User Guide for AAON models including: ASM01626, ASM02426, ASM02427, ASM02224, ASM02188, ASM01626 Mini Link PD 5, ASM01626, Mini Link PD 5, Link PD 5, PD 5


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Compatible with
VCCX-454 Series
Compatible with
VCCX/VCCX-IP Series
MiniLink PD 5 Technical Guide

LOCAL
T SH R
LOCAL LOOP WIRE TERMINALS

NETWORK
R SH
T
NETWORK LOOP WIRE
TERMINALS

OFF

www.aaon.com
MINILINK PD 5 AAON P/N: ASM01626
ADDRESS DIP SWITCH
1 2 4 8 16 32 NET LOOP ON FOR HI SPD
24 VAC POWER ONLY
WARNING! POLARITY MUST BE OBSERVED OR THE BOARD
WILL BE DAMAGED

LABEL P/N: G124890 GND +24 VAC

REVISION AND DATE Rev. C, October 2, 2020 Rev. D, June 21, 2024

PT-LINK II BACNET5 TECHNICAL GUIDE CHANGE
updated wiring, updated board, updated compatibility notes, updated format

PRODUCT NAME PARTS REFERENCE

PART DESCRIPTION

MiniLink PD 5

ASM01626

AAON Unit Controllers

Varies

Pressure Dependent VAV/Zone BACnet® Controller
®
Pressure Independent VAV/Zone BACnet Controller

ASM02426 ASM02427

Power/Comm Board

ASM02224

VAV/Zone Power/Comm Modular Adapter

ASM02188

For Previous Generation VAV/Zone Controllers w/ Power/Comm Connections

Contact Factory

PART NUMBER

www.aaon.com
This manual is available for download from www.aaon.com

AAON, Inc. 2425 South Yukon Ave. Tulsa, OK 74107-2728 Factory Technical Support Phone: 918-382-6450 Controls Support Phone: 866-918-1100 All rights reserved. © March 2022 AAON, Inc. It is the intent of AAON to provide accurate and current product information. However, in the interest of product improvement, AAON reserves the right to change pricing, specifications, and/or design of its product without notice, obligation, or liability. AAON P/N: G042660, Rev. D

AAON, Inc. assumes no responsibility for errors or omissions. This document is subject to change without notice. Windows® 10 is a registered trademark of Microsoft Corporation. BACnet® is a registered trademark of ASHRAE, Inc., Atlanta, GA.

MiniLink PD 5 Technical Guide

2

TABLE OF CONTENTS
GENERAL INFORMATION................................................................................................................................ 6 Overview and Features........................................................................................................................................... 6
OVERVIEW ......................................................................................................................................................... 7 Dimensions and Mounting ...................................................................................................................................... 7
CONFIGURATION.............................................................................................................................................. 8 Address Dipswitch Setting ...................................................................................................................................... 8 Network and Local Loop Baud Rate Settings ......................................................................................................... 9
APPENDIX A: TERMINAL WIRING................................................................................................................ 10 Terminal Wiring ..................................................................................................................................................... 10 Networked Single RS-485 Loop Wiring (VCCX2 and VCCX-IP Series Controllers) ..............................................11 Networked Multiple RS-485 Loop Wiring .............................................................................................................. 12
APPENDIX B - MODULAR WIRING............................................................................................................... 13 Power/Comm Board Wiring .................................................................................................................................. 13 Modular Wiring - Legacy MiniLink PD 5................................................................................................................ 14 Networked Multiple RS-485 Loop Modular System Wiring ................................................................................... 15
APPENDIX C - CONVERSION WIRING......................................................................................................... 16 Modular to Terminal Wiring Conversion ................................................................................................................ 16

MiniLink PD 5 Technical Guide

3

TABLE OF FIGURES
FIGURES Figure 1: MiniLink PD 5 Dimensions .........................................................................................................................7 Figure 2: Address Dipswitch Setting .........................................................................................................................8 Figure 3: Network and Local Loop Baud Rate Settings ............................................................................................9 Figure 4: Terminal Wiring (Legacy MiniLink shown)................................................................................................10 Figure 5: Network Single RS-485 Loop Wiring (VCCX2 and VCCX-IP series controllers) .....................................11 Figure 6: Network Multiple RS-485 Loop Wiring .....................................................................................................12 Figure 7: Power Comm Board Wiring .....................................................................................................................13 Figure 8: Modular Wiring - Legacy MiniLink PD 5 ...................................................................................................14 Figure 9: RS-485 Networked Multiple Loop Modular System Wiring (Legacy MiniLink Module) ............................15 Figure 10: RS-485 Networked Multiple Loop Modular System Wiring (Legacy MiniLink Module) ............................16

MiniLink PD 5 Technical Guide

4

GENERAL INFORMATION Overview and Features

Overview

Features

The MiniLink PD 5 is an RS-485 communications device that is used to integrate multiple local RS-485 communication loops into an RS-485 network communications system. See Figure 1, page 5 for dimensions.

