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298 HVAC Drive H300
Issue Number: 3
Inter-connect Multi-power module drive interconnection cable error
103
The sub-trip "xx.0.00" indicates which power module has detected the fault where xx is the power module number. It should
be noted that this trip is also initiated if the communication fails either when a rectifier signals a fault or a trip is reset. In this
case, the sub-trip is the number of modules that are still communicating correctly.
Keypad Mode Keypad has been removed when the drive is receiving the speed reference from the keypad
34
The Keypad Mode trip indicates that the drive is in keypad mode [Reference Selector (01.014) = 4 or 6 or M2 reference
selector (21.003 = 4 or 6 if motor map 2 is selected] and the keypad has been removed or disconnected from the drive.
Recommended actions:
• Re-install keypad and reset
• Change Reference Selector (01.014) to select the reference from another source
Motor Too Hot
Output current overload timed out (I
2
t)
20
The Motor Too Hot trip indicates a motor thermal overload based on the rated current (Pr 05.007) and motor thermal time
constant (Pr 04.015). Pr 04.019 displays the motor temperature as a percentage of the maximum value. The drive will trip
on Motor Too Hot when Pr 04.019 gets to 100 %.
Recommended actions:
• Ensure the load is not jammed / sticking
• Check the load on the motor has not changed
• If seen during an auto-tune test in RFC-S mode, ensure the motor rated current in Pr 05.007 is ≤ Heavy duty current
rating of the drive
• Tune the rated speed parameter (RFC-A mode only)
• Check feedback signal for noise
• Ensure the motor rated current is not zero
Trip Diagnosis
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