Watlow Series 1500 User Manual download pdf (Page 47)

Technical Reference

WATLOW Series 1500 User's Manual 47

Programming, Chapter 4

This section will

also vary accord-

ing to the flow

chart depending

upon DIP Switch

#4 (single or dual

PID).

Guarded Access

minutes with the UP/DOWN keys. Press ENTER. The prompt SC will appear.

Select correct seconds with the UP/DOWN keys. Press ENTER; GA will appear.

GA (Guarded Access) Programming

The Guarded Access parameters control the process limits. The three GA parame-

ter loops are restricted to operators by special codes. The Guarded Access codes

prevent inexperienced or unauthorized operators from changing the parameters.

The GA prompts appear in the Guarded Access Charts (p. 49 or 50) and in the CHG

PARA flow diagram. You may alter any one of them by changing the DATA display

with the UP and DOWN keys. Then press ENTER. Guarded Access parameters will

not self prompt. To proceed to the next prompt, press FCTN.

• GA (Guarded Access) Select a GA code with the UP and DOWN keys. Then

press ENTER. The first prompt in the loop appears.

GA Code = 0000. Prompts appear for Ch-1, then repeat for Ch-2. These

parameters are more fully explained in the "Alarm" reference section, p. 46.

Ranges for your particular unit are in the charts on pages 49 or 50.

• UP (Upper Process Type Alarm) Select an alarm point of this type for Ch-1.

Press ENTER; press FCTN. If you do not want this alarm set to highest value.

• LP (Lower Process Type Alarm) Select an alarm point of this type for Ch-1.

Press ENTER; press FCTN. If you do not want this alarm set to lowest value.

• Ud (Upper Deviation Type Alarm) Select an alarm point of this type for Ch-1.

Press ENTER; press FCTN. If you do not want this alarm set to highest value.

• Ld (Lower Deviation Type Alarm) Select an alarm point of this type for Ch-1.

Press ENTER; press FCTN. If you do not want this alarm set to lowest value.

• Sequence repeats for Channel 2 and then leaves the guarded area, returning to

real time.

GA Codes = 0001 and 0002. Prompts appear for Ch-1 with Code 0001, and then

repeat for Ch-2 with Code 0002. Except for CA, these parameters pertain

directly to tuning your control to the system. See the "Tuning" reference section

on p. 60. Ranges and default values are listed on pp. 49 or 50.

• Pb (Proportional Band) Select a proportional band value with the UP/DOWN

keys. Then press ENTER; press FCTN.

• RS (Reset) Select a reset value with the UP/DOWN keys. Then press ENTER;

press FCTN.

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Watlow Series 1500 User Manual Page 47

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