The MiniLink PD 5 utilizes token passing communication architecture. The MiniLink PD 5 is designed to serve as the local communications loop master. This means that it is responsible for sending the token to all the controllers on the local communications loop.

NOTE: Boards produced after 2024 will no longer have modular connections. Use either the terminal wiring diagram or the modular to terminal conversion wiring diagram for connecting these newer boards.
The MiniLink PD 5 is required on the Orion Control system to separate local loops. Up to 60 MiniLink loops can be on a system.

Network communications are RS-485 type operating at 19,200 or 115,200 baud. Local communications are also RS-485 type and operate at 9600 or 57,600 baud. See Figure 2, page 6.
The MiniLink PD 5 is factory default set to low speed. The baud rate is set with dipswitches 7 & 8. See Figure 3, page 7.

Local loop terminals of the MiniLink PD 5 are designed to connect to controllers that are daisy-chained together on its RS-485 local communications loop.

Network RS-485 loop terminals on the MiniLink PD 5 are used to daisy-chain multiple MiniLinks back to a CommLink 5 to form a network communications loop. This provides for a fully networked RS-485 communications system.

The MiniLink PD 5 is required for VAV systems to allow information to be shared between the HVAC Unit Controller and the VAV/ Zone BACnet® Controllers (VAVZB). It is also required for zoning systems to facilitate voting of the zones to determine the HVAC units heating and cooling mode of operation. It also provides tenantlogging capabilities.

MiniLink PD 5 Technical Guide

5

OVERVIEW Dimensions and Mounting

Environmental Requirements

Mounting

The MiniLink PD 5 needs to be installed in an environment that can maintain a temperature range between -30°F and 150°F and a humidity range between 0% and 95% RH (non-condensing).

The MiniLink PD 5 is housed in a plastic enclosure. It is designed to be mounted by using the 3 mounting holes in the enclosure base. It is important to mount the device in a location that is free from extreme high or low temperatures, moisture, dust, and dirt. Be careful not to damage the electronic components when mounting the MiniLink PD 5. The printed circuit board plastic cover has a UL94V0 flame rating.

5.96

2.07

2.73

0.29

R44 1002

LOCAL

COMM

T

SH

R

TB1

U10

J6 LOOP DRV

5.05

1002 R27 .1uF C37

R26

U8

1002

PD DRV
1002 R25

1002 R24
R23 1002 C30 .1uF

C22

PDSTAT2

C23

PDSTAT1

C24

PD COMM

1002 R4 1002 R1 1002 R3
YS102398 REV 3 PIC32 MLPD MADE IN USA

PD

R22 J3 1002

Figure 1: MiniLink PD 5 Dimensions

4.1

J1
ML

R2 1002 R43 1002

COMM

NETWORK

R

SH

T
.1uF C40 1002 R31

TB2

SERIAL #
U12

NET DRV D4

5.6

J7

J8

1002

1002

ADDRESS
1002

SW2

1002

1

OFF

1002

2

1002

4

1002 R20

8

1002 R21

16

1002 R46

32

NET

LOOP

C33 .1uF

ON FOR HI SPD

POWER

0.66 Note: All Dimensions are in inches.

MiniLink PD 5 Technical Guide

6

CONFIGURATION Address Dipswitch Setting

Note: The power to the Minilink must be removed and reconnected after changing the address switch settings in order for any
changes to take effect.

OFF

ADDRESS
SW2
1 2 4 8 16 32
NET
LOOP
ON FOR HI SPD

Address 1 ADD

1 2 4 8 16
32 NET
LOOP

ADD

Address 13 ADD

1 2 4 8 16
32 NET
LOOP

ADD

Controller
Address Switch Address Switch Shown Is
Set For Address 1

Address Switch Shown Is Set For Address 13

The Address For Each MLPD5 Must Be Unique To The Other MLPD5s On The Network Loop And Be Between 1 and 60.

Figure 2: Address Dipswitch Setting

MiniLink PD 5 Technical Guide

7

CONFIGURATION Network and Local Loop Baud Rate Settings

Note: The MiniLink PD 5 is factory set to low speed.
Note: The power to the MiniLink must be removed and reconnected in order for a Baud Rate change to take effect.

