UM0575

Getting started

13/20

START winding conduction information.

To achieve this level detection, R4 has to be chosen according to the value of R3, using the

following equation:

Equation 3

of the base-emitter junction of the Q1 transistor.

With R3 remaining at 510 k

0.6 V respectively, then R4 equals:

Equation 4

3.2

Connections

Before beginning any test, please take note of the following warnings:

1.

The board has to be used by electrically-skilled technicians or engineers because the

board has to be plugged into the mains and because no insulation is used between the

mains voltage and the accessible conductive parts.

2.

There is no insulation varnish on solders. Care should be taken when performing

measurements (for example, voltage probes have to be connected only when the line

and the power supply voltages are removed).

The e-STARTER has to be connected to a PTC and a compressor as shown in Figure 12,

according to the instructions given on the topside silk screen. The RUN capacitor (CRUN) is

optional and has to be used according to the compressor type. A start capacitor could also

be placed in series between the PTC and the e-STARTER.

1

Q

_

BE

1

DZ

OFF

_

PTC

1

DZ

V

V

V

V

3

R

4

R

−

−

⋅

=

Ω

≅

⋅

=

−

−

⋅

⋅

=

k

30

10

6

.

32

6

.

0

15

250

15

10

510

4

R

3

3

Figure 12.

e-STARTER connections

Vac

Thermostat

Klixon

PTC

Compressor

e-STARTER

RUN

C

RUN

Vac

Thermostat

Klixon

PTC

Compressor

RUN

START

AM00908v1