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IMS-MN-LMDA42C_A.pdf
Appendix A:
Diagnostics and Troubleshooting
Operation State and Error Indication
Temperature Monitoring
Sensors in the drive measure the temperature of the power stage. If the permissible maximum
temperature is exceeded, the power stage is de-energized. Indication can be read by reading
object 2019h Output h-bridge temperature options, subindex 01h.
Stall Detection (hMT Disabled)
Detecting a stall condition may be accomplished by monitoring the encoder via the
communications interface on models equipped with an encoder.
When hMT is enabled, a stopped shaft or locked rotor will be indicated by assertion of a locked
rotor error.
Locked Rotor (hMT Enabled)
A locked rotor indication identifies the condition where the rotor/stator relationship exceeded
lead/lag limits
and/or locked rotor timeout
(LT)
as specified during parameterization. When
this condition occurs the power stage will disable and a locked rotor error is asserted.
A locked rotor error condition can only occur when hMT is enabled. This status may be read
using the hMT status bits or error codes.
LED Indicators
The LMD has two LEDs for status indication.
• LED 1: Status of the power supply.
• LED 2: The CANopen status LED shows the states as specified in the
CiA DR-303-3 Indicator specification.
Color
State
Status
Power Indication (LED 1)
Off
None
No Power
Green
Solid
+VDC supply in range
Flashing
+VDC off, drive on AUX power
Red
Solid
+VDC supply out of range
Flashing
+VDC off, AUX power out of range
CANopen Status (LED 2)
Green
Solid
The Device is in the OPERATIONAL state
Single Flash
The Device is in STOPPED state
Flashing
The Device is in the PREOPERATIONAL state
Red
Solid
The CAN controller is bus off
Single Flash
At least one of the error counters of the CAN controller has reached or
exceeded the error level (too many error frames).
Double Flash
A guard event (NMT-Slave or NMT-master) or a heartbeat event (Heartbeat
consumer) has occurred.
Triple Flash
The SYNC message has not been received within the configured
communication cycle period time out (see Object Dictionary Entry 0x1006).