Watlow Series 920 Microprocessor-Based Ramping Control Manual do Utilizador descarregar pdf (Página 41)

Table 8

SYSTEM Prompts and

Description.

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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

prompt.

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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

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

ER2

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

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 -

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:

- 2

How To

Program

the Series 920, Chapter 6

WATLOW

Series 920 User’s Manual

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