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Johnson Controls MS-VMA1615-0U, Installation Instructions Manual, Page: 11 / 21

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Johnson Controls MS-VMA1615-0U Installation Instructions Manual Download Page 11

Table 2: Termination Details

Termination Diagrams

Type of
Input/Output

Type of Field
Device

SA Bus

Network Stat with
Phone Jack (Fixed
Address = 199)

SA Bus

Network Stat with
Terminals
Addressable

SA Bus

Network Stat with
Terminals (Fixed
Address = 199)

11

VMA1615 and VMA1630 Variable Air Volume Controllers Installation Instructions

Summary of Contents for MS-VMA1615-0U

Page 1: ...amily Controllers and network sensors communicate using either the standard BACnet protocol based on the ANSI ASHRAE 135 2004 or the BACnet IP protocol The BACnet protocol is a standard for ANSI ASHRAE and the International Standards Organization ISO for building controls FEC VMA and most IOM field controllers are BTL listed as BACnet Application Specific Controllers B ASCs FAC field controllers a...

Page 2: ...to tighten the square coupler bolt several shims or washers to mount the VMA power screwdriver 100 mm 4 in extension socket punch drill and 3 5 mm 9 64 in drill bits to mount the VMA pliers to open and close the damper required length of 3 97 mm 5 32 in ID pneumatic tubing and barbed fittings Mounting Observe these guidelines when mounting a VMA Important When the air supply to the VAV box is belo...

Page 3: ...oses CW rotate the coupler to the CW mechanical limit The open end stop is automatically set for 90 boxes For 45 and 60 boxes hard stops must be provided at both full closed and full open damper positions By installing the VMA controller at the full open position the VMA controller provides the open stop for 45 and 60 boxes The closed damper seal provides the full closed stop 8 All models are comp...

Page 4: ...Figure 2 VMA1615 1630 Controller Wiring Terminations and Physical Features VMA1630 Shown 4 VMA1615 and VMA1630 Variable Air Volume Controllers Installation Instructions ...

Page 5: ...iversal Input Voltage Analog Input 0 10 VDC Resistive Analog Inputs 0 600k ohm see Table 3 0 2k Potentiometer RTD 1k Nickel 1k Platinum or A99B SI NTC 10K Type L 10K Johnson Controls Type II is equivalent to Type L or 2 252K Type II Dry Contact Binary Input 9 FC Bus Terminal Block May also be used for N2 connections See FC Bus Terminal Block Or N2 Protocol As Required 10 EOL End of Line Switch see...

Page 6: ...input and output terminal and bus port locations on the VMA1615 1630 controllers Observe the following guidelines when wiring a VMA controller Input and Output Terminals The input spade terminals are located on the side of the VMA near the FC Bus terminal block The output spade terminals are located on the opposite side of the controller near the power supply terminal block See Table 3 for more in...

Page 7: ... grounding the secondary of the 24 VAC transformer is required only one connection to ground should be made near the transformer See the following figure Figure 7 Transformer Grounding 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...

Page 8: ...ables 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 Maximum Cable Length versus Load Current Use Figure 8 to estimate the maximum cable length...

Page 9: ...licable termination diagrams Table 2 Termination Details Termination Diagrams Type of Input Output Type of Field Device UI Voltage Input External Source UI Voltage Input Internal Source UI Voltage Input Self Powered UI Temperature Sensor UI Dry Contact CO 0 10 VDC Output to Actuator External Source 9 VMA1615 and VMA1630 Variable Air Volume Controllers Installation Instructions ...

Page 10: ...Switch Low External Source Note Applies to CO4 and CO5 CO Incremental Control to Actuator Switch Low External Source CO Analog Output Voltage Note Applies to BO3 for VMA 1630 only BO1 and BO2 BO Incremental Control to Actuator Switch Low Internally Sourced BO 24 VAC Binary Output Switch Low Internally Sourced 10 VMA1615 and VMA1630 Variable Air Volume Controllers Installation Instructions ...

Page 11: ... Output Type of Field Device SA Bus Network Stat with Phone Jack Fixed Address 199 SA Bus Network Stat with Terminals Addressable SA Bus Network Stat with Terminals Fixed Address 199 11 VMA1615 and VMA1630 Variable Air Volume Controllers Installation Instructions ...

Page 12: ...ature 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 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 IN terminals Note All Universal ICOMn terminals are isolated from all o...

Page 13: ...lines 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 mm 20 AWG strand...

Page 14: ... wire 2 twisted pairs shielded cable recommended Note The and wires are one twisted pair and the COM and SA PWR wires are the second twisted pair SA Bus Communications SA BUS 2 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 5m 100 ft RJ 12 6 Position Modular Port provides FC Bus Communications FC BUS FC BUS 2 24 AWG 3...

Page 15: ... 64 through 1 are device address switches Switch 128 is a mode switch that enables a field controller to operate on a ZFR ZFR Pro Series Wireless Field Bus Set switch 128 to OFF for all hard wired SA and FC Bus applications Figure 9 Device Address Switches Set to 21 Note Metasys field controllers ship with Switch 128 ON and the remaining address switches OFF This renders the controllers wired slav...

Page 16: ...oller 3 Set the address switch set to the desired N2 address 4 Set the address switch segment labeled 128 to OFF 5 Reconnect the 24 VAC supply to the controller 6 Using an SA bus connection download the firmware and controller application file The download process asks to confirm switching the communication protocol to N2 7 Click OK 8 After the download is finished disconnect the 24 VAC supply to ...

Page 17: ... controller fails to operate within its specifications contact the Johnson Controls Repair Center in Louisville Kentucky at 1 502 671 7312 Troubleshooting Table 8 provides LED status indicator information for troubleshooting the VMA1615 1630 controller Table 7 provides some additional troubleshooting information for possible problems Note If you experience short circuits in the 24 VAC power supply...

Page 18: ...en 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 end device us...

Page 19: ...9 to order accessories Table 9 VMA1615 1630 Controller Accessories Order Separately Description Product Code Number Transformer 120 24 VAC 96 VA with circuit breaker and 120 VAC outlet approved for Smoke Control PAN PWRSP U Refer to the NS Series Network Sensors Product Bulletin LIT 12011574 for specific sensor model descriptions NS Series Network Sensors Technical Specifications Table 10 VMA1615 ...

Page 20: ...the supervisory controller and field controller SA Bus 0 6 mm 22 AWG stranded 4 wire 2 twisted pairs shielded cable recommended from the VMA controller for network sensors and other sensor actuator devices includes a terminal to source 15 VDC supply power from VMA to SA Bus devices 1 Communications Bus 1 RX630 32 bit Renesas microcontroller Processor 1 MB flash memory and 512 KB RAM Memory UI Anal...

Page 21: ...r to the MSTP Communications Bus Technical Bulletin LIT 12011034 2 Combined error due to offset non linearity and temperature variation 3 Includes error due to non linearity 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 shall not be liable fo...

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