BAUD 115,200

NETWORK LOOP
SWITCH 7
ON

SPEED HIGH*

19,200 BAUD 57,600 9600

OFF
LOCAL LOOP SWITCH 8
ON
OFF

LOW** SPEED HIGH*** LOW****

ADDRESS
SW2
1 2 4 8 16 32
NET
LOOP
ON FOR HI SPD

* The Network Loop (Switch 7) must be set to High Speed if it is connected to a loop that includes a CommLink 5 set to High Speed.
**The Network Loop (Switch 7) must be set to Low Speed if it is being used on a system that includes a CommLink 5 set to Low Speed.
*** The Local Loop (Switch 8) must be set to High Speed if it is connected to a loop that ONLY includes VCB-X or VCC-X Controllers and/or any current or future generation controllers set to high speed
****The Local Loop (Switch 8) must be set to Low Speed if it is being used on a system that includes the VCM-X Controller, older generation Orion Controllers, or any current controllers set to low speed.

OFF
OFF OFF

ADDRESS
SW2
1 2 4 8 16 32
NET
LOOP
ON FOR HI SPD

NET & LOOP Set To Low Speed

ADDRESS
SW2
1 2 4 8 16 32
NET
LOOP
ON FOR HI SPD

NET & LOOP Set To High Speed

Controller Address Switch
Address Switches Show NET & LOOP Set To OFF for Low Speed

Controller Address Switch
Address Switches Show NET & LOOP Set To ON for High Speed

Figure 3: Network and Local Loop Baud Rate Settings

MiniLink PD 5 Technical Guide

8

APPENDIX A: TERMINAL WIRING Terminal Wiring
Note: For MiniLink modules produced on or after 2024, this is the only method for wiring local or network loops.

Caution: Disconnect all communication loop wiring from the MiniLink before removing power from the controller. Reconnect power and then reconnect the communication wiring loop.
Connect local loop terminals to T, SH, and R local loop terminals on first controller on local loop. Be sure to wire T to T, SH to SH, and R to R.

T SH R

R44 1002

LOCAL

COMM

T

SH

R

TB1

U10

J6 LOOP DRV

Modular wiring is only available on MiniLink modules produced before 2024.

1002 R27 .1uF C37

R26

U8

1002

PD DRV
1002 R25

1002 R24
R23 1002 C30 .1uF

C22

PDSTAT2

C23

PDSTAT1

C24

PD COMM

1002 R4 1002 R1 1002 R3
YS102398 REV 3 PIC32 MLPD MADE IN USA

PD

Note: This network wiring is not required on single loop systems without a CommLink. When a CommLink is used on single loop systems, connect network loop wire terminals to the CommLink.
All communication wiring must be plenum-rated, minimum 18-gauge, 2-conductor, twisted pair with shield wire. Belden #82760 or equuivalent communications wire may also be used for network or local loop wiring.

J1
ML

R2 1002 R43 1002

COMM

NETWORK

R

SH

T

.1uF C40 1002 R31

TB2

R SH T

SERIAL #
U12

NET DRV D4

J7

J8

1002

1002

ADDRESS
1002

SW2

1002

1

OFF

1002

2

1002

4

1002 R20

8

1002 R21

16

1002 R46

32

NET

LOOP

C33 .1uF

ON FOR HI SPD

POWER

R22 J3 1002

GND 18-30 VAC

24 VAC Transformer Size For 6 VA Max. Load

Figure 4: Terminal Wiring (Legacy MiniLink shown)

MiniLink PD 5 Technical Guide

9

APPENDIX A: TERMINAL WIRING Networked Single RS-485 Loop Wiring (VCCX2 and VCCX-IP Series Controllers)
LT1785

Figure 5: Network Single RS-485 Loop Wiring (VCCX2 and VCCX-IP series controllers)

MiniLink PD 5 Technical Guide

Typical Single Loop Networked System With MiniLink Polling Device & VAV/Zone BACnet® (VAVZB) Controllers
Note: Either a Modular System Manager SD, Moduluar Service Tool SD, or computer with Prism 2 software installed can be used to program and configure the Orion system.

RS-485 LOOP

R GT

T SHLD R

Typical terminal blocks. All wiring to be T to T, SHLD (G) to SHLD (G) & R to R.

HVAC Unit Controller (VCCX-IP shown)

Local Local

MiniLink PD 5

LOCAL
T SH R
LOCAL LOOP WIRE TERMINALS

NETWORK
R SH
T
NETWORK LOOP WIRE TERMINALS

OFF

www.aaon.com
MINILINK PD 5 AAON P/N: ASM01626
ADDRESS DIP SWITCH
1 2 4 8 16 32 NET LOOP ON FOR HI SPD
24 VAC POWER ONLY WARNING! POLARITY MUST BE OBSERVED OR THE BOARD WILL BE DAMAGED

LABEL P/N: G124890
GND +24 VAC

Line Voltage
18-30 VAC (6 VA)

System Manager TS-L
Note: The SMTS-L is an end-user interface only. It cannot be used to configure the controllers.

