HA40 4-Channel Controller

3 Motherboard Interface PCB

(P/N 10-0215)

The HA40 Motherboard shown in Figure 3.2 is the interface between the Display / CPU assembly and all other system I/O devices. The Display / CPU assembly attaches to the motherboard with 4-standoffs and connects via ribbon cable to S1. Several input options, described in the following sections, are available that may be installed into the Sensor Input Option P1 connector located on the lower left side of the motherboard. The middle position P2 connector is for the 10-0223 4-20mA Output option and the right position P3 connector is for the 10-0222 Discrete Relay option. Other option devices such as Modbus RTU RS-485, Ethernet and a data logger may also be installed to connectors located on the Motherboard.

The Motherboard PCB contains a 24 VDC universal input (100- 240 VAC) switching power supply with up to 350mA available at TB3 Auxiliary Power Output terminals (Figure 3.1). If AC power is unavailable, or if a DC battery back-up supply is needed, TB1 provides terminals for DC power input. Blocking diodes isolate internal and external DC supplies as shown in Figure 3-1.

U niversal Input

 

 

 

 

2 Amp, 250V, 5x20mm fuse located under

P ow er Supply

AC In

 

 

 

 

 

 

terminal cover.

D C Out

 

 

 

 

WARNING: For continued protection against

+

 

 

 

2-Amp

 

fire replace only with same type and rating of fu

 

 

 

 

250V

 

 

 

 

 

 

 

Fuse

 

 

 

T o Local

 

 

 

 

 

 

 

C ontroller

 

 

 

 

 

 

 

C ircuits

 

 

 

 

 

 

 

T o optional

T B1

 

T B3

 

 

T B5

 

 

 

 

 

 

 

 

24VDC terminals

 

 

 

 

 

 

 

(p/n 10-0221)

 

 

 

 

 

 

 

+

-

+

-

L1

L2

GN D

SHOCK HAZARD

D C PW R

A U X

100 -240 VA C

RISK OF ELECTRICAL

. 45A 50

60 H z

SU PPLY

POW ER

SHOCK - DISCONNECT OR

A C POW ER

IN PU T

OU T PU T

TURN OFF POWER

 

 

(only with AC primary power)

 

 

 

 

 

 

 

 

BEFORE SERVICING THE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EQUIPMENT

Figure 3-1. DC Power Supply Schematic

TB2 offers field terminals for a remote alarm reset switch. The motherboard also includes alarm relays 1 & 2 (K1 & K2) and their indicating LED’s. TB4 provides field wiring terminals for these relays. TB5 is for connection to the 85-240 VAC power source. J2 is a 2-pin connector for powering the optional part # 1000-1892 audible annunciator.

HA40 Technical Manual

3-2

Revision 1 (08/08)

Page 22 Page 24
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Honeywell HA40 technical manual Motherboard Interface PCB, Shock Hazard
Page 22 Page 24

HA40 specifications

The Honeywell HA40 is an advanced air quality monitor that offers a multitude of features designed to provide users with accurate and real-time data regarding their indoor air conditions. As part of Honeywell’s commitment to improving the environments where people live and work, the HA40 stands out as an essential tool for continuous air quality assessment.

One of the main features of the Honeywell HA40 is its capability to measure a variety of air pollutants. It provides real-time readings of particulate matter (PM2.5 and PM10), volatile organic compounds (VOCs), carbon dioxide (CO2), and formaldehyde levels. This comprehensive monitoring allows users to understand their air quality better and take appropriate actions to improve it.

The HA40 is equipped with advanced sensor technology that enhances its accuracy and reliability. The device utilizes laser scattering methods to precisely detect particulate matter, which offers detailed information on the concentration of airborne particles. Additionally, its integrated VOC sensor leverages photoionization to deliver quick and exact results concerning the presence of harmful compounds in the air.

Another notable characteristic of the Honeywell HA40 is its user-friendly design. The device features a clear, intuitive display that presents data in an easily understandable format. Users can quickly assess air quality levels at a glance and receive alerts when pollutants exceed predefined thresholds. Furthermore, the HA40 is compact and portable, making it suitable for both home and office use.

Connectivity is another strong point of the Honeywell HA40. The device can be connected to a smartphone application, enabling users to monitor air quality remotely. This app provides additional functionalities such as trend analysis, historical data tracking, and personalized recommendations for improving indoor air quality.

Power efficiency is also a priority with the HA40, featuring a low-power design that extends battery life and reduces the frequency of recharging. This makes it convenient for users who wish to place the monitor in various locations without the hassle of constant maintenance.

In summary, the Honeywell HA40 represents a significant advancement in indoor air quality monitoring. With its accurate sensors, user-friendly interface, and connectivity options, it empowers users to maintain a healthier living and working environment.
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