KMC Controls BAC-7302 Betriebsanleitung

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

Installation and Operation Guide

BAC-7302 and BAC-7302C

Advanced Applications Controller

905-019-53ERevision E

KMC Controls

Revision E2

Important notices

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.

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: 1.574.831.5250

FAX: 1.574.831.5252

E-mail: [email protected]

BAC-7302 RTU Controller

Revision E 3

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

objects. Accumulators limited to three in one

controller.

Standard units of measure.

NetSensor compatible

Overvoltage input protection

Pull–up resistors Switch select none or 10k.

Connector Removable screw terminal block, wire size

14–22 AWG

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

Programmable as an analog or binary object.

Standard units of measure

Connector Removable screw terminal block

Wire size 14-22 AWG

Output voltage 0–10 volts DC analog

0–12 volts DC binary output range

Output current 100 mA per output

KMC Controls

Revision E

About the BAC-7302

Specifications

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

Memory Programs and program parameters are stored in

nonvolatile memory.

Auto restart on power failure

BAC-7302 RTU Controller

Revision E

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, 25 VA, 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

KMC Controls

Revision E

About the BAC-7302

Accessories

Dimensions

Accessories Power transformer

XEE-6111-40 Single-hub 120 volt transformer

XEE-6112-40 Dual-hub 120 volt transformer

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

OUT4 GND T3B RTN3 T3A T2B RTN2 T2A RTN1 T1

BAC-7302 RTU Controller

Revision E

About the BAC-7302

Safety considerations

Safety

considerations KMC Controls assumes the responsibility for providing you a safe product and

safety guidelines during its use. Safety means protection to all individuals who

install, operate, and service the equipment as well as protection of the equipment

itself. To promote safety, we use hazard alert labeling in this manual. Follow the

associated guidelines to avoid hazards.

Danger

Danger represents the most severe hazard alert. Bodily harm or death will

occur if danger guidelines are not followed.

Warning

Warning represents hazards that could result in severe injury or death.

Caution

Caution indicates potential personal injury or equipment or property damage

if instructions are not followed.

Note

Notes provide additional information that is important.

Detail

Provides programing tips and shortcuts that may save time.

KMC Controls

Revision E

About the BAC-7302

Safety considerations

BAC-7302 RTU Controller

Revision E 9

SECTION 2

Installing the controller

This section provides a brief overview of the BAC-7302 and the

BAC-7302C Direct Digital Controllers. Review this material before

you attempt to install the controller.

Mounting Mount the controller inside of a metal enclosure. KMC Controls recommends using

a UL-approved Enclosed Energy Management Equipment Panel such as a KMC

model HCO–1034, HCO–1035 or HCO–1036. Insert #6 hardware through the four

mounting holes on the top and bottom of the controller to securely fasten it to a flat

surface. See Dimensions on page 6 for mounting hole locations and dimensions. To

maintain RF emission specifications, use either shielded connecting cables or enclose

all cables in conduit.

Connecting inputs The BAC-7302 controller has four universal inputs. Each input can be configured to

receive either analog or digital signals. By using the optional pull-up resistors, either

passive or active devices may be connected to the inputs.

Note

KMC supplied Control Basic programs assign input 1 (I1) to the space

temperature sensor input. If the KMC programs are not in used or are

modified, input 1 is available for other use. Inputs 2 and 3 are not assigned by

KMC programs and are available as needed.

Pull–up resistors

For passive input signals, such as thermistors or switch contacts, use a pull-up

resistor. For KMC thermistors and most other applications set the switch to the On

position. See Illustration 2-1 for the pull-up switch location.

Illustration 2-1 Pull-up resistors and input terminals

OUT4 GND T3B RTN3 T3A T2B RTN2 T2A RTN1 T1

BAC-7302 cover removed.

Off On

KMC Controls

Revision E

Installing the controller

Connecting outputs

4–20 mA inputs

To use a 4–20 current loop input, connect a 250 ohm resistor from an input to

ground. The resistor will convert the current input to a voltage which can be read by

the controller analog-to-digital converter. Set the pull-up switch to the Off position.

Ground terminals

Input ground terminals are located next to the input terminals. Up to two wires, size

14–22 AWG, can be clamped into each ground terminal. If more than two wires must

be joined at a common point, use an external terminal strip to accommodate the

additional wires.

Pulse inputs

Connect pulse inputs under the following conditions:

◆If the pulse input is a passive input such as switch contacts, then place the

input pull-up in the On position.

◆If the pulse is an active voltage (up to a maximum of +5 volts DC ), then place

the input pull-up jumper in the Off position.

Connecting

outputs The BAC-7302 includes one single-stage triac, two-three stage triacs and one

universal output. All triacs are rated for 24 volt, 1 ampere loads, switch on zero

crossing and are optically isolated.

Caution

When connecting loads to triacs, use only the terminal marked RTN associated

with each triac for the 24-volt ciruit.

Output 1 This output a single triac is designed to switch a 24-volt AC fan motor

starter circuit.

Output 2 Typically programmed with a PID loop object to control two-stage

heating. Triac 2A turns on when the programmed output is above 40% and turns off

below 30%. Triac 2B turns on when the programmed output is above 80% and turns

off below 70%.

Illustration 2-2 Output terminals

OUT4 GND T3B RTN3 T3A T2B RTN2 T2A RTN1 T1

Universal

output and

ground

Triac 2a and 2b

output and

return

Triac 3a and 3b

output and

return

Triac 1

output and

return

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