TDK-Lambda GH10-100 - Multi Power Supply Connection (Daisy-Chain) to RS232, RS485, USB or LAN

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4.8 Multi Power Supply Connection (Daisy-Chain) to RS232,
RS485, USB or LAN
A Daisy-chain configuration of up to 32 units can be connected to RS232, RS485, USB, LAN or
optional communication (i.e. IEEE or MODBUS TCP). The first unit connects to the controller or PC
via RS232, RS485, USB, LAN or optional communication, while the RS485 bus connects the other
units. The user must set all Power Supplies in the chain to a unique address.
NOTE
Multi-Power Supply Connection (Daisy-Chain) is not supported for EtherCAT communication
interface (EtherCAT power supply can’t be the Master/First unit in Daisy-Chain connection).
1. First unit connection: Select a communication Interface. Refer to section 4.2.2.
2. Other units’ connection: The other units on the bus are connected via RS485 interface.
Refer to Figure 4–21 for typical connections.
3. Using the Linking cable supplied with each unit (Refer to Figure 4–21), connect each unit’s
OUT connector to the next unit’s IN connector.
Figure 4–21: Multi Power Supplies RS232/485, USB or LAN Connection
NOTE
If ten or more Power Supplies are connected in a Daisy-chain configuration, it is recommended to
connect 120Ω resistive termination at the last unit’s RS-485 OUT connector:
120Ω, 0.5W between TXD+ to TXD-.
120Ω, 0.5W between RXD+ to RXD-.
8 PIN CONNEC
TOR (IN)
8 PIN CONNE
CTOR (OUT)
Pin No.
Name
Pin No.
Name
Housing
Shield
Housing
Shield
8
SG
8
SG
3
TXD-
3
RXD-
6
TXD+
6
RXD+
4
RXD-
4
TXD-
5
RXD+
5
TXD+
Table 4-2: Serial Link Cable with RJ-45 Shielded Connectors (P/N: GEN/RJ45)
IN
OUT
POWER SUPPLY
#0
IN
OUT
POWER SUPPLY
#1
IN
OUT
POWER SUPPLY
#2
IN OUT
8
1
1
8
POWER SUPPLY
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