Setting Honeywell UDC2500 controllers used with Siemens pressure transmitter on Heatec vertical asphalt tanks
This document provides information for setting Honeywell controller DC2500-EE-1000-200-00000-00-0 (Figure 1) used to indicate levels in Heatec asphalt tanks. The controller is used on six sizes of Heatec vertical tanks equipped with Siemens Sitrans P, series DSIII pressure transmitter 7MF4033-1CY10-1NC6-Z-B21Y01 (fitted with remote seal 7MF4810-2QA02) (Figure 2).
The controller indicates levels of asphalt in the tank. Levels are shown in inches, measured from the bottom of the tank. The controller automatically activates a circuit to shut off pumps used to fill the tank when the tank reaches a preset "full" level. It also activates an alarm circuit when the tank is "full."
When the asphalt level reaches its low-level setting, the controller shuts off the valve that allows hot oil to heat the tank. The low-level setting prevents heating the asphalt when its low level is below the heating coils and avoids coking the coils.
Honeywell controllers purchased from Heatec are normally set at our factory and require no further setup. However, the controller can be set in the field using the information shown in Figure 3.
A Honeywell UDC Controller Manual is on a CD furnished with each controller. If you need instructions on how to use buttons on the controller to make settings, you will find them in this manual.
COORDINATION OF SETTINGS
Settings of the Honeywell controller should be coordinated with the settings on the Siemens pressure transmitter shown in Heatec Tec-Note 10-06-180, entitled Setting Siemens Pressure Transmitter used on Heatec vertical asphalt tanks. Failure to coordinate settings may result in erroneous level indications and improper shutoff control!
Figure 1. Honeywell Controller DC2500-EE-1000-200-00000-00-0. |
Figure 2. Siemens pressure transmitter |
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