Parallel Connections - Chroma 63200 Series Quick Start Manual

High Power DC Electronic Load 63200 Series Quick Start Guide
sensing compensates for voltage drop in applications that require long
lead lengths. It is useful when the load is operating in CV or CR mode,
or when it needs precise measurement. Figure 2-2 also illustrates a
typical setup for remote sensing operation.
CAUTION
2.3.3

Parallel Connections

The 63200 Series DC Electronic Load with same voltage specification can
be paralleled to increase the loading power range. The Electronic Load
can be paralleled for static and dynamic operation in CC mode; however,
only static operation is available for CR, CV and CP modes.
The Loads is linked via RS-485 cable to RS485 port (see 2.3.4 RS-485
Parallel Connection Diagram). RS485 address represents the ID of each
Load in the parallel group as the figure shown below. It enables the
MASTER controller to connect to the Slave models correctly via the
settings of RS485 ADDRESS and control the parallel load. There is only
one Master in the parallel group, the rest are slaves. For 63200 Series, it
can parallel up to 6 models and these Electronic Loads can be operated
simultaneously via Master in static or dynamic mode.
There are two operation modes in this parallel function:
The first is MASTER mode. The master gets the total setting commands
from the remote control or front panel and then informs the slaves what
setting current they should do according to their model. (The slave model
has to be ready first.) So the only one needs to programmed is the
master.
The second is MASTER SYNC mode. Each Load gets the current setting
from its own remote control or front panel, the master controls the loads
H/W synchronization action so that all loads can be operated with same
action at the same time no matter in static or dynamic mode.
10
The potential of V-sense red connector must be
higher than that of V-sense black connector.
RS485 ADDRESS
3