485 selectable between BACnet MS TP or N2 FC Bus 1 5 mm 18 AWG standard 3 wire twisted shielded cable ...

Page 26: ...cy non linearity and temperature variation The performance specifications are nominal and conform to acceptable industry standard 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 APAC Single Point of Contact NA SA Single Point of Contact Eu...

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