Master Follower; Master Follower Mode 1 & 2; Master Follower Mode 3 & 4 - Danfoss Vacon NXP Applications Manual

92 · vacon
5.8

Master follower

5.8.1 Master follower mode 1 & 2
A system that has two back-to-back AFE units can be controlled by using system bus
communication. This will reduce the need for I/O control, because you have to, for example, give a
start command only on the drive. In addition to this, when there is a fault, the drives can operate
logically because both drives know the status of the other drive.
5.8.2 Master follower mode 3 & 4
To become available, these modes require licences. Recommendations for these modes are given by
the manufacturer, if necessary.
NOTE! The NXP control board must be VB00761 (NXP3) or newer. OPT-D2 boards must be VB276J or
newer. Master needs to be #1 and cannot be changed.
The OPTD2 board in the Master has default jumper selections, that is, X6:1-2, X5:1-2. For the
followers, the jumper positions have to be changed: X6:1-2, X5:2-3. This board also has a CAN
communication option that is useful for multiple-drive monitoring with the NCDrive PC software
when you are commissioning Master Follower functions or line systems.
OPTD2
Jumper X5 : TX1
X6 : ON
Master
SBInUse = Yes
SBID = 1
SBNextID = 2
SBLastID = 4
H1
(RX)
5
OPTD2
Jumper X5 : TX2
X6 : ON
Follower
SBInUse = Yes
SBID = 2
SBNextID = 3
SBLastID = 4
H2 H1
(TX) (RX)
Figure 36. System bus physical connections with the OPT-D2 board
OPTD2
Jumper X5 : TX2
X6 : ON
Follower
SBInUse = Yes
SBID = 3
SBNextID = 4
SBLastID = 4
H2 H1
(TX) (RX)
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Description of parameters
OPTD2
Jumper X5 : TX2
X6 : ON
Follower
SBInUse = Yes
SBID = 4
SBNextID = 1
SBLastID = 4
H2 H1
(TX) (RX)
H2
(TX)