ROSCAMAT MOSQUITO, Operator'S Manual

CHAPTER 4 – TROUBLE SHOOTING                                                                    

9

PROBLEM: THE MACHINE FAILS TO OPERATE, THE MOTOR DOES NOT START OR 
STOPS

 
Remove the electronics box housing (2, page 4) thereby exposing the electronics, and check the 
trouble condition by means of the showed display at the “variator’s board (inverter)”.  
 
 

Items Detail 

Specifications 

Indication 

Alarm mode

Reasons of lecture 

Overcurrent 
protection 

OC 1: Overcurrent during acceleration 
OC 2: Overcurrent during deceleration 
OC 3: Overcurrent during running constant speed 

Input phase loss 
connection 

L in: Input phase loss 

Undervoltage 
protection 

LU: Undervoltage 

Protección contra 
Output phase loss 
connection 

OPL: Output phase loss. 

Overvoltage 
protection 

OU1: Overvoltage during acceleration 
OU2: Overvoltage during deceleration 
OU3: Ovevoltage during running at constant speed 

Overheat protection 

OH1: Overheating during the heat sink 
dbH: overheating of the DB circuit 

External alarm 
input 

OH2: External thermal relay tripped 

Motor protection 

OH4: Motor protection (PTC thermistor) 
OL1: motor overload; thermoelectric protector motor relay 

Overload protection  OLU: Inverter unit overload 
 

Er1: Memory error 

Er2: Remote keypad communications error 

Er3: CPU error 

Operation 
protection 

Er6: Operation procedure error 

Er8: RS485 comunication error 

ErF: Date save error due to undervoltage 

Running or alarm mode 

Alarm history saves and displays the last 4 trip codes and their detailed 
description. Even with main power off, the alarm history data of the last 
4 trips are retained. 

.  
- In any trouble shooting case, you must “reset” the machine and re-start the system again.  
  Switch off and on the machine. If the problem is due to the external voltage or current, you must    
  wait until it stabilizes. If the problem continues, get in touch with your distributor or manufacturer

.  

PROBLEM: THE TILTING ARM DROPS 

Probable reason  

Solution 

1.- Not-equilibrated arm             =  Balance  the  arm  according  to  the  weight  to  be  held.  Verify 

point C  (page.7) 

2.- Defective damper   

=  Replace it for a new one (page.11)