Auto-Zone Control Systems Auto-Zone CV-C User Manual

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Description

The CV-C Controller is a configurable controller that
allows for user configurable inputs and outputs. CV-C
Controllers also have provisions for mounting a Relay
Expansion Board to provide additional heating or cooling
staging capability.

Analog Inputs

Only Analog Input #1 (Space Temp Sensor Only) and
Analog Input #6 (Airflow Sensor Only) have a specific
function that cannot be changed. All other inputs are user
configurable in one of the following modes:

•

0 - Not Used ( Nothing connected to this input )

•

1 - Slide Offset (Requires Flush Mount Wall

Sensor with this Option)

•

2 - Supply Air Temperature

•

3 - Return Air Temperature

•

4 - Mixed Air Temperature

•

5 - Outdoor Air Temperature (Will broadcast to

ALL other controllers)

•

6 - Humidity Sensor (4-20 ma scaling)

•

7 - Humidity Sensor (0-5 VDC scaling)

•

8 - CO² Sensor (4-20 ma scaling)

•

9 - CO² Sensor (0-5 VDC scaling)

10

•

- Relief Pressure Sensor (Requires 0-5 VDC

±0.3" WG Sensor)

11

•

- Dirty Filter Contact (Normally Open)

12

•

- Alarm Contact (Normally Open)

13

•

- Alarm Contact (Normally Closed)

14

•

- Fan Status Contact (Normally Open)

Analog Outputs

There are two Analog Outputs available on this
controller. They are both user configurable as follows:

•

0 - Not Used (Nothing connected to this

output)

•

1 - Economizer (Requires either Supply Air or

Mixed Air Sensor)

•

2 - Relief Fan VFD Signal (Requires Relief

Pressure Sensor)

•

3 - Chilled Water Valve (Requires Supply

Sensor)

•

4 - Hot Water Valve (Requires Supply Sensor)

•

5 - Humidification/De-Humidification

(Requires Humidity Sensor)

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Relay Outputs

Only Relay Output #1 (Fan On/Off Only) has a specific function
that cannot be changed. All other outputs are user configurable
in one of the following modes:

•

0 - Not Used (Nothing connected to this output )

•

1 - Heating Stage

•

2 - Cooling Stage

•

3 - Humidifier Enable

•

4 - De-Humidifier Enable

•

5 - Scheduled Relay from Internal Schedule

•

6 - Scheduled Relay from External Schedule (Only 1

Available!)

There are a total of 12 relays that can be configured. Four are
found on the Controller itself (R2 - R5) and the remaining eight
(R6 - R13) are found on the Optional Relay Expansion Board that
can be connected to the PJ2 expansion input.

Mounting

The CV-C Controller is provided with an integral backplate for
mounting inside of a control enclosure. An optional factory control
enclosure for the CV-C Controller is available.

Technical Data CV-C Controller

Power 24 Volt AC Weight 1.5 lb.
Power Consumption 12 VA Maximum Network Connection RS-485

Operating Temp
Operating Humidity 90% RH Non-CondensingCommunications RS-485 - 9600 Baud

10°F to 149°F

Inputs: Outputs:

Quantity Available Types Quantity Available Types

Type III-10kohm Sensor

6

1 Modular Phone Jack For

WattMaster reserves the right to change specifications without notice

Form: AZ-CVC-DS-01A-599-0101

Optional Airflow or SP Sensor

0-10 VDC Sensor

0-5 VDC Sensor

4-20mA Sensor

Contact Closure

Binar

Protocol HSI Open Protocol Token Passin

Binary

5 Onboard Relays (2 Amp @ 24 VAC

N.O. Contacts with Suppressors

Analog

2 0-10 Volt DC Out

One Year Warranty

Page

1 of 1

Connect To Next Controller And/Or

All Comm Loop Wiring Is

Straight Thru

T

T

SH

SH

R

SH

R

Room Sensor

W

A
R
M
E
R

NORMAL

C
O
O

OVR

L
E
R

AIN2 Thru AIN5 & AIN7 May Be User
Configured For The Following:

0 - Not Used ( Nothing connected to this input)
1 - Slide Offset

(Requires Flush Mount Wall Sensor)
2 - Supply Air Temperature
3 - Return Air Temperature
4 - Mixed Air Temperature
5 - Outdoor Air Temperature

(Will broadcast to ALL other controllers)
6 - Humidity Sensor (4-20 mA scaling)
7 - Humidity Sensor (0-5 VDC scaling)
8 - CO² Sensor (4-20 mA scaling)
9 - CO² Sensor (0-5 VDC scaling)
10 - Relief Pressure Sensor

(Requires 0-5 VDC ±0.3" WG Sensor)
11 - Dirty Filter Contact (Normally Open)
12 - Alarm Contact (Normally Open)
13 - Alarm Contact (Normally Closed)
14 - Fan Status Contact (Normally Open)

MiniLink On Local Loop

T

T

SH

R

R

TMP

GND

AUX

Connection To
AUX Terminal is Reqd
Only When Sensor
Is Specified With
Slide Adjust Option

Local Loop RS-485

9600 Baud

(See Note 3).

