Watlow Series 920 Microprocessor-Based Ramping Control - Manual (Page 6)

Figure l-
Series 920 Input
output Overview
6
Selectab
RTD, T/C
Process
and
Chapter 1
Starting out with the
Watlow Series 920:
A Microprocessor-Based Control
Dual PID
or ON/OFF
outputs
or
Two Auxiliary Outputs
RS-422A or RS-423A (RS-232C Compatible)
Optional Computer Interface
General Description
F F
Congratulations, you’re about to become a fully-qualified user of the Watlow
Series 920! This versatile microprocessor-based ramping control is powerful, yet
simple to learn. A ramp progresses from one set point to another set point over a
period of time. In this chapter of the user’s manual, you’ll get an overview of the
920 and its operation.
Figure 1 is a simplified view of the Series 920’s capabilities. It is a dual output,
microprocessor-based, 1/4 DIN-sized ramping temperature control. The 920
accepts a single, front panel-selectable input. This includes Type
J, K, T, R, S,
or B thermocouple input, a 1° or 0.1° RTD input, or one of two process inputs. It
has a full control temperature range, offset calibration, and a front panel lock-out
feature.
WATLOW Series 920
User’s Manual Starting Out, Chapter 1