Johnson Controls AD-1272 User Manual

Refer to the QuickLIT website for the most up-to-date version of this document.
AD-1272 Advanced Thermal Dispersion Probe Airflow Measuring System
Technical Bulletin
1
Document Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Navigating the Start-Up Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Membrane Pushbuttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Navigating the Menu Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Navigating the Operator Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Enable, Disable, and Change the Operator PIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Flow Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Display Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Updating Display Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Selecting Custom Text. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Analog Output 1 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Updating Analog Output 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Analog Output 2 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Updating Analog Output 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Temperature Output LPF (Low Pass Filter). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Updating Temperature Output LPF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Flow Output LPF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Updating Low Output LPF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Analog Output Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Configuring the Analog Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Temperature Balance Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
K-Factor Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Configuring the K-Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
AD-1272 Advanced Thermal Dispersion Probe Airflow
Measuring System
Technical Bulletin
AD-1272
Code No. LIT-12012477
Issued December 2017

Johnson Controls AD-1272 Specifications

General

Accuracy	±1% of Full Scale
Type	Differential Pressure Transmitter
Output Signal	4 to 20 mA
Power Supply	12 to 30 VDC
Application	HVAC systems

Summary

Navigating the Operator Menu

Enable Operator PIN

Flow Configuration

Configures system variables like duct size, shape, elevation, and process units.

Display Configuration

Analog Output 1 Parameters

Selects process variables (flow, temp, none) for Analog Output 1.

Analog Output 2 Parameters

Selects process variables (flow, temp, none) for Analog Output 2.

Analog Output Calibration

Adjusts the span and offset for Analog Outputs 1 and 2 for resolution.

Temperature Balance Configuration

K-Factor Configuration

Enables K-Factor calculation/selection and configures gain and offset values.

BACnet Configuration

Configures BACnet settings and enables/disables BACnet communication.

BACnet Flow Alarm Configuration

Configures flow alarm setpoints, deadband, and delay for BACnet.

BACnet Temperature Alarm Configuration

Configures temperature alarm setpoints, deadband, and delay for BACnet.

Flow Configuration

Duct Setup

Configures duct shape, diameter, width, height, and area.

Display Configuration

Analog Output 1 Parameters

Updating Analog Output 1

Analog Output 2 Parameters

Updating Analog Output 2

Temperature Output LPF (Low Pass Filter)

Flow Output LPF

Analog Output Calibration

Output 1 Offset

Sets the zero point (offset) for Analog Output 1 (e.g., 0.000 mA).

Output 1 Low Span

Sets the low end of the span for Analog Output 1 (e.g., 4 mA).

Output 1 High Span

Sets the high end of the span for Analog Output 1 (e.g., 20 mA).

Output 2 Offset

Sets the zero point (offset) for Analog Output 2 (e.g., 0.000 mA).

Output 2 Low Span

Sets the low end of the span for Analog Output 2 (e.g., 4 mA).

Output 2 High Span

Sets the high end of the span for Analog Output 2 (e.g., 20 mA).

Design Range Low

Sets the low range value for output flow spanning.

Design Range High

Sets the high range value for output flow spanning.

Temperature Range Low

Temperature Range High

Configuring the Analog Output

Temperature Balance Configuration

Temperature Balance Enable

Temperature Offset Selection

K-Factor Configuration

K-Factor Enable?

Option to turn the K-Factor calculation on or off.

Calculate K-Factor?

Selects whether to calculate K-Factor automatically or manually.

Manual Gain

Manually updates or enters the K-Factor gain value.

Manual Offset

Manually updates or enters the K-Factor offset value.

Number of Data Points

System at Point 1

Point 1 Velocity

System at Point 2

Point 2 Velocity

System at Point 3

Point 3 Velocity

Generate K-Factor

Calculates and displays the K-Factor gain and offset values.

Configuring the K-Factor

BACnet Network Configuration

BACNet On/Off

BACnet Instance

BACnet Address

BACnet Objects

BACnet Flow Alarm Configuration

Alarm Deadband Setpoint

Alarm Delay

BACnet Temperature Alarm Configuration

Alarm Low On/Off

Alarm High On/Off

Alarm Low Setpoint

Alarm High Setpoint

Navigating the Supervisor Menu

Enable Supervisor PIN

Sensor Management

Factory Default

Sensor Management

Scan for Sensors

Reset Sensor Network

Factory Default Reset

Troubleshooting