Toshiba LF434 - Manual (Page 148)

TOSHIBA
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üOl and D02 functions — One of the following functions can be assigned for DOl
(standard) and/or DO2 (option),
* PtiEse output (available only for DOl)
Pulse raie^ 3.6 to 36(100011 pulscs.^our
Pulse width: Ь,У to 5ÜÜ ms (but Jess than half of the period of pulse output for
100% flow rate)
* Mu It I-range selection oulpuls
One output used: (1) 2-range switching fur unidirectional flow
(DOl or D02) (2) Forward/Reverse flow range switching
Two outputs used: (1) 4-range switching for unidirectional flow
(DOl and D02) (2) 2-range switching for Forward and Reverse flows
* High and/or low limit alarms outputs
Outputs an alarm signal if the process flow rale goes above or
below the set limits. Output status is programmable,
Setting range: -10 to 11C% of tJic span (range)
Output status: Kormal Open or Normal Close selected
« Empty pipe alarm output
Outputs an alarm signal when the dctccior pipe is not filled whth
fluid.
Output status: Normal Open or Normal Close selected
* Preset point output
Outputs a signal when the totalized flow reaches the preset value.
Selling range: 1 to 999999^^ counts
Output status: Contact ÜN (closed)
* Converter failure alarm
Outputs a signal if an error occurs when self-diagnostics is
conducted.
Output status; Normal Open or Normal Close selected
Communications output
a ,small digital signal is superimposed on 4-20 mA current signal
(conformed to HAR'T protocol)
Loud resistance:
Load capacitance:
Ijoad inductancei
Cable length:
240 :o 1
0.25 p i F maximum
4mH maximum
2km maximum (approximate value when 1,25mnr shielded
cable is used under standard operating condition)
Note: HART (Highway Addres,sable Remote Transducer) is a communications
protocol for industrial sensors recommended by IICF
(HART Cominuntcarioti Foundation),
Damping: 0,5 lo 60 seconds (selectable in increments of 1 second)
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