PSI0 DSIO DSIO HSIO SIO

( pRocEMssOp (RELAY) (EXV (LID) (4 I;W;UT

DRIVER)

Fig. 19 - Sensor Bus Wiring (Communications)

LOW VOLTAGE RELAY MODULE (DSIO) (Fig. 21)

Inputs - Inputs on strip 53 are discrete inputs (ON/OFF). When 24vat power is applied across the 2 terminals in a channel it reads as on signal. Zero v reads as an off signal.

Outputs - Terminal strips J4 and JS are internal relays whose coils are powered-up and powered-off by a signal from micro- processor. The relays switch the circuit to which they are connected. No power is supplied to these connections by

DSIO module. L

--/%o-6 93 -

 

 

S E N S O R B U S C O N N E C T O R

 

/

PROCESSOR MODULE (PSIO) (Fig. 20)

Inputs - Each input channel has 3 terminals; only 2 of the terminals are used. Application of machine determines which terminals are used. Always refer to individual unit wiring for terminal numbers.

Outputs - Output is 24 vdc. There are 3 terminals, only 2 of which are used, depending on application. Refer to unit wiring diagram.

NOTE: Address switches (see Fig. 20) must be set at 01 (different when CCN connected).

fL.w-- 6%2 0

CHASSIS

P-G R O U N D

RED STATUS LIGHT -b

9e

ZTPUT “7 I :

RELAYS “, I :

1 $i 1 !;i

2,4,6, AND 8 ARE GRQUND (C)

 

NEL I2

 

I I

 

IO

 

9

%YoN

8

IP 0

-( REAR)

N E T W O R K

SNNECTOR

C&MON

7

2:

 

COMMON

 

NO

6

&MON

2:

5

A D D R E S S

0

S W I T C H E S <0

’(FORWARD)

S E N S O R B U S

C O N N E C T O R J8

/

7A D D R E S S A D J U S T M E N T

(NOT SHOWN) ON UNDERSIDE

LEGEND

PSI0

I-

PWR - Power

Fig. 20 - Processor Module (PSIO)

-Communications Bus

ii!“” - Normally Closed 1 bb;n$ly Open

I%

Fig. 21 - Low-Voltage Relay Module (DSIO)

6 5

Page 64 Page 66
Page 65
Image 65
Carrier 040-420 specifications Sensor Bus Wiring Communications, Processor Module Psio
Page 64 Page 66

040-420 specifications

The Carrier 040-420 is a highly regarded commercial HVAC unit specifically designed for efficient heating and cooling in medium- to large-sized buildings. Known for its reliability and advanced technology, this system is ideal for a variety of applications ranging from offices to industrial spaces.

One of the main features of the Carrier 040-420 is its energy efficiency. The unit utilizes advanced compressors and a high-efficiency heat exchanger, which work together to minimize energy consumption while maximizing performance. This is crucial in today’s energy-conscious environment, as businesses strive to reduce operational costs and their carbon footprint. The unit also boasts a high SEER (Seasonal Energy Efficiency Ratio) rating, making it an attractive option for those looking to lower their utility bills.

Equipped with advanced inverter-driven technology, the Carrier 040-420 allows for precise control of indoor climate conditions. This means that the system can adjust its output according to the actual cooling or heating demand of the space, resulting in enhanced comfort and reduced energy waste. The inverter technology also contributes to quieter operation, allowing for a more pleasant indoor environment.

Another feature that sets the Carrier 040-420 apart is its smart controls. The unit can be integrated with Carrier’s Building Automation Systems, enabling remote monitoring and management. This allows facility managers to optimize energy use and immediately respond to any performance issues. Additionally, the unit is compatible with various control interfaces, making it easy for users to adjust settings or schedule operations according to the building's occupancy patterns.

The robust design of the Carrier 040-420 ensures longevity and durability, even in harsh environmental conditions. Its weatherproof casing protects the internal components, enhancing the unit's performance and reliability over time. Maintenance is simplified with accessible design features, allowing technicians to conduct service checks and repairs without extensive downtime.

Overall, the Carrier 040-420 stands out as a modern HVAC solution that combines energy efficiency, advanced technologies, and user-friendly features. Its commitment to performance and sustainability makes it an ideal choice for businesses looking to enhance comfort while being mindful of their energy consumption. With its blend of innovation and reliability, the Carrier 040-420 continues to be a preferred option in the commercial HVAC market.
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