Emerson DL8000 - Hardware; Housing; Revised February

DL8000 Preset Instruction Manual
Revised February-2016 Overview 1-3
Warning
Overfill protection is critically important to your site. If your site DOES
NOT have overfill protection hardware installed, DO NOT set the
Overrun Limit Quantity value (defined on the Alarm Setup tab of the
Preset Setup screen in the Batching program) to zero. Setting that field
to zero DISABLES overfill protection. Remote Automation Solutions is
not responsible for damage resulting from disabling this critical safety
feature.
Factory Default
Configuration
The DL8000 is factory-configured with a basic set of communication
and I/O modules to accommodate process I/O signals.
The default I/O module load—as well as any optional modules—is
determined during initial purchase. However, the I/O modules and
communications modules mix is field-reconfigurable, within the limits
of the DL8000’s central processing unit (CPU). The hardware
configuration determines the DL8000’s capacities for I/O signal
handling and the data logging/data communications.
Logical Functions
The flow measurement and logical functions listed below are available
in all hardware configurations of the DL8000. However, each unique
installation requires a specific complement of I/O modules, based on
the actual devices the DL8000 monitors and controls.
The DL8000 can simultaneously monitor and control operation of up to
three flow meters, up to three flow control valves, and deliver up to four
products. The minimum configuration consists of one flow meter
measuring one component (liquid product), one control valve, one pump
start, and one permissive input. Product deliveries and component
blending deliveries are selected by up to 30 configurable recipes (batch
delivery/blending control procedures). The actual implementation of the
various possible process operations are covered in detail in other
sections of this manual.
1.2 Hardware
The DL8000 has two primary physical components: the external
housing and the internal electronics. Refer to Chapter 2, Installation
and Use, for details on installation.
1.2.1 Housing
The DL8000 uses either of two external housings:
 A cast aluminum casing with stainless steel front cover bolts. It is
flame-proof (in accordance with Class I, Zone 1, Group IIB) and
weatherproof (in accordance with IP66).
 A 14-gauge stainless steel box with 12-gauge stainless steel
mounting flanges, CSA-rated as a Type 4 enclosure. The door is
made of 0.090 inch thick aluminum secured to the box with a
stainless steel piano hinge and two stainless steel spring latches.