BLACK (R) BARE (S) WHITE (T)
RED (18-30 VAC) BROWN (GND)

TERM For stand-alone applications both jumpers must be ON.

C13 C11 C10 C9

1002

1002 R10

R12

R22 1002
R24 1002
R27 1002
1002 R29

.1uF

.1uF

C26

C25

.1uF R20 C23
1002

X3 66.000Mhz

C14 .1uF
C1 .1uF

C20 .1uF

C19 .1uF

R36 1002

C6 C8 .1uF

.1uF C18 .1uF C16

C17

.1uF

1002

1002

.1uF

R14 1002

RTC

1002

CAL 1002

R17 R26 C45 X2
J3

8.00Mhz

R40

.1uF

.1uF

R42 C5 C4

R46 R43

C50

L5

C51 .1uF

D12

R47 1002

TERM
1002 1002 1002

1002

R48

R7 1002 1002 R9
J1
RS T

1002 R1
C12

C15

.1uF

.1uF

C7 .1uF
+ C24

R44 R49

1002

C39

1002

1002

330uF 50V 330uF

R37

R45

.1uF

.1uF .1uF .1uF

R25 C31 R19 R28 R33 C32 R30 1002

V1 C28 C27 U10

R6 1002 R5 1002 R2 1002

1002

.1uF .1uF

1002

1002 1002

WattMaster Controls, Inc WQVGA Graphical Interface YS102178 R4
MADE IN USA

SW1

R13 1002

R8 1002

OFF

OPT1 OPT2 OPT3 OPT4

D11

SERIAL #

5V

3.3V 2.5V

C34 C40

.1uF

.1uF

D1

.1uF

R15 C29 1002
.1uF

U11 Q2

.1uF

1002 R18 C30

1002

.1uF

U9

R11

LTC3824

D2

R31 R32

1002

1002

C36

R35 1002 U13
1002
L1

.1uF

L4

C3 C2 C35

1002 .1uF
.1uF

C41

1002 R34

1002 R16

R41

GND R T
5V
R21 1002 1002
R23 1002
R39

System Manager TS-L (Back View)

RS T

+

Connect to T, SH, R terminals on HVAC Unit Controller
18-30 VAC (6 VA)
Line Voltage

4GB

Modular System Manager SD (Back View)
Modular System Manager SD

LT1785

ALARM

MENU

UP ENTER

RS-485 COMM LOOP WIRE "R" TO "R", "T" TO "T", "SHLD" TO "SHLD"
VCCX-IP CONTROLLER

DOWN
www.aaon.com AAON P/N: ASM07424

BINARY INPUTS BI1 = PROOF OF AIRFLOW BI2 = DIRTY FILTER BI3 = HOOD ON/OFF BI4 = REMOTE OCCUPIED BI5 = REMOTE COOLING BI6 = REMOTE HEATING BI7 = REMOTE DEHUMID BI8 = EMERG SHUTDOWN
ANALOG INPUTS AI1 = SPACE TEMPERATURE AI2 = SPACE SLIDE OFFSET AI3 = SUPPLY AIR TEMPERATURE AI4 = RETURN AIR TEMPERATURE AI5 = BUILDING PRESSURE AI6 = SUPPLY AIR TEMP RESET AI7 = OUTDOOR AIR TEMPERATURE AI8 = NOT CONNECTED USE DUCT
STATIC CONNECTOR

RELAY CONTACT RATING IS 1 AMP MAX @ 24 VAC
MAIN FAN RELAY 2
RELAY 3
RELAY 4 RELAY 5 RELAY 6 RELAY 7
RELAY 8
RELAY COMMON

DUCT STATIC
24 VAC POWER ONLY
WARNING! POLARITY MUST BE OBSERVED
OR THE CONTROLLER
WILL BE DAMAGED

BACNET + = R BACNET SHIELD = SH
BACNET ­ = T
MAIN SUPPLY FAN VFD = AO1 ECONOMIZER / WSE = AO2 MOD HEATING = AO3 EXHAUST / RETURN = AO4 FAN VFD
USB FLASH ONLY

GND +24 VAC

LABEL P/N G122040

DUAL E-BUS

10/100 ETHERNET

18-30 VAC (15 VA)
Line Voltage

Modular Service Tool SD

VAV/Zone BACnet® (VAVZB)
Controller Package
Line Voltage 18-30 VAC (10 VA)

VAV/Zone BACnet® (VAVZB)
Controller Package
Line Voltage 18-30 VAC (10 VA)

VAV/Zone BACnet® (VAVZB)
Controller Package
Line Voltage 18-30 VAC (10 VA)

Note: Multiple VAV/Zone BACnet® Controllers can be connected to a single transformer if desired. However, polarity must be observed or damage to the Controller(s) will result. Please refer to the VAV/Zone BACnet® Controller Package Technical Guide for transformer sizing.

