Schneider Electric MNB-300 Specifications
TAC I/A Series
MNB-300 BACnet Unitary Controller
I/A Series Micronet MNB-300
The TAC I/A Series™ MicroNet™ MNB-300
BACnet™ Unitary Controller is an interoperable
controller with native BACnet MS/TP communications
support. The controller features Sensor Link (S-Link)
support, LED status and output indication, screw
terminal blocks, as well as a panel mount sub-base
with removable electronics module.
When programmed using WorkPlace Tech Tool, the
Unitary controller provides a wide range of control
strategies for packaged rooftop, heat pump, fan coil,
unit ventilator, and similar applications.
Stand Alone or Connected
The TAC I/A Series BACnet Unitary Controller can
SPECIFICATIONS
HARDWARE
function either in a standalone mode or as part of a
BACnet building automation system (BAS) network.
1
Dimensions
7.0 in. W x 3.94 in. H x 2.19 in. D
(178 mm x 100 mm x 56 mm)
Enclosure
Optional wall-mount enclosure conforms to NEMA-1
requirements.
Cover meets UL94V-0 flammability ratings.
Mounting
Panel mount.
Wiring Terminals
I/O Points
Fixed screw terminals; up to two AWG #14
(2.08 mm
Power and MS/TP
Removable screw terminals; single AWG #14
(2.08 mm
or smaller wires.
ELECTRICAL
Power Supply Input
20.4 to 30 Vac, 50/60 Hz.
Maximum Power Consumption
16 VA at 24 Vac.
ENVIRONMENT
Operating Temperature
-40 to 140 °F (-40 to 60 °C)
Shipping and Storage Temperature
-40 to 160 °F (-40 to 71 °C)
Humidity
5 to 95% RH, non-condensing
2
) or smaller wire.
2
) wire or up to two AWG #18 (0.823 mm2)
AGENCY LISTINGS
US
FCC Part 15, Class A
UL 916, File #E71385 Category PAZX
UL 864, Category UUKL, File #S5381 Smoke-Control
Equipment
Canadian
UL Listed to Canadian Safety Standards
(CAN/CSA 22.2)
CUL Listed to Standards ULC/ORD-C100-92 (Smoke
Control System Equipment) and CAN-ULC-S527
(Control Units for Fire Alarm Systems)
Australian
Meets requirements to bear the C-Tick Mark
European Community
EMC Directive 89/336/EEC, EN61326
INPUTS AND OUTPUTS
Universal Inputs (6)
Universal Input characteristics are softwareconfigured to respond to one of the following input
types:
10k ohm Thermistor w/ 11k ohm Shunt Resistor
Sensor operating range -40 to 250 °F (-40 to 121 °C)
range. TSMN-57011-850, TS-5700-850 Series or
equivalent.
Specifications continued on next page.
TAC I/A Series
MNB-300 BACnet Unitary Controller
2
Specifications continued from first page.
1k ohm Balco Input
-40 to 250 °F (-40 to 121 °C) range. TSMN-81011,
TS-8000 Series or equivalent.
1k ohm Platinum Input
-40 to 240 °F (-40 to 116 °C) range. TSMN-58011,
TS-5800 Series or equivalent.
1k ohm Resistive
0 to 1.5k ohms.
10k ohm Resistive
0 to 10.5k ohms.
Analog Voltage
0 to 5 Vdc.
Analog Current
Range 0 to 20 mA, requires an external 250 ohm
shunt resistor (AD-8969-202).
Digital Input
Dry switched contact. Detection of closed switch
requires less than 300 ohms. Detection of open
switch requires more than 2.5k ohms.
Standard Pulse Input (UI1-UI6)
Minimum Rate
1 pulse per 4 minutes.
Maximum Rate
1 pulse per second.
Fast Pulse Input (UI1)
Minimum Rate
1 pulse per 4 minutes.
Maximum Rate
10 pulses per second.
Digital Outputs - Triac (6)
12 VA at 24 Vac, 50/60 Hz, each output individually
isolated.
Universal Outputs (3)
Current
0 to 20 mA (output load from 80 to 550 ohms).
Voltage
0 to 10 V (with external 500 ohms, 1/2 W, 1%
resistor).
Capability to Drive Functional Devices
RIBUI1C Relay (UO configured for 0 to 20 mAdc, no
external resistor).
BACnet is a registered trademark of ASHRAE.
ASHRAE does not endorse, approve, or test
products for compliance with ASHRAE standards.
Compliance of listed products to the requirements of
ASHRAE Standard 135 is the responsibility of BACnet
International (BI). BTL is a regstered trademark of BI.
Schneider Electric
F-27339-4
COMMUNICATIONS
BACnet Networks
The TAC I/A Series MicroNet BACnet Unitary
Controller incorporates an isolated EIA-485
(formerly RS-485) transceiver for BACnet MS/TP
communications at 9.6 up to 76.8 kbaud using
standard MS/TP wiring methods. Up to 128 TAC
I/A Series MicroNet BACnet controllers can be
connected to an MS/TP sub-net without repeaters.
S-Link
The Sensor Link (S-Link) communications wiring
provides power and a communication interface for
one MN-Sx MicroNet sensor. The various MN-Sx
sensors can provide room temperature, room
humidity, setpoint adjustment, and occupancy
override. This connection uses two-wire, unshielded
cable and is not polarity sensitive. Maximum S-Link
bus length is 200 ft (61 m).
BACnet COMPLIANCE
BACnet Application Specific Controller (B-ASC).
FEATURES
The TAC I/A Series MicroNet BACnet Unitary•
Controller’s sequence of operation and BACnet
image are fully programmable, using WorkPlace
Tech Tool. The controllers can be applied to all
common unitary HVAC applications.
Capability to function in standalone mode or•
as part of a TAC I/A Series building automation
network.
Integral MS/TP jack for direct connection of PC•
with WorkPlace Tech Tool.
Removable electronics module mates with panel-•
mounted subbase.
Removable terminals for power and•
communications to facilitate commissioning.
Optional rugged, NEMA 1 plenum-rated sheet•
metal enclosure.
MS/TP DIP switch addressable.•
Service pin button for BACnet “I am” message•
broadcast.
Isolated EIA-485 (formerly RS-485) transceiver for•
MS/TP communications.
MS/TP baud rate selection from 9.6 up to•
76.8 kbaud.
LED indication of MS/TP communication activity,•
controller status, and UO and DO state.
Firmware upgradeable over the network.•
Support for S-Link Sensor.•
© 2009 Schneider Electric. All rights reserved.
Novemb er 2009 pm
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