Nice M3BAR, Instructions And Warnings For Installation And Use

EN

14

– English

7.4 - Diagnostics

Some devices are able to emit signals that serve to recognise their state of
operation or possible faults.

7.4.1 - Signals of control unit

The LEDs of the terminals and the keys on the control unit emit special signals
both to indicate normal operation and possible faults. Tables 

12

and 

13

describe the cause and solution for each type of signal.

E

TABLE 12 - Terminal LEDs on control unit

Led Bluebus

Cause

Solution

Off

Fault

Check for presence of the power supply; check that the fuses are not 
blown; in this case, identify the cause of the fault and then replace with
versions with the same specifications.

On

Serious fault

This indicates a serious fault; try switching off the control unit for a few
seconds; if the condition persists there is a fault and the electronic 
board needs to be replaced.

1 flash per second

All OK

Normal operation of control unit.

2 quick flashesi

Input status variation

A variation to the status of the inputs SS, STOP, OPEN, CLOSE, 
activation of the photocells, or when the radio transmitter is used, 
is normal.

Series of flashes separated by 

Various

This is the same signal of 1 second as on the flashing light 
(See table 15).

Led STOP

Cause

Solution

Off

STOP input activation

Check the device connected to the STOP input

On

All OK

STOP input active

Led PP

Cause

Solution

Off

All OK

S.S. Input not active

On

S.S. input activation

Normal if the device connected to the S.S. input is active

Led OPEN

Cause

Solution

Off

All OK

OPEN input not active

On

OPEN input activation

Normal if the device connected to the OPEN input is active

Led CLOSE

Cause

Solution

Off

All OK

CLOSE input not active

On

CLOSE input activation

Normal if the device connected to the CLOSE input is active

FC1 limit switch LED

Cause

Solution

Off

Limit switch activation

- If the parameter “Standard motor rotation direction” is set, the pole 
is in the total closing position.
- If the parameter “Inverted motor rotation direction” is set, the pole is 
in the total opening position.

On

Limit switch not activated

- If the parameter “Standard motor rotation direction” is set, the pole 
is in a position other than the total closing position. 
- If the parameter “Inverted motor rotation direction” is set, the pole is 
in a position other than the total opening position.

FC2 limit switch LED

Cause

Solution

Off

Limit switch activation

- If the parameter “Standard motor rotation direction” is set, the pole 
is in the total opening position.
- If the parameter “Inverted motor rotation direction” is set, the pole 
is in the total closing position.

On

Limit switch not activated

- If the parameter “Standard motor rotation direction” is set, the pole 
is in a position other than the total opening position. 
- If the parameter “Inverted motor rotation direction” is set, the pole is 
in a position other than the total closing position.

Led encoder

Cause

Solution

Off

The magnet is in front of the sensor

If there is no manoeuvre in progress it is normal, otherwise there is a 
fault in the encoder or the cable is not connected properly

On

The magnet is not in front of the sensor

If there is no manoeuvre in progress it is normal, otherwise there is 
a fault in the encoder or the cable is not connected properly

Flashing light

Manoeuvre in progress 

All OK if the manoeuvre is in progress; the flashing is proportional to 
the speed

Note – During the execution of the manoeuvre, the flashing speed 
could appear as LED on.