Emerson Unidrive M400 Series User Manual page 154

Safety Product Mechanical
information information installation
Sub-array RAM RAM allocation error
The Sub-array RAM trip indicates that an option module derivative or user program image has requested more parameter
RAM than is allowed. The RAM allocation is checked in order of resulting sub-trip numbers, and so the failure with the
highest sub-trip number is given. The sub-trip is calculated as (parameter size) + (parameter type) + sub-array number.
227
Derivatives can customize menus 18 and 20.
Applications menus
Derivative image
User program image
Option slot 1 set-up
Option slot 1 applications
Temp Feedback Internal thermistor has failed
The Temp Feedback trip indicates that an internal thermistor has failed in the drive (i.e. open circuit or short circuit). The
thermistor location can be identified by the sub-trip number.
Source
Power system
218
Power system
Recommended actions:
• Hardware fault – Contact the supplier of the drive
Brake resistor over temperature
Th Brake Res
The Th Brake Res trip is initiated if the hardware based braking resistor thermal monitoring is connected and the resistor
overheats. If the braking resistor is not used, then this trip must be disabled with bit 3 of Action On Trip Detection (10.037) to
prevent this trip.
10 Recommended actions:
• Check brake resistor wiring
• Check braking resistor value is greater than or equal to the minimum resistance value
• Check braking resistor insulation
Th Short Circuit Motor thermistor short circuit
The Th Short Circuit trip indicates that the motor thermistor connected to terminal 14 (digital input 5) on the control
connections, is short circuit or low impedance (<50 Ω).
25 Recommended actions:
• Check thermistor continuity
• Replace motor / motor thermistor
Motor thermistor over-temperature
Thermistor
The Thermistor trip indicates that the motor thermistor connected to terminal 14 (digital input 5) on the control connections
has indicated a motor over temperature. If Digital Input 5 Mode (08.035) is 2 then a thermistor trip is initiated if the feedback
value is higher than Thermistor Trip Threshold (07.048).
24 Recommended actions:
• Check Threshold Level (Pr 07.048)
• Check motor temperature
• Check thermistor continuity
User OI ac User OI ac
A User OI ac trip is initiated if the output current of the drive exceeds the trip level set by User Over Current Trip Level
8
(Pr 04.041).
User Prog Trip Trip generated by an onboard user program
This trip can be initiated from within an onboard user program using a function call which defines the sub-trip number.
96 Recommended actions:
• Check the user program
154
Electrical Getting Basic
installation started parameters
Parameter size Value
1 bit 1
8 bit 2
16 bit 3
32 bit 4
64 bit 5
Sub-array
xx
01
01
Running NV Media Card
Optimization
the motor Operation
Parameter type
Volatile
User save
Power-down save
Menus
18-20
29
30
15
25
y
0 Thermistor location defined by zz in the power system
1 Thermistor location defined by zz in the rectifier
Onboard Advanced
Diagnostics
PLC parameters
Value
0
1
2
Value
1
2
3
4
5
zz
Unidrive M400 Control User Guide
Issue Number: 1
UL
information