Danfoss VLT DeviceNet MCA 104, Programming Manual

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NOTICE
Changes affect parameter 3-15 Reference Resource 1 to
parameter 3-17 Reference Resource 3 .
For the speed reference, see chapter 4.4.3 Bus Speed
Reference Value under Instances 20/70 and 21/71 .
4.4.2 Status Word under Instances 20/70
and 21/71
Illustration 4.5 Status Word in Instances 70 and 71
NOTICE
The bits 00 and 02 in instance 70 are identical with bits
00 and 02 in the more extensive instance 71.
Bit Instance 70 Instance 71
Bit = 0 Bit = 1 Bit = 0 Bit = 1
00 – Fault – Fault
01 – – – Warning
02 – Running 1
Fwd
– Running 1
Fwd
03 – – – Running 2
Rev.
04 – – – Ready
05 – – – Control
from Net
06 – – – Reference
from Net
07 – – – At
reference
08–15 – – State attribute
Table 4.3 Bits in Instances 70 and 71
Explanation of the bits:
Bit 0, Fault
Bit 0 = 0: There is no fault in the frequency converter.
Bit 0 = 1: There is a fault in the frequency converter.
Bit 1, Warning
Bit 0 = 0: There is no unusual situation.
Bit 0 = 1: An abnormal condition has arisen.
Bit 2, Running 1
Bit 2 = 0: The frequency converter is not in the running
forward state, or run 1 is not set.
Bit 2 = 1: 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: The frequency converter is not in the running
reverse state, or run 2 is not set.
Bit 3 = 1: The frequency converter state attribute is
enabled or stopping, or fault-stop and bit 0 (run 2) of the
control word are set at the same time.
Bit 4, Ready
Bit 4 = 0: The state attribute is in another state.
Bit 4 = 1: The state attribute is ready, enabled, or stopping.
Bit 5, Control from net
Bit 5 = 0: The frequency converter is controlled from the
standard inputs.
Bit 5 = 1: The DeviceNet has control (start, stop, reverse) of
the frequency converter.
Bit 6, Ref from net
Bit 6 = 0: The reference comes from inputs to the
frequency converter.
Bit 6 = 1: The reference comes from the DeviceNet.
Bit 7, At reference
Bit 7 = 0: The motor is running, but the present speed is
different from the preset speed reference, for example, the
speed is being ramped up/down during start/stop.
Bit 7 = 1: 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
Table 4.4 .
Bit number Meaning
8 (Vendor specific)
9 Start up
10 Not ready
11 Ready
12 Enabled
13 Stopping
14 Fault stop
15 Faulted
Table 4.4 State Attribute (Instance 71)
For more details of the actual output speed, see
chapter 4.4.4 Actual Output Speed under Instances 20/70 and
21/71
.
4.4.3 Bus Speed Reference Value under
Instances 20/70 and 21/71
The speed reference value is transmitted to the frequency
converter as a 16-bit word. The value is transmitted as a
whole number. Negative figures are formatted by 2’s
complement.
Control
VLT
®
DeviceNet MCA 104
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