Athena PIM Instrukcje Operacyjne Pobierz pdf (Strona 8)

6- When any of the thermocouple (TC) faults are detected,

output power will be cut-off automatically and the

temperature display will be blanked out. The leftmost

digit will show “ ” for (TC open), “ ” for (TC reverse)

or “ ”for No Heat and flash twice per second.

B.Automatic Operation with CompuStep

system

When starting from cold, it is recommended that the

CompuStep system be used, as this will serve to lengthen

heater life considerably.

1- Position the mode select switch to CompuStep mode

(“ ”).

2- Set the desired temperature on the setpoint switch.

3- Turn on the AC power.

4- After reset delay, the measured temperature will be

displayed. If temperature is less than 200 degrees F

(93°C) the controller will enter the CompuStep mode.

This is indicated by the step symbol “ ” on the leftmost

digit. During this mode, the controller gradually

increases power to load in small steps and limits the

load temperature to 256 degrees F (124°C). After 5

minutes, the controller will exit from CompuStep mode

and automatically go to setpoint. Any thermocouple

faults detected during the 5 minute interval will cause

the CompuStep mode to end prematurely. A standby

command from a SAM module will also terminate

CompuStep mode. When CompuStep ends, the

controller will operate as described in the Automatic

Closed-Loop Operation section. If temperature is above

200 degrees F (93°C), controller will bypass CompuStep

and go directly to setpoint.

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Athena PIM Instrukcje Operacyjne Strona 8