CV- C Controller

COMM

T

SHLD

R

TUC5R PLUS
YS101718

INPUTS

12V
AIN

1

AIN

2

AIN

3

AIN

4

AIN

5

GND

GND

AOUT1

AOUT2
AIN

7

GND

PRESSURE
SENSOR

EXPANSION

AIN6 (Phone Jack) Can Only Be Configured
For An Airflow Sensor And Is Used For
Status or To Verify Fan Operation Only

1

2
4

8

16

32
TOKEN

NETWORK

T'STAT

1-3
M
O
C

R1

R2

R3

R4

R5

4-5
M
O
C

GND

24VAC

R - Fan ON/OFF Only

Relay Outputs R2 Thru R5 May Be User
Configured For The Following:

0 - Not Used (Nothing connected to this
output )
1 - Heating Stage
2 - Cooling Stage
3 - Humidifier Enable
4 - De-Humidifier Enable
5 - Scheduled Relay from Internal Schedule
6 - Scheduled Relay from External Schedule

(Only 1 Available!)

Required VA For Transformer

Each CV-C Controller = 20VA Max.

GND

24VAC

See Note 1

Line Voltage

AOUT1 & AOUT2 May Be User Configured For
The Following:

0 - Not Used (Nothing connected to this output)
1 - Economizer

(Requires Supply or Mixed Air Sensor

2 - Relief Fan VFD Signal

(Requires Relief Pressure Sensor)

3 - Chilled Water Valve

(Requires Supply Sensor)
4 - Hot Water Valve (Requires Supply Sensor)
5 - Humidification / De-Humidification

(Requires Humidity Sensor)

Note: All Temperature Sensors Must Be Thermistor Type III
Which Provide 10K Ohms Resistance @77 Deg. F

Caution!

CV-C Controllers Must Have Address Switches Set Between 1
And 30 When Used With CV or CV-EX Systems. Auto-Zone
Plus Systems Require That The Address Switches Be Set
Between 18 And 30.

Note:

The Power To The CV-C Controller Must Be Removed And
Reconnected After Changing The Address Switch Settings In Order
For Any Changes To Take Effect.

Caution:

Disconnect All Communication Loop Wiring From The CV-C Controller
Before Removing Power From The CV-C Controller. Reconnect Power
And Then Reconnect Communication Loop Wiring.

Note:
Set-up, Programming And Monitoring Of The CV-C Controller Requires The
Use Of A Personal Computer And ZoneView AZ Software.

Notes:

1.)24 VAC Must Be Connected So
That All Ground Wires Remain
Common.

2.)All Wiring To Be In Accordance

3.)AllCommunication Wiring To Be
2 Conductor Twisted Pair With
Shield. Use Belden #82760 Or
Equivalent.

With Local And National Electrical
Codes And Specifications.

This Switch Must Be
In The ON Position
As Shown

ADDRESS

Address Switch Shown Is

Set For Address 1

Must Be Unique To The Other Controllers

ADDRESS ADD

ADD

Controller
Address Switch

Address Switch Shown Is

The Address For Each Controller

On The Local Loop

FILENAME

CVCWIR1.CDR

DATE:

07/08/99

PAGE

1

DESCRIPTION:

CV-C Controller Wiring

1
2
4
8

16

These Switches Should Be
In The OFF Position
As Shown

ADDRESS

Set For Address 13

JOB NAME

CONTROLS

DRAWN BY:

B. CREWS

OE747

ADD

4-20ma
Sensor

Note: Terminal that is Labeled
“12V” on the Terminal Block
has been Electrically Modified
and is Actually 24 Volts

+

-

250 ohm Resistor
Installed Between the
AIN2 Input Terminal
and the GND Terminal

Resistor Must be of 1%
Accuracy or Better

The Pull-up Resistor (PU2),
for the Associated In
Must be Removed When a
4-20ma Sensor is Used

put (AIN2),

4-20ma Sensor Installation

INPUTS

12V
AIN

1

AIN

2

AIN

3

AIN

4

AIN

5

GND

GND

AOUT1

AOUT2

AIN

7

GND

PRESSURE
SENSOR

PU1

PU2

PU3
PU4

PU5

PU7

1

2
4

8

16

32
TOKEN

NETWORK

CV- C Controller

0-5VDC
Sensor

Note: Terminal that is Labeled
“12V” on the Terminal Block
has been Electrically Modified
and is Actually 24 Volts

