Levitronix LEVIFLOW LFIF Series User Manual

User Manual for LEVIFLOW
®
LFIF-06 Flowmeters
www.levitronix.com
PL-4511-00, RevA, DCO# RD
10
4 Operation
4.1 General Timing Specifications
4.1.1 Startup Time
After power-on a startup sequence proceeded. During this sequence flow measurement is not performed.
Start-up time is about 3 seconds.
4.1.2 Thermal Stability Time
To guarantee specified accuracy thermal stability of sensor has to be reached. Therefore it is recommended
to wait 30 minutes after power-on.
4.1.3 Zero Adjustment Activation Time
There are two possibilities to activate zero adjustment:
1. Activating by LEVIFLOW
®
configuration software: Zero adjustment starts immediately after pressing
corresponding button.
2. Activating by “Zero” button on the flowmeter (see Figure 4) has to be pressed during more than 3 seconds to
initiate zero adjustment.
4.1.4 Automatic Zero Adjustment Duration
The duration to perform an automatic zero adjustment is about 20 seconds.
4.2 Operation
4.2.1 System Operation with PLC Interface
Figure 5 shows the standard configuration of the digital and analogue output. For other configurations the
LEVIFLOW
®
configuration software has to be used (according manual is Levitronix

Doc.# PL-4501-00).
Note: The LFIF-06 flowmeter needs configuration software version V1.34 or higher.
4.2.2 Operation with RS485
Operation with communication over an RS485 bus is possible. The according MODBUS protocol can be
requested at Levitronix

.
4.2.1 LED Messages
#
Event/Situation
LED
Status Description
“Flow”
“High”
“Low”
1a
Power-on - successful
On
3 times blinking of all LEDs and then “Flow” constantly on.
1b
Power on - error
On
On
3 times blinking of all LEDs and then “Flow” and “High” constantly on.
Origin of error can be bubbles etc.
1c
After power-on – zero error
On
On
On
3 times blinking of all LEDs ant the all constantly on.
Zero adjustment failed when the power was turned on last time.
1d
After power-on – firmware
rewriting mode
Off
Off
Off
3 times blinking and then all LEDs off. Firmware rewriting mode.
Contact Levitronix for more information.
2a
Zero adjustment - successful
On
Successful zeroing start is indicated by “High” on and then “High” and
“Low” are on during the 20 seconds zeroing process.
2b
Zero adjustment - failed
On
On
On
Zeroing failed.
3a
Flow measurement - normal
Blinking
Is blinking with frequency proportional to percentage of full scale.
At zero flow constantly on.
3b
Flow measurement – high alarm
Blinking
On
High flow alarm error.
3b
Flow measurement – low alarm
Blinking
On
Low flow alarm error.
4
At parameter writing - error
On
On
On
Parameter writing failed (EEPROM write error etc.).
4
Firmware Download
On
Blinking
Firmware download on-going.
Table 6: LED messages/designation of flowmeter

Levitronix LEVIFLOW LFIF Series Specifications

General

Brand	Levitronix
Model	LEVIFLOW LFIF Series
Category	Measuring Instruments
Language	English