Explanation of the Bits:
Bit 0, Fault:
Bit 0 = "0" means that there is no fault in the frequency
converter. Bit 0 = "1" means that there is a fault in the
frequency converter.
Bit 1, Warning:
Bit 0 = "0" means that there is no unusual situation. Bit 0 =
"1" means that an abnormal condition has occurred.
Bit 2, Running 1:
Bit 2 = "0" means that the frequency converter is not in
one of these states or that Run 1 is not set. Bit 2 = "1"
means that the frequency converter state attribute is
enabled or stopping, or that Fault-Stop and bit 0 (Run 1)
of the control word are set at the same time.
Bit 3, Running 2:
Bit 3 = "0" means that the frequency converter is in neither
of these states or that Run 2 is not set. Bit 3 = "1" means
that the frequency converter state attribute is enabled or
stopping, or that fault-stop and bit 0 (Run 2) of the control
word are set at the same time.
Bit 4, Ready:
Bit 4 = "0" means that the state attribute is in another
state. Bit 4 = "1" means that the state attribute is ready,
enabled or stopping.
Bit 5, Control from net:
Bit 5 = "0" means that the frequency converter is
controlled from the standard inputs. Bit 5 = "1" means that
EIP has control (start, stop, reverse) of the frequency
converter.
Bit 6, Ref from net:
Bit 6 = "0" means that the reference comes from inputs to
the frequency converter. Bit 6 = "1" means that the
reference comes from EIP.
Bit 7, At reference:
Bit 7 = "0" means that the motor is running, but that the
present speed is different from the preset speed reference,
i.e. the speed is being ramped up/down during start/stop.
Bit 7 = "1" means that the frequency converter and
reference speeds are equal.
Bit 8 - 15, State attribute:
(Instance 71 only) Represents the state attribute of the
frequency converter, as indicated in the following table:
Bit Number
Meaning
8
Not used
9
Start up
10
Not ready
11
Ready
12
Enabled
13
Stopping
14
Fault stop
15
Faulted
For more detail of the actual output speed, see the section
Actual output speed under Instances 20/70 and 21/71
.
How to Control
MCA 121 EtherNet/IP
MG.90.J3.02 - VLT
®
is a registered Danfoss trademark
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