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Toshiba – Toshiba LF494 User Manual

Page 148

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TOSHIBA

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P^iriiineter setting— Paramulers can be set as follows depending on whether the LC’D

display is provided or not,

LF404

with

LCD display: I’hree control keys are provided to set conllguration

parameters,

LF404 without LCD display: The AFlOO liand-hdd terminal is needed to set

parameters.

Zero and spun calibration:

Built-'m calibration signal source allows converter unit check.

Zero adjustment:

Zero point adjustment can be started by pressing the switch in the converter.

Conditions when power fails:

The outputs and display will become as follow.s when power fails. Parameter iietting

values are stored in non-volatile memory and the values will be restored v-'hen the

power returns to normal condition.

Current outpul: 0 mA dc

Digital output; OFF (Op^n )

LCD display: No display

Power supply:

One of Ihc following can be selected:

* 100 to 240 V ac (Allowable voltage SO to 264 V ac ), iO/bO Hz (standard).

* 24 V dc (Allowable voltage 2T4 to 28.8 V dc)
* 110 V dc (Allowable voltage iJS to 121 V dc)

Arrester:

Arresters are installed irt the power supply and current signal output circuit.

To use the arresters, ground the GND terminal. ( See Chapter 5, "Wiring/’)

Housing: Aluminum alloy
Coat i ng: Aery I ic re si n-ba ked coat; ngj pearl -gray colored

Strueturr; 1P67 (NEMA4) Watertight

Cable connection port 1/2-14 NPT thread

Vibration resistance

No resonance To the following levels of vibration:

• 10 to 60 J Iz, amplitude 0.07 mm;
* 60 to 150 Hz with acceleration of 9,8 m/s’.

No problem occurs after application of Hz, 29,4 m,/s vibration in any axis for four 4
hours.

Note: Avoid using the flowmeter in an environnieiU with constant vibration.

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