UM0277 datasheet(29/32 Pages) STMICROELECTRONICS

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UM0277

PC interface parameters description

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Appendix F

PC interface parameters description

Table 6.

PC interface parameters description

Parameter

Software type

Unit

Initial

setting

Allowed range

Setting

step

Temperature Hysteresis

Input / Output

°C

0.5 to 10°C

0.1

Thermostat order

Input / Output

N/A

1 to 3

Evaporator temperature order 1

Input / Output

°C

-5

-50 to 10°C

0.5

Evaporator temperature order 2

Input / Output

-12

-50 to 10°C

0.5

Evaporator temperature order 3

Input / Output

-20

-50 to 10°C

0.5

Forced Defrost Control

Input

N/A

0 (OFF) or 1 (ON)

Forced Compressor Control

Input

N/A

0 (OFF) or 1 (ON)

Forced Bulb Control

Input

N/A

0 (OFF) or 1 (ON)

Forced Bulb Control

Input

N/A

0 (OFF) or 1 (ON)

Compressor phase shift (T1)

Input / Output

0.5

0.1 to 4

0.1

Gate current pulse width

(for compressor, T3)

Input / Output

0.1 to 4

0.1

ZVS delay

Input / Output

µs

5 to 255

Gate current pulse width

(for defrost resistor, T2)

Input / Output

0.1 to 4

0.1

Defrost Activation Delay

Input / Output

Hours &

Minutes

00:10’ to 24:00 (10’ to 24)

10’

Defrost duration

Input / Output

Minutes &

seconds

00:10 to 30:00 (10” to 30’)

10”

Compressor running period

Output

Hour &

Minutes

N/A

00:01 to 04:30 (1’ to 4h30’)

N/A

Compressor duty cycle

Output

N/A

0 to 100%

Light-bulb Status

Output

Green

LED for

N/A

Defrost Status

Output

Green

LED for

N/A

Compressor Status

Output

Green

LED for

N/A

Mains frequency

Output

N/A

50 or 60 Hz

Evaporator temperature

Output

°C

N/A

40 to -50°C

Evaporator temperature order

Output

°C

N/A

40 to -50°C

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