Kmc controls BAC-7302, BAC-7302C Operation Guide

Installation and Operation Guide

BAC-7302 and BAC-7302C

Advanced Applications Controller

Section 1

About the BAC-7302

Specifications ........................................................................................................................ 3

Accessories ............................................................................................................................ 6

Safety considerations ..........................................................................................................7

Section 2

Installing the controller

Mounting .............................................................................................................................. 9

Connecting inputs ............................................................................................................... 9

Connecting outputs ........................................................................................................... 10

Connecting to a NetSensor ............................................................................................... 11

Connecting to an MS/TP network .................................................................................. 11

Connecting power ............................................................................................................. 13

Programming ..................................................................................................................... 14

Section 3

Operating the controller

Operation ............................................................................................................................ 15

Controls and Indicators .................................................................................................... 15

Restoring factory settings ................................................................................................. 18

905-019-53FRevision F

KMC Controls

Important notices

©2013, KMC Controls, Inc.

WinControl XL Plus, NetSensor, and the KMC logo are registered trademarks of KMC Controls, Inc.

BACstage and TotalControl are trademarks of KMC Controls, Inc.

MS/TP automatic MAC addressing is protected under United States Patent Number 7,987,257.

All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a
retrieval system, or translated into any language in any form by any means without the written permission of
KMC Controls, Inc.

Printed in U.S.A.

Disclaimer

The material in this manual is for information purposes only. The contents and the product it describes are
subject to change without notice. KMC Controls, Inc. makes no representations or warranties with respect to
this manual. In no event shall KMC Controls, Inc. be liable for any damages, direct or incidental, arising out of
or related to the use of this manual.

KMC Controls

P. O . B o x 4 9 7
19476 Industrial Drive
New Paris, IN 46553
U.S.A.
TEL: [phone]
FAX: [phone]
E-mail: [e-mail]

Revision F2

BAC-7302 RTU Controller

SECTION 1

About the BAC-7302

This section provides a general description of the KMC Controls
BAC-7302 controller. It also introduces safety information. Review
this material before installing or operating the controller.

The BAC-7302 is a native BACnet, fully programmable controller designed for roof
top units. Use this versatile controller in stand-alone environments or networked to
other BACnet devices. As part of a complete facilities management system, the
BAC-7302 controller provides precise monitoring and control of connected points.

◆ BACnet MS/TP compliant

◆ Automatically assigns the MAC address and the device instance

◆ Triac outputs for fan control, two-stage heating and two-stage cooling

◆ Supplied with programming sequences for roof top units

◆ Easy to install, simple to configure, and intuitive to program

◆ Controls room temperature, humidity, fans, monitors refrigeration, lighting,

and other building automation functions.

Specifications Inputs

Universal inputs 4
Key features Software selectable as analog, binary or accumulator

Pull–up resistors Switch select none or 10k.
Connector Removable screw terminal block, wire size

Conversion 10–bit analog–to–digital conversion
Pulse Counting Up to 16 Hz
Input range 0–5 volts DC
NetSensor Compatible with models KMD–1161 and KMD–1181.

Outputs, Universal 1

Key features Output short protection

Connector Removable screw terminal block

Output voltage 0–10 volts DC analog

Output current 100 mA per output

objects. Accumulators limited to three in one
controller.
Standard units of measure.
NetSensor compatible
Overvoltage input protection

AWG

14–22

Programmable as an analog or binary object.
Standard units of measure

Wire size 14-22 AWG

0–12 volts DC binary output range

Revision F 3

About the BAC-7302

Specifications

KMC Controls

Outputs, Single-stage triac 1

Key features Optically isolated triac output.

Programmable a binary object.

Connector Removable screw terminal block

Wire size 14-22 AWG

Output range Maximum switching 30 volts AC at 1 ampere

Outputs, Dual-stage triac 2

Key features Optically isolated triac output.

Programmable as binary object.

Connector Removable screw terminal block

Wire size 14-22 AWG

Output range Maximum switching 30 volts AC at 1 ampere

Communications

BACnet MS/TP EIA–485 operating at rates up to 76.8 kilobaud.

Automatic baud detection.
Automatically assigns MAC addresses and device
instance numbers.
Removable screw terminal block.
Wire size 14–22 AWG

NetSensor Compatible with models KMD–1161 and KMD–1181,

Connects through RJ–12 connector.

Programmable features

Control Basic 10 program areas
PID loop objects 4 loop objects
Value objects 40 analog and 40 binary
Time keeping Real time clock with power backup for 72 hours

(BAC-7302-C only)
See PIC statement for supported BACnet objects

Schedules

Schedule objects 8
Calendar objects 3

Trend objects 8 objects each of which holds 256 samples

Alarms and events

Intrinsic reporting Supported for input, output, value, accumulator,

trend and loop objects.

Notification class objects 8

MemoryPrograms and program parameters are

stored in nonvolatile memory.
Auto restart on power failure

4

Revision F

BAC-7302 RTU Controller

About the BAC-7302

Specifications

Application programs KMC Controls supplies the BAC-7302 with

programming sequences for roof top units:

◆ Roof top operation based on occupancy, night

setback, proportional hot and chilled water valve
control.

◆ Economizer operation.

◆ Freeze protection.

Regulatory UL 916 Energy Management Equipment

FCC Class B, Part 15, Subpart B
BACnet Testing Laboratory listed
CE compliant
SASO PCP Registration KSA R-103263

Environmental limits

Operating 32 to 120° F (0 to 49° C)
Shipping –40 to 140° F (–40 to 60° C)
Humidity 0–95% relative humidity (non-condensing)

Installation

Supply voltage 24 voltsAC(–15%,+20%),50‐60Hz,8VA

minimum,15VAmaximumload,Class2only,
non‐supervised(allcircuits,includingsupply
voltage,arepowerlimitedcircuits)

Weight 8.2 ounces (112 grams)
Case material Flame retardant green and black plastic

Models

BAC-7302C BACnet RTU controller with real-time clock
BAC-7302 BACnet RTU controller without real-time clock

Revision F

5

About the BAC-7302

OUT4 GND T3B RTN3 T3A T2B RTN2 T2A RTN1 T1

A

E

B

C

D

Accessories

KMC Controls

Dimensions

Table 1-1 BAC-7302 Dimensions

A B C D E

4.36 in. 6.79 in. 1.42 in. 4.00 in. 6.00 in.

111 mm 172 mm 36 mm 102 mm 152 mm

Accessories Power transformer

XEE-6111-40 Single-hub 120 volt transformer
XEE-6112-40 Dual-hub 120 volt transformer

6

Revision F