RMC70 Startup Guide
38
Delta Computer Systems, Inc.
12-pin Axis
Connector
+Analog In
Jumper for 4-20 mA
-Analog In
Cmn
+10Vdc Exciter
Case
Potentiometer
Wiper
12-pin Axis
Connector
+Analog Out
Power Supply
+24 VDC
Cmn
+Analog In
Jumper for 4-20 mA
-Analog In
Cmn
+10Vdc Exciter
Case
+Pwr
AA Module Potentiometer with Exciter Pin
Note:
When using a potentiometer, use the
Exciter
pin to increase the
accuracy of the analog to digital conversion.
AA Module 4-20 mA
To reduce electrical interference:
•
The connection
of
-Analog In
to
Cmn
should be
made as close as possible to the transducer.
•
Use individually shielded twisted-pair wire.
•
Connect cable shield to ground on one end only.
The
Jmpr
and
-In
pins are internally
connected via a 250
Ω
resistor.
To reduce noise, use individually
shielded twisted-pair wire.