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Ch. 1 - starting out, Series 1500 input and output overview, Starting out with the series 1500 -chapter 1 – Watlow Series 1500 User Manual

Page 4: General description, Starting out, Read me first

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Starting Out

4

WATLOW Series 1500 User's Manual

Starting Out, Chapter 1

Chapter 1

Starting Out with the Watlow Series 1500

"Read Me First."

Congratulations, you're about to become a fully-qualified user of the Watlow Series
1500! It is a versatile microprocessor-based control; powerful, yet simple to learn. In
this chapter of the user's manual, you'll get an overview of the 1500 and its software.
You'll "light" the displays and get a feel for moving through the control functions.

Figure 1 is a simplified view of the 1500's capabilities. The control has dual inputs,
one per channel, and dual control outputs for each channel. There is a choice of
auxiliary (event) or alarm outputs, an event input and remote hold input. An "Event
Output" in the Series 1500 is an ON/OFF solid state relay or solid state switch output
for activating periphered equipment or processes. Models with optional communica-
tions may be connected to a computer via a serial communications interface.

The Series 1500 will handle 51 separate control steps. Each step duration is variable
from one second to 24 hours, 59 minutes, 59 seconds. The 1500 is a "profiling"
control because it will control up to 51 consecutive steps with a single program; the
resulting graph of all the steps makes a program "profile." The 1500 is a "ramping"

Figure 1 -
Series 1500
Input and Output
Overview

RS-422A/RS-423A (RS-232C)
Serial Communications Interface
See Page 62

Heat/Cool
See Page 36

Humidify/
De-Humidify or
Heat/Cool
See Page 36

Dual Control
Outputs/Channel
See Pages 6 & 82

Dual Inputs
See Pages 6, 35 & 82

TEMP and %RH or
TEMP
See Pages 6, 8 & 35

Event Input
See Pages 36 & 51

Remote Hold Input
See Pages 36 & 51

8 Auxiliary (Event)
Outputs, 4/Channel
See Pages 36 & 51

or

3 Auxiliary (Event)
Outputs/Channel and 1
Alarm Output/Channel
See Pages 36, 49 & 51