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sames

sames

SA2007M

http://www.sames.co.za

Figure 2: Pin connections: Package: DIP-20, SOIC-20

Part Number

SA2007MPA

SA2007MSA

Package

DIP-20

SOIC-20

ORDERING INFORMATION

PIN DESCRIPTION

Analog Ground. The voltage to this pin should be mid-way between V

and V .

DD

SS

Positive supply voltage. The voltage to this pin is typically +2.5V if a shunt resistor is used for

current sensing or in the case of a current transformer a +5V supply can be applied.

Description

PIN

20

8

Negative supply voltage. The voltage to this pin is typically -2.5V if a shunt resistor is used for

current sensing or in the case of a current transformer a 0V supply can be applied.

14

The current into the A/D converter should be set at 14µA

at nominal mains voltage.

RMS

The voltage sense input saturates at an input current of ±25µA peak.

19

Inputs for current sensor - channel 1 and channel 2. The shunt resistor voltage from each

channel is converted to a current of 16µA

at rated conditions. The current sense input

RMS

saturates at an input current of ±25µA peak.

1, 2,

3, 4

This pin provides the connection for the reference current setting resistor. A 24kW resistor

connected to V

sets the optimum operating condition.

SS

5

Motor pulse rate select inputs. Described under Input Signals.

6, 7

Motor pulse outputs. These outputs can be used to drive an impulse counter or stepper motor

directly.

9, 12

Calibration LED output. Refer to section Led Output (LED) for the pulse rate output options.

13

Rated condition select input. Described under Input Signals.

15

Current channel select output. This output indicates which channel is been used for kWh

metering.

16

Earth loop tamper output. This output indicates an earth loop tamper condition.

17

Direction output. This output indicates the energy flow direction.

18

No Connection.

11

Test input. Connect to V

for normal operation.

SS

10

DR-01595

1

IIN1

GND

SEL1

IIP1

IVP

RATED

IIN2

DIRO

VSS

IIP2

VREF

MP1

MP0

VDD

ELT

LED

MOP

NC

TCLK

MON

2

3

4

5

6

15

14

13

12

11

10

9

8

7

16

17

18

19

20

GND

V

DD

Designation

V

SS

IVP

IIN1, IIP1

IIN2, IIP2

VREF

MP0, MP1

MON, MOP

LED

RATED

SEL1

ELT

DIRO

NC

TCLK

PRELIMINARY