Novus 81500FT020 Instruction Manual Download Page 4

N1500FT Flow Indicator 

NOVUS AUTOMATION 

4/9 

The images below show connections for different output types: 

 

 

 

Fig. 9

 - Current connection 

Fig. 10

 – Pulse output 

connection 

 

Fig. 11

 - 24 V auxiliary power supply connection 

OPERATION 

The indicator front panel, and its parts, can be viewed in 

Fig. 12

 

Fig. 12

 – Identification of front panel parts 

The indicator has the following parts: 

Upper Display / Programming

: Shows the intended value (set on 

Ma1n

 screen of Function Cycle). At the time of setup, it shows the 

mnemonics for the different parameters that should be defined. 

Lower Display / Parameters

: Shows the intended value (set on 

Ma1n

 

screen of Function Cycle). At the time of setup, it shows the 

values established for the several parameters. 

Rx and Tx Indicators

: They show activity in the RS485 

communication line. 

A1, A2, A3

 and 

A4 Indicators

: They show the alarms that are on. 

 

Key

: “Function” key, whose operation is user selectable. 

 

Key

: This key has two functions. When you press it quickly, 

you are taken to the next screen. When you press and hold for more 

than 3 seconds, you will be taken to the next cycle and subsequently 

on if you keep holding. 

Up 

 and 

Down 

 keys

: They allow changing the parameter 

values. They are also used for viewing the memorized maximum and 

minimum values. 

 

Key

: Return key. When you press it quickly, you are taken to 

the previous screen. If you press and hold for more than 3 seconds 

outside the main cycle, you will be taken back to the main cycle. If 

you hold this key for more than 10 seconds inside the main cycle, 

the 8-digit serial number will be shown on both displays. 

FUNCTION 

OPERATION METHOD 

Go to the next cycle. 

Press 

  for more than 3 

seconds. 

Go to next screen in the 

cycle. 

Press 

Go to previous screen in 

the cycle. 

Press 

Increase the number of 

decimal places in the 

value viewed. 

Press 

  while holding 

Available only for some parameters! 

Reduce the number of 

decimal places in the 

value viewed. 

Press 

  while holding 

Available only for some parameters! 

Change a digit in the 

value being modified. 

Press 

  while holding 

Available only for some parameters! 

Change a parameter. 

Press 

  or 

  to select  the 

next option or, in the case of a 

numerical value, to increase or 

decrease the value. 

Show the maximum 

value. 

On the first screen of the main cycle, 

press 

Show the minimum 

value. 

On the first screen of the main cycle, 

press 

Show the equipment 

serial number. 

On the first screen of the main cycle, 

press 

 for 10 seconds. 

SPECIAL KEYBOARD FUNCTIONS (DECIMAL PLACES) 

There are several screens whose values are the “floating point” type, 

that is, they take a varying number of decimal places. In such cases, 

special combinations of keys may be used to edit values. 
The special function is activated by pressing 

,  therefore you 

have 3 seconds to use it with any other key, otherwise the original 

In order to increase the number of decimal  places, quickly press 

  while holding 

.  The number of decimal places will be 

reduced if you quickly press 

 while holding 

When the operating element of the screen is the floating point type, it 

is also possible to choose which digit will be increased or decreased. 

In order to choose the digit, quickly press 

 while holding 

Selection of the digit occurs from right to left and the chosen digit will 

blink fast. 
There is an exception to the main screen. Instead of parameters, this 

screen shows  values for the inputs. These values are shown as 

floating points in both displays. In this case, it is possible to set the 

number of decimal places in the lower display by quickly pressing 

  while holding 

.  In order to set the number of decimal 

places in the upper display, quickly press 

 while holding 

Note

: It is recommended to disable/suspend the control whenever it 

is necessary to change the device settings. 

PROGRAMMING THE INDICATOR 

MAIN CYCLE 

888888 
888888

 

The first screen of the main cycle can be 

programmed in the 

Main

 screen. 

SP.A1 

S

et

p

oint 

A

larm 

1

 

Setpoint Alarm 1. Visible only is alarm 1 is active. 

SP.A2 

S

et

p

oint 

A

larm 

2

 

Setpoint Alarm 2. Visible only is alarm 2 is active. 

SP.A3 

S

et

p

oint 

A

larm 

3

 

Setpoint Alarm 3. Visible only is alarm 3 is active. 

SP.A4 

S

et

p

oint 

A

larm 

4

 

Setpoint Alarm 4. Visible only is alarm 4 is active. 

Table 2

 – Main cycle keys 

Summary of Contents for 81500FT020

Page 1: ...ization will continue even if the input rate is below the minimum rate required Instantaneous flow rate indication will be zero whenever there is a time lapse of 10 seconds without input variation In...

Page 2: ...utput frequency has hardware limitation See Specifications Check the Specifications ALARMS The indicator s basic version has 2 alarm outputs with the option of up to 4 alarms Whenever an alarm is on a...

Page 3: ...feeder alarm will be activated If the process was stopped all counters will keep their values and the process will remain stopped until it is activated either by the key or the digital input MANUAL OP...

Page 4: ...value being modified Press while holding Available only for some parameters Change a parameter Press or to select the next option or in the case of a numerical value to increase or decrease the value...

Page 5: ...Table 5 Key f Key Function Selection of key function See Table 6 d 1n F Digital Input Function Selection of digital input function See Table 6 reset Reset Resets totalizer Bat rst Feeder Batch Reset...

Page 6: ...f the 4 20 mA input is enabled The YES option applies quadratic function on the input signal within the limits programmed in inLL and inkL Table 7 Input setup cycle keys SELECTION OF FLOW INPUT TYPE S...

Page 7: ...nt close to 20 mA will be applied Measure current in mA and enter it on this screen rstr Restore Restores factory calibration Pa x Password Change Changes user password Prot Protection Protection leve...

Page 8: ...control and sends a response to the master The indicator takes broadcast type commands addresses to all network instruments For this type of command the indicator does not send any reply or acknowledg...

Page 9: ...Isolation 250 Vrms Pulse Maximum frequency 100 Hz Voltage 0 to 30 Vdc Maximum current 15 mA Isolation 250 Vrms OUTPUT RELAYS ALM1 and ALM2 SPDT 3 A 240 Vac 3 A 30 Vdc resisitive ALM3 and ALM4 SPST NA...

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