Instruction DVG EC controller

© 2019 OJ Electronics A/S
26
INSTRUCTIONS OJ-DV | Maintenance and troubleshooting
Motor power has reached it’s limit
✓ OJ-DV has reached the limit for
maximum output power.
✓ The connected motor is larger than
allowed for the chosen OJ-DV
✓ The load is too big for the
connected motor.
Warning ”RP”
Earth fault
(Only OJ-DV-3110 & OJ-DV-3150)
✓ Earth fault on motor cables or motor
windings
Alarm ”SA5”
Running in the wrong direction
✓ Windmilling in the opposite direction
during the start up process.
Alarm ”SA5”
Fault in internal EEPROM circuit
✓ Incorrectly chosen configuration file
- tried to download a configuration
file which is not contained in OJ-DV
✓ OJ-DV is defective.
Warning ”RP”
Phase error in motor supply (U, V, W)
✓ One or more motor phases / motor
cables is disconnected.
✓ One or more motor windings is
disconnected.
Alarm ”SA5”
Internal communication fault
✓ During the process of updating
the MOC configuration file,
communication was inadvertently
disconnected.
✓ If the alarm goes o during normal
operation, it usually indicates a
defective OJ-DV.
Alarm ”SA5”
Ripple voltage too high
✓ Imbalance on voltage supply.
Warning ”RP”
External 24VDC supply overloaded.
✓ Overloading or short circuit on +24V
voltage supply.
Warning ”RP”
Abbreviations:
”RP”=Reduced performance
”SA5”=Motor stops after 5 restarts caused by same fault within 60 min
20. LED indications
• OJ-DV is equipped with a two-colour LED which
indicates operating status.
• The LED is located on the underside of OJ-DV
beside the entry for the mains cable.
See fig. 20.1.
• Lights constantly green when mains voltage is
connected
• Flashes green when Modbus communication is
active
• Lights constantly red when at least one critical
alarm is active
• Flashes red when at least one non-critical alarm is
active
21. Modbus addressing of OJ-DV
Modbus addressing of OJ-DV can be accomplished in two dierent ways.
• Via the addressing pins of the ”A” or ”B” connectors – see fig. 12.14.1 and table 21.1.
Table 21.1
Add.
Pin. no.
0X36 (54 dec) 0X37 (55 dec) 0X38 (56 dec) 0X39 (57 dec)
Add.Pin1
Add.Pin2
Figure 20.1
BR1014A06a
© 2015 OJ Electronic A/S
LED
BR1014A06a