sames

PM2102DPD

5/16

http://www.sames.co.za

Table 3: DF_LED and DF_MO factors for SA2102D

Figure 6: Jumper positions

For selection as indicated: Pulse stability enabled, fast mode with power supply enabled

R2

0

0

0

0

1

1

1

R1

0

0

1

1

0

0

1

R0

0

1

0

1

0

1

0

DF_LED

322

322

322

322

536

214

214

DF_MO

64

32

16

8

64

16

8

PRELIMINARY

Analog Ground (GND)

The GND pin of the SA2102D is connected to the live phase,

which is halfway between V and V .

The PM2102DPD evaluation module comes with several

jumper selections, which allows the user to evaluate all of the

DD

SS

Selection of R1, R2 and R0 for different rated conditions

The following equations and table state the basic pulse

constants and motor constants obtainable with the

PM2102DPD meter.

The Output pulse equation is:

LED p/kWh = 1160p/sec x (1/DF_LED) x [3600/((Vnom x Imax)

/ 1000)]

The equation for the motor constant is:

MOTOR p/kWh = LED p/kWh / DF_MO

where dividing factors

and

are described in

Table 3 (R2, R1 and R0 are input pins for SA2102D).

DF_LED

DF_MO

In the above table a “1” implies that the selector is connected

to VDD.

SA2102D's functionality. Tables 1 and 2 describe the various

jumper options. These tables should be used in conjunction

with figure 6, which will make it easier to locate the appropriate

jumper.