Sample application, Sample application: environmental testing, Overview – Watlow Series F4S/D User Manual

Page 6: Run the profile, Wire

Sample Application: Environmental Testing

with a Dual Channel F4 Using Multiple Inputs and Outputs

Figure 1.2 — Sample Application 1: Series F4 Dual Channel Using Multiple Inputs and Outputs.

F 4

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Overview

Andy, an engineer with the Ajax

Testing Company, is running tempera-

ture and humidity tests on navigation-

al equipment. He wants to be able to

control temperature and humidity in

the environmental chamber, and moni-

tor the temperature of the equipment

itself. With the Watlow Series F4 ramp-

ing controller, he can:

•program the test as a ramping profile

and control it remotely;

•use boost heat and cool to maintain

precise temperatures;

•record the equipment temperature on

a chart recorder;

•notify the operator with a bell if pro-

cess temperatures do not follow the

profile;

•pause the profile if someone opens the

chamber door during the test;

•set up communications with a PC

later.

5. Run the Profile

Andy pressed the Profile Key and

selected the test profile. He monitored

the progress of the test on the display

and the equipment temperature on the

chart recorder.

See the Operations Chapter.

1. Wire

Following diagrams in the user manual, Andy

connected the analog input terminals to temper-

ature and humidity sensors, channel 1 output

terminals to the heater and cooler, channel 2

outputs to the humidifier/dehumidifier, alarm

output 1 to an alarm bell and retransmit output

1 to a chart recorder to track the equipment

temperature. Digital output 6 and 7 controlled

the boost heater and cooler, and 8 controlled the

mechanical refrigeration compressor.

See the Wiring Chapter.

1 . 2

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I n t r o d u c t i o n

Wa t l o w S e r i e s F 4 S / D