Schneider Electric MNB-1000 Installation Instructions

MNB-1000

2-5/16

(58)

Dimensions shown
are in inches (mm).

10-15/16

(278)

8-1/2
(216)

8-3/8 (213)

4 (102)

Figure-1 MNB-1000 Mounting Dimensions.

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

MNB-1000 12 4 8 8

UI DI UO DO (Triacs)

Inputs and Outputs

Installation

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.

Inspection

Inspect carton for damage. If damaged, notify carrier
immediately. Inspect controllers for damage upon receipt.

Requirements

• 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

08-13 © 2013 Schneider Electric. All rights reserved. F-27347-4

Mounting Mount the controller to the wall according to Figure-2.

7 Tighten the four thumb screws

CW to secure the input and
output boards in place.

5 Position the controller onto

the base plate.

2 To mount the MNB-1000 to a panel, proceed as

follows:

a. Holding the controller's base plate in position,

mark the locations of the four mounting holes
on the panel.

b. Set the base plate aside and drill the marked

mounting holes, using a drill bit sized to the
mounting screws.

c. Secure the base plate to the panel, using four

#10 screws (not supplied).

d.

Continue at Step 4.

3 Optional To mount the MNB-1000 inside Enclosure MNB-1000-ENC,

proceed as follows:

a.

Separate the enclosure cover from the enclosure base.

b. Holding the enclosure's base in position on the wall, mark the

locations of the four mounting holes.

c. Set the enclosure base aside and drill the marked mounting holes,

using a drill bit sized to the mounting screws.

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.

Mounting Hole

(1 of 4)

#10 Pan Head
Screw (1 of 4)

(not supplied)

Output

Board

Controller

Input

Board

Thumb Screws

(1 of 4)

Base of Optional

Enclosure

MNB-1000-ENC

Threaded Studs for
Mounting Controller

(1 of 4)

(part of enclosure base)

Mounting

Hole

(1 of 4)

#10 Pan Head
Screw (1 of 4)

(not supplied)

Aluminum

Tab (1 of 2)

Connectors

Controller

Base Plate

Locator Pin

(1 of 4)

Slot

(1 of 4)

1 Select 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.

4 Be 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.

6 Press on the aluminum tabs to slide the input and output boards

into the controller, making sure the mating connectors engage fully.

Note: The connectors are properly

engaged when the gap between
the controller and the input and
output boards is even and minimal
from top to bottom.

Warning: Electrical shock hazard! Disconnect power before installing or removing the
cover.

2 © 2013 Schneider Electric. All rights reserved. F-27347-4

Figure-2 MNB-1000 Mounting.