+

-

The Pull-up Resistor (PU4),
for the Associated In
Must be Removed When a
0-5 VDC Sensor is Used

put (AIN4),

EXPANSION

0-5VDC Sensor Installation

INPUTS

12V
AIN

1

AIN

2

AIN

3

AIN

4

AIN

5

GND

GND

AOUT1

AOUT2
AIN

7

GND

PRESSURE
SENSOR

PU1

PU2

PU3
PU4

PU5

PU7

1

2
4

8

16

32
TOKEN

NETWORK

T'STAT

CV- C Controller

Notes:

1.)24 VAC Must Be Connected So
That All Ground Wires Remain
Common.

2.)All Wiring To Be In Accordance
With Local And National Electrical
Codes And Specifications.

EXPANSION

FILENAME

CVCHUMID1.CDR

DATE:

06/01/00

PAGE

1

CV-C Humidity Sensor Wiring

T'STAT

JOB NAME

CONTROLS

DRAWN BY:

DESCRIPTION:

Auto-Zone

B. CREWS

Warning:

If One Transformer Is Used To Power The CV-C Controller And The
Relay Expansion Board, Polarity Must Be Strictly Observed. If The
Polarity Is Reversed, Serious Damage To Both Boards Will Result.

Line Voltage

Required VA For Transformer

Relay Expansion Board = 20VA Max.

See Note 1

Relay Outputs R6 Thru R13 May Be User
Configured For The Following:

0 - Not Used (Nothing connected to this
output )
1 - Heating Stage
2 - Cooling Stage
3 - Humidifier Enable
4 - De-Humidifier Enable
5 - Scheduled Relay from Internal Schedule
6 - Scheduled Relay from External Schedule

(Only 1 Available!)

PRESSURE
SENSOR

EXPANSION

Connect Expansion Board
to CV-C Controller
with Modular Cable

24VAC

GND

24VAC

COM

POWER

N.O. CONTACTS

1-8

RELAY COMMONS 9,10

CV- C Controller

RELAY 1

RELAY 2

RELAY 3

RELAY 4

RELAY 5

RELAY 6

RELAY 7

RELAY 8

T'STAT

IN OUT

EXPANSION PORT

U1

Required VA For Transformer

Each CV-C Controller = 20VA Max.

GND

GND

Line Voltage

24VAC

24VAC

See Note 1

Not Used

Caution!

Relay Expansion Board Must Have Address Switches Set As
Shown Or The Board Will Not Function.

ADDRESS

U3

Caution:

Disconnect The Modular Cable Between The CV-C Controller And The

U4

Relay Expansion Board Before Removing Power From The Relay
Expansion Board. Reconnect Power And Then Reconnect The Modular
Cable Between The CV-C Controller And The Relay Expansion Board.

U5

Notes:

1.)24 VAC Must Be Connected So
That All Ground Wires Remain
Common.

2.)All Wiring To Be In Accordance
With Local And National Electrical
Codes And Specifications.

Relay Expansion Board

Note:
Set-up, Programming And Monitoring Of The CV-C Controller Requires The
Use Of A Personal Computer And ZoneView AZ Software.

FILENAME

CVCWIR1.CDR

DATE:

PAGE

1

JOB NAME

CONTROLS

07/08/99

DRAWN BY:

B. CREWS

DESCRIPTION:

OE351

CV-C Relay Expansion Board Wiring

CV-C Controller LED Descriptions

COMMUNICATIONS - LED

POWER - LED

NOT USED

DIAGNOSTIC BLINK CODE - LED

The CV-C Controller uses an on board LED to indicate various diagnostic conditions
during powerup and operation. The CV-C Controller LED is labeled ""COM". Starting
with power up the LED blink codes are as follows:

COMM

INPUTS

T

SHLD

R

12V
AIN

1

AIN

2

AIN

3

AIN

4

AIN

5

GND

GND

AOUT1

AOUT2
AIN

7

GND

PRESSURE
SENSOR

EXPANSION

TUC5R PLUS
YS101718

1

2
4

8

16

32
TOKEN

NETWORK

T'STAT

RELAY #1 ENERGIZED - LED

1-3
M

CO

R1

R2

R3

R4

R5

4-5
M

CO

RELAY #2 ENERGIZED - LED

RELAY #3 ENERGIZED - LED

RELAY #4 ENERGIZED - LED

RELAY #5 ENERGIZED - LED

GND

24VAC

Off for five seconds
SCAN LED blinks the board address (Address 14 = 14 blinks)
Five second pause
Twenty second time delay - LED blinks twenty times
Status code is repeatedly blinked every ten seconds to indicate controller status:

Priority No. of Blinks Status
Lowest 1 Normal Operation

- 2 Override Active

- 3 Bad Zone or Airflow Sensor

- 4 (Not used on CV Units)
Highest 5 Communication Failure

Only the highest priority failure code will be shown. You must correct the highest priority
alarm before other problems will be indicated.

