57
8303460000 Rev A IA672-04-01-Rev. I
12.2. Configure the LAN Supply
The LAN power supply, at the head of the multi-drop chain, is called the Master supply.
12.2.1. To Set Up the Master Power Supply:
A. Connect the LAN to a computer as described in section 4.
B. Enable the LAN option with it’s rear panel switch. See Figure 3.
C. Set the supply into RS-232 mode by setting rear-panel SW1 bit 6 to DOWN.
D. Connect a RS-485 Link cable from the rear J3-OUT jack to the next supply’s J3-IN.
E. Switch AC power on the supply.
F. Set the supply’s RS-485 address as described below.
12.2.2. To Set the RS-485 Address:
In addition to the supply’s IP address, the multi-drop requires setting an RS-485
address. It is viewed on the front panel of the power supply by setting it to local mode
(see section 3.2.1) and pressing and holding the REM/LOC button. The address may
then be changed by turning the voltage encoder.
The default RS-485 address is 6. It may be set to any value from 0 to 30. The
RS-485 address is not related to the IP address. However, it is required that no other
power supply on the multi-drop chain have the same RS-485 address.
12.3. Connect and Configure the RS-485 Supplies
The RS-485 linked power supplies are called the Slave supplies. They may be individually
commanded and queried using the LAN port on the Master supply.
12.3.1. To Verify the Multi-drop is Enabled:
The RS-485 power supplies must be Multi-drop enabled. All newer Genesys power
supplies have multi-drop enabled by default.
A. The power supply product label may have “-MD” in the model description.
B. Or try running the multi-drop chain. Open the LAN web page. On the DC Power
page, click the “Refresh List” control (see section 6.5.1). The addresses of all the
multi-drop enabled RS-485 supplies will be shown in the list
C. Or use the RS-232/485 port with a communication program such as
HyperTerminal to send the “MDAV?” query. if the response is “1”, the multi-drop is
enabled in the supply. Refer to the Technical Manual for details on using the RS-
232/485 port
12.3.2. To Set Up an RS-485 Chain:
A. If the supply has the LAN option, disable the option by sliding the LAN enable
switch to DOWN. See section 3.3.1 and Figure 3
B. Set the supply into RS-485 mode by setting rear-panel SW1 bit 6 to UP
C. Connect the RS-485 Link Cables from the master’s J3-OUT to the slave’s J3-IN
D. Power-up the supplies
E. Set the supply’s RS-485 address as described in section 12.2.2
F. While you are setting the address, it is required to also set the BAUD rate to
19.2K by turning the current encoder
To Next Page
Loading...
