2-100 ACH550 E-Clipse Bypass User’s Manual
Embedded fieldbus
Activate bypass control functions – EFB
Controlling the bypass
Fieldbus control of various bypass functions requires configuration to:
• Tell the system to accept fieldbus control of the function.
• Define as a fieldbus input, any bypass data required for control.
• Define as a fieldbus output, any control data required by the drive/bypass.
The following sections describe, at a general level, the configuration required for
each control function.
Start/stop control (System)
Using the fieldbus for start/stop control of the system requires:
• Bypass parameter values set as defined below.
• Fieldbus controller supplied command(s) in the appropriate location. (The
location is defined by the Protocol Reference, which is protocol dependent.)
• Control commands must be addressed to the Bypass node with parameter 1625
set to 1 (
SYSTEM). For DRIVE ONLY control refer to Start/stop control (Drive only)
on page 2-93.
Bypass Parameter Value Description
Protocol Reference
Modbus N2 FLN BACnet
1601 S
TART/STOP 2 (COMM) Start/Stop by
fieldbus with Ext1
or Ext2 selected.
40001 bit 0 BO1 24 BV10
1625
COMM CTRL 1 (SYSTEM) Enable system
control.
N/A
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