Connect to next VAV/Zone BACnet® Controller
on local loop

10

RS-485 LOOP

APPENDIX A - TERMINAL WIRING Networked Multiple RS-485 Loop Wiring
LT1785

Figure 6: Network Multiple RS-485 Loop Wiring

MiniLink PD 5 Technical Guide

Typical Multiple Loop Networked System With MiniLink Polling Device & VAV/Zone BACnet® (VAVZB) Controllers

CommLink 6 Front View

CommLink 6

LOOP

TX USB

RX USB

USB

STAT ETH

STAT

ETH

TX

RX ETH

LINK ETH

COMM USB

NETWORK

SOFTWARE

Back View

MULTIPLE SINGLE HIGH LOW
R (+) SHLD T (-)
GND 24VAC

10/100 ETHERNET LNK ACT

COMPUTER USB

2D BARCODE

LOOP

BAUD

SERIAL # 485 LOOP POWER

Note: CommLink Must Be Set For Multiple Loop Operation

Note: Either a Modular System Manager SD, Moduluar Service Tool SD, or computer with Prism 2 software installed can be used to program and configure the Orion system.
110VAC to 24VAC Power Pack

R GT

T SHLD R

Typical terminal blocks. All wiring to be T to T, SHLD (G) to SHLD (G) & R to R.

HVAC Unit Controller (VCCX-IP shown)

TERM For stand-alone applications both jumpers must be ON.

C13 C11 C10 C9

System Manager TS-L
Note: The SMTS-L is an end-user interface only. It cannot be used to configure the controllers.

1002

1002 R10

R12

R22 1002
R24 1002
R27 1002
1002 R29

.1uF

.1uF

C26

C25

.1uF R20 C23
1002

X3 66.000Mhz

C14 .1uF
C1 .1uF

C20 .1uF

C19 .1uF

R36 1002

C6 C8 .1uF

.1uF C18 .1uF C16

C17

.1uF

1002

1002

.1uF

R14 1002

RTC

1002

CAL 1002

R17 R26 C45 X2
J3

8.00Mhz

R40

.1uF

.1uF

R42 C5 C4

R46 R43

C50

L5

C51 .1uF

D12

R47 1002

TERM
1002 1002 1002

1002

R48

R7 1002 1002 R9
J1
RS T

1002 R1
C12

C15

.1uF

.1uF

C7 .1uF
+ C24

R44 R49

1002

C39

1002

1002

330uF 50V 330uF

R37

R45

.1uF

.1uF .1uF .1uF

R25 C31 R19 R28 R33 C32 R30 1002

V1 C28 C27 U10

R6 1002 R5 1002 R2 1002

1002

.1uF .1uF

1002

1002 1002

WattMaster Controls, Inc WQVGA Graphical Interface YS102178 R4
MADE IN USA

SW1

R13 1002

R8 1002

OFF

OPT1 OPT2 OPT3 OPT4

D11

SERIAL #

5V

3.3V 2.5V

C34 C40

.1uF

.1uF

D1

.1uF

R15 C29 1002
.1uF

U11 Q2

.1uF

1002 R18 C30

1002

.1uF

U9

R11

LTC3824

D2

R31 R32

1002

1002

C36

R35 1002 U13
1002
L1

.1uF

L4

C3 C2 C35

1002 .1uF
.1uF

C41

1002 R34

1002 R16

R41

GND R T
5V
R21 1002 1002
R23 1002
R39

System Manager TS-L (Back View)

RS T

+

BLACK (R) BARE (S) WHITE (T)
RED (18-30 VAC) BROWN (GND)

Connect to T, SH, R terminals on HVAC Unit Controller
18-30 VAC (6 VA)
Line Voltage

4GB

Modular System Manager SD (Back View)

LT1785

ALARM

MENU

UP ENTER

RS-485 COMM LOOP WIRE "R" TO "R", "T" TO "T", "SHLD" TO "SHLD"
VCCX-IP CONTROLLER

DOWN
www.aaon.com AAON P/N: ASM07424

BINARY INPUTS BI1 = PROOF OF AIRFLOW BI2 = DIRTY FILTER BI3 = HOOD ON/OFF BI4 = REMOTE OCCUPIED BI5 = REMOTE COOLING BI6 = REMOTE HEATING BI7 = REMOTE DEHUMID BI8 = EMERG SHUTDOWN
ANALOG INPUTS AI1 = SPACE TEMPERATURE AI2 = SPACE SLIDE OFFSET AI3 = SUPPLY AIR TEMPERATURE AI4 = RETURN AIR TEMPERATURE AI5 = BUILDING PRESSURE AI6 = SUPPLY AIR TEMP RESET AI7 = OUTDOOR AIR TEMPERATURE AI8 = NOT CONNECTED USE DUCT
STATIC CONNECTOR

