Keypad and Display Module Hsio, Stby YES

Carrier 50MP62L-10R, MPE62L-10R, 48MPD specifications Keypad and Display Module Hsio, Stby YES

KEYPAD AND DISPLAY MODULE (HSIO)

IMPORTANT: The HSIO (human sensor input/output) keypad and display module is required for initial start-up of these units. All units are shipped in standby mode, and the HSIO must be used to change the unit to run mode. Once the unit is in run mode, the HSIO is not required for normal operation.

The keypad and display module HSIO (or local interface device, LID, factory-installed and located in the main control box) provides unit function information at the unit. The module consists of a keypad with 6 function keys, 5 operative keys, 10 numeric keys (0 through 9), and an alphanumeric 8-character liquid crystal display (LCD). Key usage is explained in Table 23. Each function has one or more subfunctions as shown in Table 29.

The HSIO keypad and display module is installed through connection of the power and communication plugs and can be easily moved from one unit to another. Because of this ¯exibility, one HSIO can be used for several units.

Unit operation is controlled by the status of the RUN/ STANDBY mode on the HSIO. To access the mode, press

on the HSIO keypad, and then use the

key. The HSIO will display either STBY YES or STBY NO.

To enable the unit, press CLEAR or and press ENTER while

at the STBY YES display. To disable the unit, press ENTER while at the STBY NO display. Clearing an alarm that has stopped unit operation is accomplished by entering

the

STBY

YES

mode.

IMPORTANT: Use the STBY YES mode when ser- vicing the unit or running the Quick Test feature.

IMPORTANT: If unit is also equipped with REMOTE START function, place LOCAL/REMOTE switch in LOCAL (Off) position when servicing or running Quick Test feature.

Default Set Points/Changing Set Points Ð Re- fer to Table 24 for factory default con®guration and set point values.

Record any changes made during start-up and leave with unit for future reference.

These values may be changed from the HSIO keypad at any time. If changing values via Service Tool or CCN Build- ing Supervisor, the unit must be in RUN mode (STBY NO), which is done through HSIO input or a Remote Start input.

After changing the values in subfunction , the Data Reset function must be enabled.

Motor Protection Ð Manual reset, calibrated trip, mag- netic circuit breakers are provided for each compressor, sup- ply fan motor, and optional exhaust fan motor.

Outdoor fan motor circuits are also protected by circuit breakers.

Refer to the Service section more information on serv- icing motors.

Variable Frequency Drive (VFD) Ð An optional VFD can be factory-installed and is used to modulate supply fan air¯ow to maintain duct static pressure on VAV applications.

A second VFD can be used to modulate exhaust fan air¯ow to maintain building pressure on units equipped with modu- lating power exhaust option.

The supply fan VFD is located in the auxiliary control compartment, on the left hand side of the unit, at the end of the supply fan section.

The modulating power exhaust VFD is located in the ex- haust fan compartment, on the right hand side of the unit, at the return air end.

Control input to the supply fan VFD is provided by a 4 to 20 mA signal from the PSIO1 (Channel 16).

Control input to the exhaust fan VFD is provided by a

4 to 20 mA signal from the PSIO1 (Channel 15).

Set point control for the VFD is done through the HSIO

or other network devices (subfunction ). Refer to the

Controls and Troubleshooting manual for con®guration in- structions and sequence of operation.

The VFD has been programmed at the factory for 48/ 50MP applications. No further adjustments should be nec- essary at start-up.

A separate technical and service manual for the factory installed VFD is supplied with each unit. Refer to the VFD manual for more information on accessing and diagnosing the VFD controls.

DISPLAY AND KEYPAD Ð All functions of the VFD are accessed using the Digital Operator. See Fig. 49. The Digital Operator has a 4-digit LED display. By pressing the

DSPL key on the Digital Operator while the drive is stopped,

the user can step to each of the 16 functions and displays. See Table 30.

MPE62L-10R, 50MP62L-10R, 48MPD specifications

The Carrier 48MPD, 50MP62L-10R, and MPE62L-10R are advanced rooftop packaged units designed for a variety of commercial HVAC applications. These systems offer a compelling blend of energy efficiency, versatility, and high performance, making them ideal choices for businesses looking to enhance their indoor climate control.

One of the standout features of the Carrier 48MPD series is its high efficiency rating, which significantly reduces operational costs while minimizing environmental impact. The unit utilizes advanced scroll compressors that provide reliable and efficient cooling capabilities, ensuring optimal temperature regulation regardless of outdoor conditions. This innovative design also contributes to quieter operation, enhancing indoor comfort without disruptive noise levels.

The Carrier 50MP62L-10R model boasts superior cooling and heating capabilities, equipped with a multi-speed fan system that allows for tailored airflow to suit specific project requirements. This model's economizer feature is pivotal for harnessing outside air to offset mechanical cooling, leading to further energy savings, particularly in moderate weather conditions. Additionally, the unit's dual-fuel capability enhances its operational flexibility, allowing it to switch between electric and gas heating sources depending on efficiency needs.

In terms of control technologies, the MPE62L-10R is equipped with Carrier's advanced Smart Evaporator Control, which ensures precise humidity management while optimizing energy consumption. This model also integrates seamlessly with building automation systems, enabling remote monitoring and adjustments for greater operational oversight and efficiency. The intuitive user interface simplifies system programming and operation, making it accessible even for those without extensive technical backgrounds.

Another important characteristic of these units is their robust construction, designed to withstand challenging weather conditions and ensure longevity. The use of high-quality materials and components means lower maintenance costs over time.

Overall, the Carrier 48MPD, 50MP62L-10R, and MPE62L-10R represent a well-engineered suite of HVAC solutions that excel in efficiency, adaptability, and user-friendliness, establishing themselves as leading choices for commercial indoor climate management. With their blend of innovative technology and solid performance, these systems are well-suited to meet the diverse needs of modern commercial spaces.