MNB-1000
TAC I/A Series MicroNet BACnet
Plant Controller
Installation Instructions
MicroNetApplication
The TAC I/A Series™ MicroNet™ BACnet™ Plant Controller is an interoperable controller with native BACnet, IP, and MS/TP communications support. The controller features Sensor Link (S-Link) support, LED status and output indication, two Ethernet ports, and screw terminal blocks.
The Plant Controller’s sequence of operation and BACnet image are fully programmable using WorkPlace
Tech Tool, and can be applied to a wide range of mechanical equipment. Typical applications include central station air handlers, VAV air handlers, and cooling towers.
Model Chart
Model |
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Inputs and Outputs |
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UI |
DI |
UO |
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DO (Triacs) |
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MNB-1000 |
12 |
4 |
8 |
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8 |
Installation
Inspection
Inspect carton for damage. If damaged, notify carrier immediately. Inspect controllers for damage upon receipt.
Requirements
Precautions
When installing the MNB-1000 controller, be sure to follow the guidelines outlined in "Precautions" on page 4.
Location
The MNB-1000 controller is suitable for indoor use only.
Caution:
•Avoid locations where excessive moisture, corrosive fumes, vibration, or explosive vapors are present.
•Avoid electrical noise interference. Do not install near large contactors, electrical machinery, or welding equipment.
•Locate where ambient temperatures do not exceed 140 °F (60 °C) or fall below -40 °F (-40 °C) and relative humidity does not exceed 85% or fall below 5%, non-condensing.
Dimensions
Mounting dimensions for the MNB-1000 controller are shown in Figure-1. Refer to Figure-3 for mounting dimensions for optional enclosure MNB-1000-ENC.
•Installer must be a qualified technician The following items are not provided.
•Job wiring diagrams
•Tools:
–Drill and bits for mounting screws
–Screw drivers
–Nut drivers
–Digital Volt-ohm meter (DVM)
–Static protection wrist strap
•MNB-1000-ENC enclosure for wall-mounting (optional)
•Class 2 power transformer supplying a nominal 50 VA at 24 Vac plus DO load; in European Community, transformer must conform to EN 60742
•Four #10 pan head screws for wall-mounting
•Four #10 pan head screws for panel-mounting
•If needed, end-of-line termination resistor, 120 Ω ±5%, part number 40-1758
10-15/16
(278)
8-1/2
(216)
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Dimensions shown |
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4 (102) |
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are in inches (mm). |
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8-3/8 (213) |
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2-5/16
(58)
Figure-1 MNB-1000 Mounting Dimensions.
08-13 |
© 2013 Schneider Electric. All rights reserved. |
F-27347-4 |
Mounting
Mount the controller to the wall according to Figure-2.
Warning: Electrical shock hazard! Disconnect power before installing or removing the cover.
1Select a mounting location. The MNB-1000 may be panel-mounted or, optionally, enclosure-mounted. To panel-mount the MNB-1000, go to Step 2. To mount the MNB-1000 inside optional Enclosure MNB-1000-ENC, go to Step 3.
Note: The MNB-1000 may be mounted in any orientation.
4Be sure the input and output boards are spread apart as far as possible. If needed, loosen the four thumb screws by turning them CCW and then reposition the boards.
2 To mount the MNB-1000 to a panel, proceed as |
5 Position the controller onto |
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follows: |
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the base plate. |
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a. Holding the controller's base plate in position, |
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Base Plate |
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mark the locations of the four mounting holes |
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Controller |
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on the panel. |
Locator Pin |
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b. Set the base plate aside and drill the marked |
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(1 of 4) |
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mounting holes, using a drill bit sized to the |
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mounting screws. |
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c. Secure the base plate to the panel, using four |
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#10 screws (not supplied). |
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d. Continue at Step 4. |
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Mounting Hole |
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(1 of 4) |
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Slot |
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#10 Pan Head |
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(1 of 4) |
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Screw (1 of 4) |
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(not supplied) |
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6 Press on the aluminum tabs to slide the input and output boards |
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into the controller, making sure the mating connectors engage fully. |
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Note: The connectors are properly |
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engaged when the gap between |
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the controller and the input and |
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3 Optional To mount the MNB-1000 inside Enclosure MNB-1000-ENC, |
output boards is even and minimal |
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from top to bottom. |
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proceed as follows: |
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a. Separate the enclosure cover from the enclosure base. |
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Connectors |
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b. Holding the enclosure's base in position on the wall, mark the |
Aluminum |
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locations of the four mounting holes. |
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Tab (1 of 2) |
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c. Set the enclosure base aside and drill the marked mounting holes, |
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using a drill bit sized to the mounting screws. |
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d. Secure the enclosure base to the wall, using four #10 screws (not supplied).
e. Mount the controller's base plate onto the four threaded studs on the enclosure's base. Secure the base plate, using four #6-32 nuts (provided).
f. Continue at Step 4.
#10 Pan Head
Screw (1 of 4)
(not supplied)
Threaded Studs 
Mounting Controller
(1 of 4) (part of enclosure
Base of Optional
-ENC |
Input |
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Board |
Output |
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Board |
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Controller |
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Thumb Screws |
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Mounting |
(1 of 4) |
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Hole |
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(1 of 4) |
7 Tighten the four thumb screws |
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CW to secure the input and |
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output boards in place. |
Figure-2 MNB-1000 Mounting.
2 |
© 2013 Schneider Electric. All rights reserved. |
F-27347-4 |
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