RELAY CONTACT RATING IS 1 AMP MAX @ 24 VAC
MAIN FAN RELAY 2
RELAY 3
RELAY 4 RELAY 5 RELAY 6 RELAY 7
RELAY 8
RELAY COMMON

DUCT STATIC
24 VAC POWER ONLY
WARNING! POLARITY MUST BE OBSERVED
OR THE CONTROLLER
WILL BE DAMAGED

BACNET + = R BACNET SHIELD = SH
BACNET ­ = T
MAIN SUPPLY FAN VFD = AO1 ECONOMIZER / WSE = AO2 MOD HEATING = AO3 EXHAUST / RETURN = AO4 FAN VFD
USB FLASH ONLY

GND +24 VAC

LABEL P/N G122040

DUAL E-BUS

10/100 ETHERNET

18-30 VAC (15 VA)
Line Voltage

Modular Service Tool SD

Connect to Loop 2 HVAC Unit Controller and VAV/Zone BACnet® Controllers

Modular System Manager SD

OFF OFF

MiniLink PD 5 Loop 1

Local Local

LOCAL
T SH R
LOCAL LOOP WIRE TERMINALS

NETWORK
R SH
T
NETWORK LOOP WIRE TERMINALS

www.aaon.com
MINILINK PD 5 AAON P/N: ASM01626
ADDRESS DIP SWITCH
1 2 4 8 16 32 NET LOOP ON FOR HI SPD
24 VAC POWER ONLY WARNING! POLARITY MUST BE OBSERVED OR THE BOARD WILL BE DAMAGED

Network Network

LABEL P/N: G124890
GND +24 VAC

Line Voltage
18-30 VAC (6 VA)
MiniLink PD 5 Loop 2

VAV/Zone BACnet® (VAVZB)
Controller Package
Line Voltage 18-30 VAC (10 VA)
Local

Local

LABEL P/N: G124890
GND +24 VAC

LOCAL
T SH R
LOCAL LOOP WIRE TERMINALS

NETWORK
R SH
T
NETWORK LOOP WIRE TERMINALS

www.aaon.com
MINILINK PD 5 AAON P/N: ASM01626
ADDRESS DIP SWITCH
1 2 4 8 16 32 NET LOOP ON FOR HI SPD
24 VAC POWER ONLY WARNING! POLARITY MUST BE OBSERVED OR THE BOARD WILL BE DAMAGED

Network Network
Connect to MiniLink PD 5 Loop 3

VAV/Zone BACnet® (VAVZB)
Controller
Package

VAV/Zone BACnet® (VAVZB)
Controller
Package

Line Voltage
18-30 VAC (10 VA)

Line Voltage
18-30 VAC (10 VA)

Note: Multiple VAV/Zone BACnet® Controllers can be connected to a single transformer if desired. However, polarity must be observed or damage to the Controller(s) will result. Please refer to the VAV/Zone BACnet® Controller Package Technical Guide for transformer sizing.

Connect to next VAV/Zone BACnet® Controller
on local loop

Line Voltage
18-30 VAC (6 VA)

11

APPENDIX B - MODULAR WIRING Power/Comm Board Wiring

NOTE: The MiniLink PD 5 will connect to a Power/Comm Board Only If Power/Comm Cables are Used to Daisy-Chain Between VAV/Zone Controllers.
WARNING!
DO NOT GROUND THE 24V TRANSFORMER THAT IS TO BE USED WITH THE POWER/COMM BOARDS. GROUNDING OF THE TRANSFORMER WILL DAMAGE THE POWER/COMM BOARD AND ALL BOARDS CONNECTED TO IT. A SEPARATE TRANSFORMER MUST BE USED FOR EACH POWER/COMM BOARD. NO EXCEPTIONS. DO NOT CONNECT ANY OTHER DEVICES TO THE TRANSFORMER USED FOR THE POWER/COMM BOARD!

A Power/Comm Cable Can Be Used To Connect With The MiniLink PD 5's Local Loop Connection Instead Of Using 2-Conductor Twisted Pair With Shield Cable. You Can Also Use A Power/Comm Cable To Connect With Another Power/Comm Board, A System Manager Or A VAV/Zone Controller.

If Desired, Instead Of Using A Power/Comm Cable, You Can Use 2-Conductor Twisted Pair With Shield Cable To Connect To The Power/Comm Board From The Unit Controller, MiniLink PD 5's Local Loop Connection, Or Another Power/Comm Board.

