ABB ACH580 Series, Руководство пользователя

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ACH580 E-Clipse bypass and packaged drive user manual 79
Embedded fieldbus
Communication setup – EFB
The addition of serial communications to the ABB E-Clipse bypass system is done
by bringing the network connection to the bypass and using the bypass software to
direct messages either to the drive or to the bypass control software. The user
makes no connection to the drive fieldbus terminals since this channel is reserved
for the bypass control interface to the drive.
For all EFB Protocols, the drive is viewed as one node and the bypass is viewed as
a separate node. This node and bypass, along with the physical and logical
connections for communications are illustrated in the following figure.
Setup of the drive logical connection is done in parameter Group 58 on the bypass
keypad. This group contains, among other things, the Drive MAC ID and Device
Object Instance ID. Group 58 on the drive must not be modified from the settings
defined by drive parameter 95.21, HW options word2; bit 5, Bypass present.
Selection of the EFB protocol is done in bypass parameter 9802. Setup of the
bypass logical connection is done in parameter Group 50 on the bypass keypad.
The user can use bypass parameter 1625, COMM CTRL to determine if control
signals (start and enables) go to the drive or to the system. Parameter 1625 = 0
(DRIVE ONLY) is intended for legacy applications where the network was only able
to control the drive. Parameter 1625 = 1 (SYSTEM) provides new functionality where
control signals control both the drive and bypass depending on the drive/bypass
mode selected on the bypass keypad. In both cases, non-control related points are
visible on the bypass. Parameter 1625 should be left as DRIVE ONLY when the
Building Automation System is only monitoring, and not controlling, the drive
package over communications.
RBCU (E-Clipse Bypass Control Unit)
E-Clipse bypass
1625 = (0) Drive Only
Drive serial
communication
drive control enabled
1)
E-Clipse bypass
parameter1625 = (1) System
Drive & Bypass serial
communication control
enabled
1)
Internal
MODBUS
Interface
ACH580
2)
2) The ACH580 connected to the E-Clipse bypass has
been programmed at the factory. Unless specified, do
not modify drive parameters. Use bypass parameters
group 58 for drive serial communication configuration.
Factory configured
Do not alter
Drive parameter
Drive interface
Bypass parameter
group 58
Drive node ID
Drive node ID
Bypass interface
Bypass parameter
group 50
1) Parameter 1625 only activates serial communication
control. Both the drive and bypass will be visible to the
serial communication link. For all configurations both the
bypass and drive node ID must be set to a unique value.
Fieldbus
Interface
Network Client
RS485
Bypass