Emerson MP25A4 User Manual page 170

Safety Product Mechanical
Information information Installation
Trip
HF11 Data processing error: Access to EEPROM failed
Hardware fault - return drive to supplier
HF12 Data processing error: Main program stack overflow
Hardware fault - return drive to supplier
HF17 Data processing error: No Comms from power processor
217 Hardware fault - return drive to supplier
HF18 Bucket suppressor capacitor failure
218 Hardware fault - return drive to supplier
HF19 Overheat on bucket suppressor or snubber circuits
219 Check internal fan operation
HF20 Power stage recognition: identification code error
220 Hardware fault - return drive to supplier
HF21 Power processor: Watchdog failure
221 Hardware fault - return drive to supplier
HF22 Power processor: Undefined exception
222 Hardware fault - return drive to supplier
HF23 Power processor: Level overrun
223 Hardware fault - return drive to supplier
HF27 Power circuit: Thermistor 1 fault
227 Hardware fault - return drive to supplier
HF28 Power software not compatible with user software
228 Hardware fault - return drive to supplier
HF29 User processor: Armature timing error
229 Hardware fault - return drive to supplier
2
It.AC
I t on drive output current (Refer to Pr 4.16)
Ensure the load is not jammed / sticking
20
Check the load on the motor has not changed
O.ht1 Drive overheat (thyristor junction) based on thermal model
Reduce ambient temperature
21
Reduce overload cycle
O.ht2 Heatsink over temperature
Check enclosure / drive fans are still functioning correctly
Check enclosure ventilation paths
Check enclosure door filters
22 Increase ventilation
Decrease acceleration / deceleration rates
Reduce duty cycle
Reduce motor load
O.ht3 External discharge resistor over temperature
The temperature of the external discharge resistor is monitored by the temperature accumulators. When the resistor temperature
27 (Pr 11.65) reaches 100% the drive will trip
See Pr 11.62, Pr 11.63 and Pr 11.64
O.Ld1 Digital output overload: total current drawn from 24V supply and digital outputs exceeds 200mA
26 Check total load on digital outputs (terminals 24,25,26)and +24V rail (terminal 22)
O.SPd Motor speed has exceeded the over speed threshold
The drive will trip O.SPd if the armature is open circuit when the drive is in estimated speed mode.
Check armature circuit
If the speed feedback (Pr 3.02 (di05, 0.40)) exceeds the over speed threshold (Pr 3.08) in either direction an over speed trip is
7
produced. If this parameter is set to zero, the over speed threshold is automatically set to 1.2 x Pr 1.06 (SE02, 0.23) or Pr 1.07
(SE01, 0.22).
Reduce the speed loop gain (Pr 3.10 (SP01, 0.61)) and speed integral (Pr 3.11 (SP02, 0.62)) to prevent speed overshoot.
170
Electrical Getting Basic
installation started parameters
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the motor operation
Diagnosis
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