sames

PM2102DPD

4/16

http://www.sames.co.za

PRELIMINARY

Table 2: Jumper options

Name

Connecting to VSS will allow only negative energy to be measured.

Option

Description

J1

VSS (-)

Connecting to VDD will allow only positive energy to be measured.

VDD (+)

Connecting to jumper J2 will allow bi-directional energy measurement.

J2

Connected to J1 allows for bi-directional energy measurement.

J2

J1

These are digital test pins placed immediately next to the device for convenient testing.

J3

N/A

These are digital test pins placed immediately next to the device for convenient testing.

J4

N/A

This jumper must be closed when measurement is done via a CT. The jumper connects one side

of the current sense resistor to ground.

J5

Closed

Leave this jumper open when a shunt is used.

Open

Closing this jumper enables the onboard mechanical counter.

J6

Closed

Leave unconnected if the onboard mechanical counter is not to be used, or if a stepper motor

counter is used.

Open

This jumper connects the VDD rail of the onboard power supply to the rest of the circuit. Leave

open if an external source is to be used.

J7

(Used in

conjunction

with J8)

Open

This jumper must be closed to connect the onboard power supply VDD rail to the circuit.

Closed

This jumper connects the VSS rail of the onboard power supply to the rest of the circuit. Leave

open if an external source is to be used.

J8

(Used in

conjunction

with J7)

Open

This jumper must be closed to connect the onboard power supply VDD rail to the circuit.

Closed

Used to select the required rated conditions. See table 3 and figure 6 for further detail on the

various settings possible.

J11

VDD (+)

VSS

Used to select the required rated conditions. See table 3 and figure 6 for further detail on the

various settings possible.

J12

VDD (+)

VSS

Used to select the required rated conditions. See table 3 and figure 6 for further detail on the

various settings possible.

J13

VDD (+)

VSS

Used to select between fast and normal pulse output mode. When connected to VSS the normal pulse

output mode is selected.

J14

VSS

Connection to VDD selects the fast output pulse mode.

VDD (+)

This selects the IC manufacturers test mode for normal metering. Connect to VSS.

J15

VSS

This jumper selects between 220V and 110V supply networks. Leaving this jumper open (default)

selects a 220V network.

J16

Open

Closing this jumper selects a 110V network. See power supply design when opting for the

110V setting.

Closed

This is a test pin connected to the VDD power supply. If opting for an external supply, the VDD rail

can be connected here after J7 is removed.

J17

N/A

Ground connection pin. Use this pin to connect the external supply mid-rail point.

J18

N/A

This is a test pin connected to the VSS power supply. If opting for an external supply, the VSS rail

can be connected here after J8 is removed.

J19

N/A

When fast mode is selected this input can be used to enable or disable the internal pulse stability

circuitry for the LED output pulses. Connecting to VSS disables this circuitry.

SO

VSS (-)

Connecting to VDD enables this circuitry.

VDD (+)