DayTronic 3770, Instruction Manual

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Model 3770
DC STRAIN GAGE PANEL METER
2
C
O N N E C T I O N S
The Model 3770 I/O CONNECTIONS are via removable screw terminals which will accept wire sizes from
AWG 12 to 26. NOTE: The recommended transducer cabling would be eight wire, twisted pair, individually
shielded - wired as indicated (Fig. 6) Sense lines must be connected at the transducer (as recommended) or
at the 3770 screw terminals - as a minimum. Table 1 denotes screw terminal assignments
Rear Panel Connections
R CAL + SHUNT HOLD
TARE
TARE ENABLE
EXCITATION EXCITATION
SENSE
SENSE
SIGNAL
SIGNAL
CAL SENSE SHIELD
VDC COM
V OUT SEL
V OUT FAST
4-20 mA COM 4-20 mA OUT
+ _
_ _
+ +
SHUNT
N/C N/C
LOGIC COM
R CAL -
Table 1
Connector Screw Terminal
Number Terminal Label Function
J1 1 N/C No connection
J1 2 N/C No connection
J1 3 HOLD Input Analog Hold command
J1 4 TARE Input Analog TARE command
J1 5 TARE ENABLE External TARE enable input
J1 6 LOGIC COM Logic Common
J1 7 R CAL + Remote Positive SHUNT Command
J1 8 R CAL - Remote Negative SHUNT Command
J1 9 SHUNT External Shunt Resistor Connection
J1 10 SHUNT External Shunt Resistor Connection
J2 1 + EXCITATION + Excitation Power
J2 2 - EXCITATION - Excitation Power
J2 3 + SENSE + Sense excitation control
J2 4 - SENSE - Sense excitation control
J2 5 + SIGNAL + Signal Input from sensor
J2 6 - SIGNAL - Signal Input from sensor
J2 7 CAL SENSE Calibration Sense for Shunt
J2 8 SHIELD Case Shield for cable termination
J3 1 VDC COM - Signal Output Voltage Common
J3 2 V OUT SEL + Signal Output Voltage – Filter Select
J3 3 V OUT FAST + Signal Output Voltage – 5 kHz Filter
J3 4 4-20 mA COM Current Output Common
J3 5 4-20 mA OUT Current Output Signal
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