ACH550 E-Clipse Bypass User’s Manual
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Embedded fieldbus
Feedback from the drive
Pre-defined feedback
Inputs to the controller (drive outputs) have pre-defined meanings established by the
protocol. This feedback does not require drive configuration. The following table lists
a sample of feedback data.
Mailbox read/write
The ACH550 provides a “Mailbox” function to access parameters that have not been
pre-defined by the protocol. Using mailbox, any drive parameter can be identified
and read. Mailbox can also be used to adjust parameter settings by writing a value to
any parameter identified. The following table describes the use of this function.
Note:
You must read and write mailbox values using the drive’s internal scaling. For
example, the parameter 2202, ACCEL TIME1, has a resolution of 0.1 sec., which
means that, in the drive (and in the mailbox), the value 1 = 0.1 seconds. So, a
mailbox value of 10 translates to 1.0 second, a mailbox value of 300 translates to
30.0 seconds, etc. Refer to the
in the ACH550-UH User’s
Manual for each parameter’s resolution and units of measure.
Drive Parameter
BACnet Access
Point
0102
SPEED AV0
AV0
0103
SPEED AV0
AV1
0104
CURRENT AV4
AV4
0105
TORQUE AV5
AV5
0106
POWER AV6
AV6
0107
DC BUS VOLT
AV2
0109
OUTPUT VOLTAGE
AV3
0115
KWH COUNTER
AV8
0118
DI1-3 STATUS
B16, B17, B18
0122
RO1-3 STATUS
B10, B11, B12
Drive Parameter
BACnet Access
Point
Mailbox Parameter
Enter the number of the drive parameter to access.
AV25
Mailbox Data
Contains the parameter value after a read, or enter the
desired parameter value for a write.
AV26
Mailbox Read
A binary value triggers a read – the value of the
“Mailbox Parameter”appears in “Mailbox data”.
BV15
Mailbox Write
A binary value triggers a write – the drive value for the
“Mailbox Parameter” changes to the value in “Mailbox
data”.
BV16
Summary of Contents for ACH550-BCR
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