DayTronic 5D78 Manual de instrucciones - Página 12

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being displayed). The three limit zones are defined by

the 3000PLUS instrument's current HIGH LIMIT ("HIL")

and LOW LIMIT ("LOL") settings:

• HI (or "GREATER THAN")—Channel 2's reading is

greater than the current high limit value

• OK (or "BETWEEN")—Channel 2's reading is greater

than or equal to the current low limit value and less

than or equal to the current high limit value

• LO (or "LESS THAN")—Channel 2's reading is less

than the current low limit value

When limit monitoring is disabled, none of the limit indi-

cators will light.

For a complete discussion of limit monitoring, including

definition of limit setpoints, limits LATCH MODE ("LAT"),

relay contact POLARITY ("POL"), and both high-limit

and low-limit HYSTERESIS deadbands ("LHY" and

"HHY"), see Section 5.E.

-T

IME

IMITS

ISPLAY

When the 3000PLUS instrument's LIMITS SECURITY

(LMS) is OFF, the local operator is able to use the front-

panel buttons (as explained in Sections 1.E and 5.E) to

quickly view and adjust the operating limit values during

normal run-time operation, without having to enter

Setup Mode. This is the case even when limit monitor-

ing is currently disabled (Section 5.E).

When limits security is ON, the operator can view and

modify the limits values for monitoring the "auxiliary"

DAC output only by following the standard front-panel

setup procedure given in Section 3, which may require

entry of a security code.

ETUP

TAGE

NDICATION

Each of the seven front-panel setup indicators shown in

Fig. 2 will light when the 3000PLUS enters the corre-

sponding stage of the FRONT-PANEL SETUP PROCE-

DURE, as listed below and described in detail in

Section 3. Except for ST ("SETUP"), each indicator will

remain on only as long as the meter is in that setup

stage; ST will remain on until the operator exits setup

mode.

1. ST ("SETUP")—security and module identification

2. RG ("RANGE")—input range and scaling information,

including (for the 5D78 module) excitation frequen-

cy, full-scale mV/V range, desired full-scale reading

in units, and desired decimal-point resolution

* Also on when viewing limits in run-time (see above).

3000PLUS

5D78 I

WITH

1. I

NTRODUCTION

3. FL ("FILTER")—analog and digital filter settings

4. CL ("CALIBRATION")—including desired calibration

method and all cal-point values applicable to that

method

5. LM ("LIMIT")—parameters relating to the limit moni-

toring of the "auxiliary" output (Channel 2), including

limit enable, latch mode, relay polarity, setpoint val-

ues, and hysteresis windows*

6. PK ("PEAK")—parameters relating to the further pro-

cessing of the "auxiliary" output (Channel 2), includ-

ing peak mode, "defeat" threshold, "backout"

threshold, decay rate, and tare offset

7. AN ("ANALOG OUTPUT")—full-scale voltage output,

followed by entry a new security code, if desired

ODULE

TATUS

Shown in Fig. 3, the status indicator light of the installed

5D78 Conditioner module serves to monitor the mod-

ule's power, input, communications, and general health

condition. The condition(s) represented by the light's

three possible colors and color combinations are given

below.

NOTE: As long as the module is properly communicat-

ing with the 3000PLUS meter (and the meter is pow-

ered up), the indicator light will be flashing.

• if the flashing light is constantly GREEN, the mod-

ule's input signal is OK

• if the flashing light is constantly YELLOW, the mod-

ule's input signal is over 20% out of range

• if the flashing light is constantly RED, a serious input

condition has been detected (e.g., excessive cur-

rent, overvoltage); it could indicate a transducer

short or faulty cabling

• if the flashing light is alternating YELLOW AND

GREEN, the module has received a mnemonic

command from the 3000PLUS meter (the yellow

light will continue for about a second after receipt of

the command-terminating carriage return)

• if the flashing light is alternating RED AND GREEN,

a significant internal software error detected; contact

the Daytronic Service Department

NSTRUCTION

ANUAL V

NDICATION

. SB.3

3KP78 - 1.8