Apollo Intelligent Meter Series IMY Manual de usuario descargar pdf (Pagina 20)

MODULE #9 - SERVICE OPERATIONS

The indicator has been fully calibrated at the factory. If the unit appears to

be indicating incorrectly or inaccurately, refer to the troubleshooting section

before attempting this procedure.

When re-calibration is required (generally every 2 years), this procedure

should only be performed by qualified technicians using appropriate

equipment. Resistance source accuracies of 0.01% or better are required.

The procedure consists of applying accurate signal levels to the indicator in

a series of two steps. Allow a 30 minute warm-up period before starting this

procedure.

Note: Once the access code has been entered, there is no exiting the program

module without completing the calibration procedure.

ENTER ACCESS CODE

“Code 48” must be keyed-in prior to the calibration sequence to guard

against inadvertent entries. Access code numbers other than those listed in

this section should not be entered at this step. If any are entered, undefined or

unpredictable operation could result.

“CodE” < > “0” to “99”

If the code number for the previous step was not recognized, the indicator

returns to “Pro 0”, with no action taken. Otherwise, the calibration procedure

is started.

ENTER ZERO REFERENCE

Apply 0 ohms to input by shorting Terminals 6 and 7 as

shown in the drawing to the right. Allow to stabilize for 20

seconds before pressing “P”.

“StEP 1” (Press “P”)

APPLY PRECISION RESISTANCE

Connect a precision (0.01%) 5.11 KW resistor across

Terminals 6 and 7.

Allow to stabilize for 20 seconds before pressing “P”.

“StEP 2” (Press “P”)

Indicator calibration is complete. It is recommended that calibration be

checked by comparing the displayed temperature with a precision thermometer.

SERIAL HARDWARE (loop-back) DIAGNOSTICS

The internal serial communications hardware in the IMY can be tested to

verify proper operation. The procedure consists of connecting the Serial

Input (SI), Serial Output (SO), and

20 mA Source into a simple loop,

and then entering an access code.

Connect the IMY as shown at

right. Enter “Pro 9”, key-in “Code

39”, and then press “P”. If the serial

communication hardware is OK,

“PASS” will be displayed.

Conversely, if there is an internal

problem, “FAIL” will be displayed.

After the diagnostic test is complete,

press “P” to return to “Pro 0”.

“CodE” < > “39”

RESTORING ALL PROGRAMMING PARAMETERS BACK TO

FACTORY CONFIGURATION

All of the programming in Modules #1 through #8 can be restored back to

the factory configuration by entering a specific access code (refer to the

“Factory Configuration” section for the data that will be entered). The

procedure consists of entering “Pro 9”, keying-in “Code 66”, then pressing

“P”. The IMY responds by displaying “INItAL” for several seconds, and

then returns to “Pro 0”.

Note: When this procedure is performed, all of the scaling, presets, etc. that

were programmed into the IMY will be overwritten.

“CodE” < > “66”

-18-

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 47 48

Comentarios a estos manuales

Sin comentarios

Apollo Intelligent Meter Series IMY Manual de usuario Pagina 20

Comentarios a estos manuales