PM2002DP(2000) Просмотр технического описания (PDF) - South African Micro Electronic Systems

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PM2002DP
(Rev.:2000)

Energy Meter Evaluation Module

South African Micro Electronic Systems 

PM2002DP

sames

MODULE SETUP

The PM2002DP module is setup for use with the SA2002D integrated circuit. Resistor values used on the module are calculated for

rated conditions of 80A/220V.

Vdd

P4

Vss

Vdd

J11

P5

Vss

Vdd

J12

P6

Vss

Vdd

J13

P7

Vss

J14 P8

Vdd

P9

Vss

J15 P10

J3

IIN

IIP

Vref

R2

R1

R0

FAST

Vdd

CNF

NC

AGND

IVP

DIRI

DIRO

SA2002D NC

MON

Vss

LED

MOP

NC

P18

P17

P16

P15

P14

P13

P12

P11

J4

Vdd

J2

Vss

J1

JP3 Vss

1

2

J6

654321.1

Figure 2: Jumper schematic, digital IO’s

Name

Function Description

J1

J2

J3 and J4

J1 is used to select the energy direction ( DIRI pin). The three options available are:

P18 connected to Vdd - Negative energy measurement

P18 connected to Vss - Positive energy measurement

P18 connected to J2 (P17) - Bi-directional energy measurement

P18 should not be left floating and must be connected to one of the options described above.

J2 is only used to select bi-directional energy measurement when connected to P18

These are test points placed next to the digital pins of the SA2002E

J5

Not fitted This is the current sense input ground. If a current transformer is used for current sensing the two

pins of J5 must be connected.

J6

Connects the impulse to VSS. If a stepper motor is connected to JP3 then J6 should be left open.

J7

J8

J9

J11, J12

and J13

J14

J15

Analog ground test point (see figure 1)

Positive supply test point (Vdd) (see figure 1)

Negative supply test point (Vss) (see figure 1)

Used to select the R2, R1 and R0 pins of the SA2002D for the various rated conditions. Refer to table 1 for the

possible settings

Used to select fast calibration mode. Connecting P7 to Vdd selects fast calibration mode. For normal operation

P7 must be connected to Vss

Used to select between normal and configure / test modes. For normal operation connect P9 to Vss.

J16

Used to select between 220V and 110V mains systems (See figure 3). Leave open for 220V mains.

Table 3: Jumper settings for various device options

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