Line Voltage

18-30 VAC

24 VAC Transformer (By Others)

All Comm Loop Wiring Is

Local Loop

Straight Through

RS-485

T

T

T

T

9600 or 57,600 SH SH SH SH

Baud

R

R

R

R

4 Amp Slow Blow Fuse

C

R

US

NOTE: Diagram Shown Is For Wiring Of Power/Comm Board When Used For Connecting Local Loop Devices Such As VAV/Zone Controllers, System Manager(s), and Other Power/Comm Boards.

Local Loop RS-485

Power/Comm Cable To Other Power/Comm Board(s), System Manager, Or VAV/Zone Controllers On Local Loop Only.
Figure 7: Power Comm Board Wiring

MiniLink PD 5 Technical Guide

12

APPENDIX B - MODULAR WIRING Modular Wiring - Legacy MiniLink PD 5

Connect local loop comm cable to Power/Comm board (if used)

R44 1002

LOCAL

COMM

T

SH

R

TB1

U10

1002 R27 .1uF C37

J6 LOOP DRV

R26

U8

1002

PD DRV
1002 R25

1002 R24
R23 1002 C30 .1uF

C22

PDSTAT2

C23

PDSTAT1

C24

PD COMM

1002 R4 1002 R1 1002 R3
YS102398 REV 3 PIC32 MLPD MADE IN USA

R22 J3 1002

PD

Caution: Disconnect all communication loop wiring from the MiniLink before removing power from the controller. Reconnect power and then reconnect the communication wiring loop.

J1
ML

R2 1002 R43 1002

COMM

NETWORK

R

SH

T

.1uF C40 1002 R31

TB2

SERIAL #
U12

NET DRV D4

J7

J8

1002

1002

ADDRESS
1002

SW2

1002

1

OFF

1002

2

1002

4

1002 R20

8

1002 R21

16

1002 R46

32

NET

LOOP

C33 .1uF

ON FOR HI SPD

POWER

On multiple loop systems, connect modular cable to the next MiniLink's network comm connector.

GND 18-30 VAC

24 VAC Transformer Size For 6 VA Max. Load

Figure 8: Modular Wiring - Legacy MiniLink PD 5

MiniLink PD 5 Technical Guide

13

RS-485 LOOP

APPENDIX B - MODULAR WIRING Networked Multiple RS-485 Loop Modular System Wiring

Figure 9: RS-485 Networked Multiple Loop Modular System Wiring (Legacy MiniLink Module)

MiniLink PD 5 Technical Guide

Typical Networked Multiple Loop Modular System with MiniLink Polling Devices & VAV/Zone Controllers

R GT

T SHLD R

Note: Either a Modular System Manager SD, Moduluar Service Tool SD, or computer with Prism 2 software installed can be used to program and configure the Orion system.

CommLink 6 Front View

CommLink 6

LOOP

TX USB

RX USB

USB

STAT ETH

STAT

ETH

TX

RX ETH

LINK ETH

COMM USB

NETWORK

SOFTWARE

Back View

MULTIPLE SINGLE HIGH LOW
R (+) SHLD T (-)
GND 24VAC

10/100 ETHERNET LNK ACT

COMPUTER USB

2D BARCODE

LOOP

BAUD

SERIAL # 485 LOOP POWER

110VAC to 24VAC power pack

Typical terminal blocks. All wiring to be T to T, SHLD (G) to SHLD (G) & R to R.

Note: The SMTS-L is an

end-user interface only. 24 VAC - Size transformer

It cannot be used to

for required VA load

configure the controllers. Class 2 100 VA max

TB2

System Manager TS-L
Connect To Modular I/O Connectors Located On Back Of The System Manager

Line Voltage
Power/Comm Board
25

F1

24

VAC

P2

SHLD

R

POWER & COMM

DIST. BOARD

YS101856

REV. 0

POWER & COMM OUT
D1 V1
4A
COMMP IN

P5 C1
TB1
T

P3 R1 POWER LD1

P4

P1

Note: CommLink Must Be Set For Multiple Loop Operation

HVAC Unit Controller (VCCX-IP shown)

Modular Service Tool SD

Connect to Loop 2 HVAC Unit Controller and VAV/Zone BACnet® Controllers

MiniLink PD 5 Loop 1

Local

R44 1002

LOCAL

COMM

T

SH

R

TB1

U10

1002 R27 .1uF C37

J6 LOOP DRV

Local

R26

U8

1002

PD DRV
1002 R25

1002 R24
R23 1002 C30 .1uF

C22

PDSTAT2

C23

PDSTAT1

C24

PD COMM

1002 R4 1002 R1 1002 R3 YS102398 REV 3 PIC32 MLPD MADE IN USA

PD

R22 J3 1002

Line Voltage

J1 ML

R2 1002 R43 1002

COMM

NETWORK

R

SH

T
.1uF C40 1002 R31

TB2

SERIAL # U12

NET DRV D4

Network

J7

J8

1002

1002

1002

SW2

1002

OFF

1002

1002 1002 R20 1002 R21 1002 R46

1 2 4 8 16 32

C33 .1uF

ADDRESS POWER

Network

18-30 VAC (10 VA)

