Carrier 50MP62L-10R, MPE62L-10R, 48MPD specifications Keypad And Display Module Hsio

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.

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