Instruction Manual

Instruction Manual
D102748X012
Installation
October 2014
28
Commissioning the Digital Level Controller for use with the HART Tri‐Loop
To prepare the digital level controller for use with a 333 HART Tri‐Loop, you must configure the digital level controller
to burst mode, and select the dynamic variables to burst. In burst mode, the digital level controller provides digital
information to the HART Tri‐Loop HART‐to‐Analog Signal Converter. The HART Tri‐Loop converts the digital
information to a 4‐20 mA analog signal. The HART Tri‐Loop divides the signal into separate 4‐20 mA loops for the
primary (PV), secondary (SV), tertiary (TV), and quaternary (QV) variables. Depending upon the burst option selected,
the digital level controller will burst the variables as shown in table 2‐1.
The DLC3010 status words are available in the HART Burst messages. However, the Tri‐Loop cannot be configured to
monitor them directly.
To commission a DLC3010 digital level controller for use with a HART Tri‐Loop, perform the following procedure.
Table 2‐1. Burst Variables Sent by the FIELDVUE DLC3010
Burst Option Variable Variable Burst
(1)
Burst Command
Read PV Primary Process variable (EU) 1
Read PV mA and % Range
Primary Process variable (mA)
2
Secondary Percent range (%)
Read Dynamic Vars
Primary Process variable (EU)
3
Secondary Electronics temperature (EU)
Tertiary Process temperature (EU)
Quaternary Not used
1. EU—engineering units; mA—current in milliamperes; %—percent
Set the Burst Operation
Field Communicator Configure > Communications > Burst Option (2-4-2)
1. Access Burst Option.
2. Select the desired burst option and press ENTER
3. Access Burst Mode and select On to enable burst mode. Press ENTER.
4. Select SEND to download the new configuration information to the digital level controller.