Johnson Controls VMA1200 Series Скачать руководство пользователя страница 11

Mounting and Wiring VMA1200 Series Controllers Technical Bulletin

11

Mounting the VMA

 

To mount the VMA:
1.

 

Place the VMA in the desired mounting position on the damper
shaft so the wiring terminals are easily accessible.

To allow space for VMA movement during damper rotation,
locate the shoulder washer at the center of the slot.
Make sure the VMA is parallel and mounted flat with the VAV
box. If needed, use a spacer to offset tipping of the VMA created
by shaft bushings that protrude beyond the box surface.

2.

 

Secure the self-drilling No. 10 screw provided into the VMA
mounting slot, using a power screwdriver and socket with 4 in.
extension.

Alternate mounting:
1.

 

Perform Step 1 as shown previously.

2.

 

Use a punch to mark the position of the shoulder washer, then
drill a hole into the VAV box through the mark using a 3.5 mm
(9/64 in.) bit.

3.

 

Position the VMA so the shoulder washer is over the hole; insert
the mounting screw and tighten against the washer.

Note:

 

The mounting screw is threaded into sheet metal and the

threads can strip. Do not overtighten. Make sure the screw does not
interfere with full damper rotation.

 

Shoulder

Washer

Mounting

Screw

Mounting Slot

Mount

Bar Code

(Neuron ID)

Phone Jack
(for Sensor)

Service Pin

(Broadcasts 

Neuron ID)

Figure 4: Mounting Screw with Shoulder Washer

Содержание VMA1200 Series

Страница 1: ...Wiring VMA1200 Series Controllers 2 Introduction 2 Key Concepts 3 VMA Position and Orientation 3 Determine and Set Damper Polarity 3 Wiring and Cabling Precautions 4 VMA Internal Schematic Diagram 6...

Страница 2: ...mbly VMA which is a controller actuator pressure sensor mounts on the Variable Air Volume VAV terminal box and fastens to the damper shaft Instructions for wiring the VMA and its accessory devices are...

Страница 3: ...VMA so that it has adequate clearance for future servicing and is protected from moisture and corrosive fumes Determine and Set Damper Polarity Damper polarity is established upon installation Incorr...

Страница 4: ...d destroys the VMA triac Read these precautions before touching the terminals or wiring the VMA and its accessories Make all wiring connections in accordance with the National Electrical Code NEC and...

Страница 5: ...put Output wiring where convenient The following are additional general wiring considerations The VMA includes an isolated LONWORKS Network Bus isolated binary outputs and isolated 24 VAC See VMA Inte...

Страница 6: ...ed Power Supply 2 Earth Ground Connection 3 Airflow and High Temperature Safety Switches 4 Isolated Triacs and Power Wiring for the Airflow and High Temperature Safety Switches 5 Isolated LONWORKS Net...

Страница 7: ...han 150 VAC 1 2 XFR Synchronous Motor Actuator COM Water Valve 1 2 4 3 In LONWORKS Network Bus VMA 15V 5V Triacs COM COM AO 15 23 14 OPTO 24 VAC BCOM CablePRO or CVTPRO Laptop R R Reheat BO 3 Reheat B...

Страница 8: ...own cable refer to Fabricating Your Own Interconnection Cable in Appendix A Reference Information located in the Variable Air Volume Modular Assembly VMA 1200 Series Overview and Engineering Guidelin...

Страница 9: ...VDC 6 Power Common and Zone Bus Common and Manual Override Common and LED Common 7 Zone Bus 8 LED and Manual Override Manual Override for Temporary Occupied Mode is selected using DIP switches for ei...

Страница 10: ...ional Note The VMA requires a damper shaft protrusion of at least 44 mm 1 3 4 in from the VMA mounting surface 3 Ensure the VMA installation site meets the following environmental requirements The VMA...

Страница 11: ...crew provided into the VMA mounting slot using a power screwdriver and socket with 4 in extension Alternate mounting 1 Perform Step 1 as shown previously 2 Use a punch to mark the position of the shou...

Страница 12: ...elease lever down and position the actuator collar against its internal stop corresponding to the fully closed position This provides a hard stop for this position The hard stop for the open position...

Страница 13: ...A coupler by hand to ensure that the damper can rotate from full closed to full open positions without binding 6 Plug or seal the end of a hollow damper shaft to stop cold duct air from affecting the...

Страница 14: ...2 or 3 position screw terminals or phone cable is to be used See the Variable Air Volume Modular Assembly VMA 1200 Series Overview and Engineering Guidelines Technical Bulletin LIT 1162350 for screw...

Страница 15: ...they are internal and no wiring is required Connecting the LONWORKS Network Bus A connection between the VMA and the Network Control Module NCM is required if the VMA is to communicate with the Metas...

Страница 16: ...Shield LON A LON B LON A LON B NCMConnect To Next L W Compatible Device or NCM ON ORKS Figure 9 Connecting the VMA to an NCM 2 Apply power Locate and observe the VMA LEDs See Tables 7 and 8 for detail...

Страница 17: ...ED SHLD Description LED Color Included on VMA1220 Only Safety Isolation Transformer in Europe Earth Ground COM CW End Stop 3 Controller operating properly The network table is not configured Use Comm...

Страница 18: ...en received Table 8 Running LED Color Name State Description Blinking Application is running normally LED blinks at one second interval On Steady Application is not running Try the following 1 Check t...

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