JOB NAME

FILENAME

CVCLED1A.CDR

DATE:

06/01/00

PAGE

DESCRIPTION:

CONTROLS

DRAWN BY:

Auto-Zone

1

LED Descriptions

B. CREWS

Section 2

Table of Contents

Initialization ................................................................................................................. 1

Operating Summary.................................................................................................... 1

Comm LED Diagnostic Blinks ...................................................................................3

Analog Inputs............................................................................................................... 4

Analog Outputs............................................................................................................5

Relay Outputs ..............................................................................................................5

Pushbutton Override Operation ................................................................................6

HVAC Mode of Operation.......................................................................................... 6

Occupied/Unoccupied Mode of Operation ...............................................................8

Daylight Savings Adjustments ................................................................................... 8

Off Mode of Operation................................................................................................ 9

Vent Mode Operation ................................................................................................. 9

Fan Only Mode Operation ......................................................................................... 9

DX Cooling Operation .............................................................................................. 10

Chilled Water Valve Operation ............................................................................... 13

Step Heating Operation ............................................................................................15

Hot Water Valve Operation ..................................................................................... 18

Fan Control ................................................................................................................ 19

Humidity Control ......................................................................................................20

Humidification ( Relay Enable ).....................................................................................................20

Humidification ( Analog Control ).................................................................................................20

De-Humidification ( Relay Enable )...............................................................................................20

Relief Pressure Control............................................................................................. 21

Economizer Control ..................................................................................................21

Indoor Air Quality..................................................................................................... 23

Scheduled Relays .......................................................................................................23

Fan Status................................................................................................................... 24

Alarm Contact ........................................................................................................... 24

Slide Offset Option .................................................................................................... 24

Dirty Filter Contact ...................................................................................................24

Static Pressure Sensor............................................................................................... 25

Alarm Detection & Reporting .................................................................................. 26

PID Operation............................................................................................................ 28

Auto-Zone CV-C

Initialization

Initialization

InitializationInitialization

On system powerup LED1 and LED2 are extinguished. After 5 seconds LED2 will blink
out the address of the controller ( Address Switch Setting ). Following this, the LED2
LED will extinguish for another 5 seconds and then begin to blink for a 20 second startup
delay. At the conclusion of this 20 second period, the LED2 LED will begin blinking a
diagnostic code every 10 seconds. This code is described later in this document. The
duration of a powerup initialization sequence is roughly 1 minute plus the user defined
Staggered Start delay described later in this document.

During this initialization period, the controller retrieves all operating setpoints from its
non-volatile EEPROM memory and initializes all outputs to an off condition.

NOTE: All future references to the Constant Volume

Configurable unit in this document use CVC as the
designation.

Section 2

Operating Summary

Operating Summary

Operating SummaryOperating Summary

At all times, after the conclusion of the initialization sequence, the CVC performs a
specific set of operating instructions in the following order: ( a - g Repeat Continuously )

a. Read Analog Inputs for Temperatures, Overrides and Lockout or Reset contact
closures.

b. Check the RS-485 communications port for any new setpoints from the System
Manager and keeps the status updated for the System Manager.

c. If the push-button override is active, it checks the timer to see if the override is
finished.

d. Calculates the current occupied/unoccupied mode from its internal week
scheduling.

e. Calculates what state the output relays and analog output should be set to.

Sequence of Operation 2-1

Section 2

f. Updates the diagnostic LED2 blinking.

g. Stores data in the internal trend log if ready for another log.

Auto-Zone CV-C

2-2 Sequence of Operation

Auto-Zone CV-C

Comm LED Diagnostic

Comm LED Diagnostic

Comm LED DiagnosticComm LED Diagnostic
Blinks

Blinks

BlinksBlinks

As mentioned earlier, the COMM LED will blink a diagnostic code every 10 seconds
during normal operations. If this LED is off continuously or on continuously, there is a
total failure in the controller and it should be replaced. The diagnostic blinks are
described below in order of priority. The highest priority condition must be corrected
before any lower conditions can be observed and corrected. 1 Blink is the lowest priority
and 5 blinks is the highest priority.

1 Blink Normal operations. No alarm conditions
2 Blinks Pushbutton Override is active during Unoccupied Hours.
3 Blinks Zone Temperature Sensor failure detected.
4 Blinks Not Used in this Controller
5 Blinks RS-485 communications lost

Section 2

Sequence of Operation 2-3