Quick Start Guide

Quick Start Guide
D103214X012
DLC3010 Digital Level Controller
September 2014
14
Figure 9. Connecting a Field Communicator to the Digital Level Controller Loop
230   R
L
 1100 
POWER
SUPPLY
Signal loop may be grounded at
any point or left ungrounded.
A HART‐based communicator
may be connected at any
termination point in the signal
loop. Signal loop must have
between 250 and 1100 ohms
load for communication.
Reference meter
for calibration
or monitoring
operation. May
be a voltmeter
across 250 ohm
resistor or a
current meter.
E0363
1
NOTE:
1 THIS REPRESENTS THE TOTAL SERIES LOOP RESISTANCE.
+
+
+
+
−
−
−
−
Figure 10. Power Supply Requirements and Load Resistance
Maximum Load = 43.5 X (Available Supply Voltage - 12.0)
12 30
LIFT‐OFF SUPPLY VOLTAGE (VDC)
Load (Ohms)
0
10 20 2515
783
250
Operating
Region
E0284