MiniLink PD 5 Loop 2

Modular System Manager SD

Line Voltage

Power/Comm Board

TB2

24

VAC

24 VAC - Size transformer

for required VA load

25

F1

Class 2 100 VA max

P1

Connect to other VAV/Zone
controllers on loop

POWER & COMM OUT
D1 V1
4A
COMMP IN

P3 R1 POWER LD1

P2

REV. 0

P4

YS101856

DIST. BOARD

POWER & COMM

R

SHLD

P5 C1
TB1
T

Connect to other VAV/Zone
controllers on loop
Connect to other VAV/Zone
controllers on loop

18-30 VAC

Line

(15 VA)

Voltage

VAV/Zone Controller package (VAV/Zone w/ BACnet shown) with
Modular Adapter

DOWN

MENU

UP ENTER

ALARM

Connect To Next VAV/Zone Controller
On Branch Circuit

Local

R44 1002

LOCAL

COMM

T

SH

R

TB1

U10

1002 R27 .1uF C37

J6 LOOP DRV

R26

U8

1002

PD DRV
1002 R25

1002 R24
R23 1002 C30 .1uF

C22

PDSTAT2

C23

PDSTAT1

C24

PD COMM

1002 R4 1002 R1 1002 R3 YS102398 REV 3 PIC32 MLPD MADE IN USA

PD

R22 J3 1002

Line
Voltage 18-30 VAC
(10 VA)

J1 ML

R2 1002 R43 1002

COMM

NETWORK

R

SH

T
.1uF C40 1002 R31

TB2

SERIAL # U12

NET DRV D4

Network

J7

J8

OFF
C33 .1uF

1002

1002

1002

SW2

1002

1002

1002 1002 R20 1002 R21 1002 R46

1 2 4 8 16 32

ADDRESS POWER

Network

Connect to MiniLink PD 5 Loop 3

UP ENTER

DOWN

MENU

ALARM

VAV/Zone Controller package (VAV/Zone w/ BACnet shown) with
Modular Adapter
Note: For VAV/Zone BACnet Controllers, a maximum of four can be connected to each branch circuit. A total of eight controllers are allowed per Power/Comm board. Use additional Power/Comm boards for systems that exceed eight controllers.

For previous generation VAV/Zone Controllers, a maximum of six can be connected to each branch circuit. A total of 16 controllers are allowed per Power/Comm Board. Use additional Power/Comm boards for systems that exceed 16 controllers.

14

APPENDIX C - CONVERSION WIRING Modular to Terminal Wiring Conversion

Connect local loop terminals to T, SH, and R local loop terminals on first controller on local loop. Be sure to wire T to T, SH to SH, and R to R.

NOTE: This network wiring is not required on single loop systems without a CommLink. When a CommLink is used on single loop systems, connect network loop wire terminals to the CommLink.

T SH
R

LOCAL
T SH R
LOCAL LOOP WIRE TERMINALS

NETWORK
R SH
T
NETWORK LOOP WIRE
TERMINALS

R SH T

OFF

www.aaon.com
MINILINK PD 5 AAON P/N: ASM01626
ADDRESS DIP SWITCH
1 2 4 8 16 32 NET LOOP ON FOR HI SPD
24 VAC POWER ONLY
WARNING! POLARITY MUST BE OBSERVED OR THE BOARD
WILL BE DAMAGED

LABEL P/N: G124890 GND +24 VAC

NOTE: Models manufactured on/after 2024 are not configured for modular wiring Refer to the following diagram to convert modular wiring to terminal wiring.
BLUE
T
BLACK
R SH

WARNING: Disconnect power and communications at both ends . Cutting a live cable could lead to injury or damage to the equipment.

Figure 10: RS-485 Networked Multiple Loop Modular System Wiring (Legacy MiniLink Module)

MiniLink PD 5 Technical Guide

15

MiniLink PD 5 Technical Guide G042660  Rev. D  240621
AAON Controls Support: 866-918-1100
Monday through Friday, 7:00 AM to 5:00 PM Central Time
Controls Support website: www.aaon.com/aaon-controls-technical-support
AAON Factory Technical Support: 918-382-6450 | techsupport@aaon.com NOTE: Before calling Technical Support, please have the model and serial number of the unit available. PARTS: For replacement parts, please contact your local
AAON Representative.
2425 So. Yukon Ave · Tulsa, OK · 74107-2728 Ph: (918) 583-2266 · Fax: (918) 583-6094 Rev. D Created in the USA · © June 2024 AAON All Rights Reserved



References

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