AMCI SMD17K, User Manual

Page: 75 / 98

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SMD17K User Manual
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OMMAND
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ORMAT
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Input Data Format (continued)
STATUS_word1 Format (continued)
Bit 7: Driver_Fault –
If the driver section of the SMD17K is enabled, this bit will be a “1” during a Over-
temperature Fault. Even though the driver is enabled, it will not supply current to the motor until the
motor’s temperature decreases to a safe value. At this point the fault will clear itself.
Bit 6: Reserved –
Will always equal zero.
Bit 5: PreOp_SafeOp –
Set to “1” when the network is in Pre_Op or Safe_Op modes. Moves cannot be
commanded while in these modes. Reset to “0” when the network is in Operational mode. Moves
can only be commanded when in Op mode.
Bit 4: Temperature_Above_90°C –
This bit is set to “1” when the processor internal temperature exceeds
90°C. At this point, the heatsink temperature is typically near 83°C. If this bit trips often and you
want to lower the operating temperature of the unit, consider changing how the device is mounted, or
installing a fan to force additional airflow over the device.
Bit 3: Reserved –
Will always equal zero.
Bit 2: Reserved – Will always equal zero.
Bit 1: IN2_Active – “1” when Input 2 is in its active state. The active state of the input is programmed as
explained in the CFG_Word_1 Format section starting on page 58.
Bit 0: IN1_Active – “1” when Input 1 is in its active state. The active state of the input is programmed as
explained in the CFG_Word_1 Format section starting on page 58.
Notes on Clearing a Driver Fault
A Driver Fault occurs when there is an over temperature condition. When a Driver Fault occurs, the SMD17K
will set bit 7 of the Status Word 1 word in the Network Input Data. Even though the driver is enabled, it will
not supply current to the motor. This fault is not self clearing. You must cycle power to the unit to clear this
fault. If the temperature of the motor is too high after the power cycle, the over temperature fault will trip
again.