Vsd Adaptive Capacity Control - York VSD 270 Operation Manual

Liquid-cooled optispeed compressor speed drive

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Operation manual (36 pages)

Operation manual (46 pages)

Table Of Contents

Table of Contents

and the OSCD logic board is faster. In the changes to the microboard the function of the Adaptive

Capacity Board was placed into the microboard, and the ACC board was longer needed in new

production. The new microboard is also compatible with the older designs microboards used in the

OptiView panel. The new OSCD logic also added this new communication port, but also retained all

of the functions required to still communicate with the ACC board.

OptiSpeed and optional harmonic filter logic control boards

Within the enclosure of the VSD model drive, the OSCD logic board and optional Harmonic Filter

logic board are interconnected by a 16-position ribbon cable. This cable provides power for the

Filter logic board and a method of communications between the two boards.

The OSCD Logic board performs numerous functions, control of the OSCD's cooling fans and

pumps, when to precharge the bus capacitors, and generates the PWM.

The OSCD Logic board also determines shutdown conditions by monitoring the three phases of

motor current, heatsink temperature, baseplate temperature, internal ambient temperature, and

the DC bus voltage.

The optional Harmonic Filter logic board determines when to precharge the harmonic filter power

unit, when to switch the transistors in the harmonic filter power unit, and collects data to determine

power calculations. This board also uses this data to determine shutdown conditions.

Microcomputer control panel VSD related keypad functions

Refer to 160.00-M4 for related keypad functions. Some of the displayed data in this form is different

from the 160.00-M1. Under the Options Key – the following changes will be displayed:

•

VSD PHASE A INVERTER HEATSINK TEMP = °F.

•

VSD PHASE B INVERTER HEATSINK TEMP = °F.

•

VSD PHASE C INVERTER HEATSINK TEMP = °F.

These three temperature values are replaced with:

VSD BASEPLATE TEMP = °F

•

For the low horsepower model drives. The high horsepower model drives will display three phases

of Baseplate temperature. When the Filter is present, the following data will change from:

•

FILTER HEATSINK TEMP = °F.

This temperature data will now be called:

•

FILTER BASEPLATE TEMP = °F.

The names for the above data were changed because the temperature sensor is now inside the

transistor module instead of the chill plate where the transistor modules are mounted. This new

sensor gives a better indication of true temperature of the power electronics.

OptiView control panel VSD functions

Refer to the specific OptiView™ Control Panel operations manual for detailed information. All of the

OSCD related information is contained under the Motor and Compressor Screens.