Toshiba Electromagnetic Flowmeter Converter TIC-LF232A - Manual (Page 2)

TIC-LF232A
2
Power supply:
One of the following can be selected
・ 100 to 240 Vac
(Allowable voltage 80 to 264 Vac, 50/60Hz)* 1
・ 24 Vdc
(Allowable voltage 21 to 27 Vdc)* 2
*1 When the 7 th digit of specification code is “B”,
power supply is 100 to 120Vac
(Allowable voltage range is 80 to 132VAC, 50/60Hz)
*2 When the 7 th digit of specification code is “B”,
24Vdc cannot be selected.
Power consumption:
17W (27VA) or less
( When 7 th digit of specification code is “A” )
35W (120VA) or less
(When 7 th digit of specification code is “B”)
Converter Specifications
Input signals
Analog signal — the voltage signal from detector,
proportional to process flow rate.
Digital input DI (opt.)
(added when 9
th digit of specification code is ”3”)
Voltage level: High level 20 to 30 V dc
Low level 2 V dc or less
Input resistance: 2.7 k Ω
Number of inputs: 2 points (DI1 and DI2)
DI functions:
For digital input function, either of the following
functions can be selected.
• Range switching
One Digital Input is used: switching between large
and small ranges of forward/reverse, 2-range
measurement.
Two Digital Inputs are used: switching between
ranges of single direction, 4-range measurement.
• Totalizer control input
Totalizer Start/Stop control or Reset/Start
•Output hold input
Fixed with set value for current output and pulse
output (loop check)
• Zero adjustment
Starts zero adjustment (on-stream at zero flow rate)
when DI voltage level goes low after remaining
high for 10 to 20 seconds.
Output signals
Current output:
4–20mAdc (load resistance 0 to 1K Ω)
Digital output (DO) — One point (std.) and three
more point is optionally available as follows.
Digital output DO1 (std.):
Output type: Transistor open collector
Number of outputs: One point
Output capacity : 30Vdc, 200mA maximum
Digital output DO2～DO4 (opt.)
(Added when 9
th digit of specification code is “3”)
Out put type: Solid-state relay output (non polarity)
Number of outputs: 3 points
Output capacity: 150Vdc, 150mA maximum or
150Vac (peak to peak),
100mA maximum
DO functions—Four digital output function, either
of the following functions can be selected.
• Totalizer pulse output
DO1 or DO2 can be selected (Forward direction
pulse and reverse direction pulse can be assigned
independently)
In the case of DO1
Pulse rate: 3.6 to 3,600,000 pulses/h
Pulse width:Settable within the range of 0.3 to
500ms
In the case of DO2
Pulse rate: 3.6 to 360,000 pulses/h
Pulse width: Settable within the range of 4 to
500ms
• Rage switching output
One Digital Output (DO) is used
Single direction, 2-range switching signal
Forward/reverse direction switching signal
Two Digital Outputs (DO) are used
Single direction, 4-range switching signals
Forward/reverse 2-range switching signals
• High/low limit alarm output
An alarm is output when flow rate goes above or
below the set-point value
Setting range: -10 to 110% of the settable
maximum range
High limit 2 points, low limit 2 points can be set
At the time of alarm output, Normally Open or
Normally Closed contact can be selected
• Preset point output
Contact ON when totalizer count exceeds the set
value
Setting range: 1 to 99999999 count
• Converter error alarm
An alarm is output when an operation error is
detected by self-diagnosis.
At the time of alarm output, Normally Open or
Normally Closed contact can be selected