DayTronic 3770 Manual de instruções - Página 6

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Model 3770

O N N E C T I O N S

J1 – Shunt Command Connections. Connection is used to activate the positive or negative

Shunt calibration command from the rear panel. When the + or – R CAL terminal is

connected to LOGIC COM via a switch or relay, the installed Shunt resistor will be

connected across + Signal and + Sense or – Sense depending on the Shunt polarity chosen

and the CAL SENSE connection. CAL SENSE line is normally connected to + Signal for

proper signal activation.

Fig. 4

J2 - HOLD & TARE Connections.

or "TARE" features of the unit are enabled and are controlled by an external switch, PLC or

relay. The LOGIC COM signal is used to activate the analog HOLD or Analog TARE

(offset) to the meter's display and analog output signals present on J3.

Fig. 5

J1 Logic Controls

HOLD IN

TARE IN

TARE ENABLE

LOGIC COMMON

N/O

Switch

SHUNT Command

Connections

Connection is used when external control of the "HOLD"

Push Button, Contact Relay,

Switch.....

Activates Analog HOLD when connected to LOGIC COMMON

Activates Analog TARE when connected to LOGIC COMMON

Enables remote TARE and disables front panel TARE when connected to LOGIC COMMON

Connection to enable rear panel features

DC STRAIN GAGE PANEL METER

J1 - SHUNT Activation

Connections

Connecting LOG COMMON to the R CAL + or

R CAL - terminal will activate the installed

shunt resistor (internal or external) across the

connected four arm bridge sensor for

simulated calibration & verification check of

the sensor's electrical characteristics.

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