Watlow Series 920 Microprocessor-Based Ramping Control - Manual (Page 41)

Table 8 -
SYSTEM Prompts and Description. Make photocopies, original clean:
CLR ALARM Displays the current alarm. 1-2
RETURN Press the ENTER key to return to
SYSTEM prompt
Press the MODE key to return to the
SP prompt.
.:.:.:.:. g:“..:“.’
. . . . :,:.:.:.: : : ., . . . ,.
h¥ . . . .: :: .: .
:.. _1.:.,.:.. . . . . . . . . . . .,.:...:: ..,.. . .,.;.y..
RETURN From any RETURN, you can go back to SYSTEM prompt.
One of three main level operating menus. From the SYSTEM menu, you can generate a non-
ramp set point (fixed), manipulate Events 1 and 2 ON or OFF, clear system errors, and clear
latching alarms. .
Represents the current set point.
Range: RAL and RAH Default: 73°F
This auxiliary output can be an alarm or event. Events may be turned ON or OFF in the
HOLD mode. EV1 will only appear when AUX1 = EV, under the SPCLFUNC menu.
Range: OFF or ON Default: OFF
This auxiliary output can be an alarm or event. Events may be turned ON or OFF in the
HOLD mode. EV2 will only appear when AUX2 = EV, under the SPCLFUNC menu.
Range: OFF
or ON Default: OFF
ER1 is considered a fatal error; your system will shut down. When the Serles 920 shuts down,
all outputs are turned off, and your program stops running. When an error occurs, ER1 00XX
alternately flashes with the SYSTEM parameter. When in either the RUN or HOLD mode,
press the ENTER key to stop ER1 from flashing for 5 minutes. This will not clear the error
condition. To clear an error, ENTER the SYSTEM mode, and scroll to the ER1 parameter.
Press ENTER; this clears the error unless it is a re-occuring error and has not been resolved.
Range: 0 - 50
ER2 is considered non-fatal. if you are in the RUN mode, your program continues running
unless it is a program error. ER2 00XX appears, and flashes alternately along with the
parameter you are presently on. When in either the RUN or HOLD mode, pressing the
ENTER key steps ER2 from flashing for 5 minutes. This will not clear the error condition.
Clear an ER2 by pressing the ENTER key while in the RUN mode, or return to the ER2
parameter under the SYSTEM mode. Press ENTER. If the error persists, refer to the Error
Code
list at the end of the manual to clear.
Range: 0 - 50
Alarms 1 and 2 are considered non-fatal. If you are in the RUN mode, your program will
continue to run. ALMX XX appears and flashes alternately with the parameter you are
presently on. When in either the RUN or HOLD mode, press the ENTER key to stop ER1
from flashing for 5 minutes. This will not clear the alarm condition. ENTER the CLR ALARM
parameter to clear a latching alarm. A non-latching alarm clears itself once it fails within the
alarm limits.
Range: 1 - 2
How To Program the Series 920, Chapter 6 WATLOW Series 920 User’s Manual
41