User`s guide

Series D8 User’s Guide Chapter 1: System Overview
Doc. 0600-3120-2000 Watlow Anafaze 7
The D8 has the following features:
• Keypad and two-line, 16-character display.
• Screw terminals for the power and analog inputs.
• Micro-style connector for DeviceNet.
• Input power of 12 to 24 Vdc at 1 Amp.
• 50-pin SCSI cable to connect the digital inputs and out-
puts to the 50-terminal block (TB50). The D8 is available
with an 18-terminal block (TB18) in place of the SCSI
connector, as shown in Figure 1.3 on page 6.
• Nonvolatile flash memory for storage of firmware and
programmable logic.
• Battery-backed storage of operating parameters. If a
power loss occurs, the operating parameters are stored in
memory. The battery has a ten-year shelf life, and it is not
used when the controller is on.
• Microprocessor control of all calculations for input sig-
nal linearization, PID control, alarms, and communica-
tions.
Front Panel Description
The display and keypad provide an intelligent way to operate
the controller. The display has 16 alphanumeric or graphic
characters per line. The eight-key keypad allows you to
change the operating parameters, controller functions and dis-
plays.
The displays show process variables, set points and output
levels for each loop. A single-loop display, scanning display
and alarm display offer a real-time view of process conditions.
For useful tips, help and menu information, press
i from any
screen.
Figure 1.4 D8 Front Panel