2. There are two Remote modes:

1. Remote:

In this mode, return to local can be made by the front panel REM/LOC or via

 

serial port command RMT 0. Set the unit into Remote mode via serial port

 

RMT 1 command.

2.Local Lockout: In this mode the unit can be returned to Remote mode via the serial port RMT 1 command or by turning off the AC power until the display turns off, and then turn it to on again. In local Lockout mode, the front panel REM/LOC button is not ac- tive. Set the unit into Local Lockout mode via serial port RMT 2 command.

7.2.6RS232/RS485 port in Local mode

When the power supply is in Local mode, it can receive queries or commands. If a query is received, the power supply will reply and remain in Local mode. If a command that affects the output is re- ceived, the power supply will perform the command and change to Remote mode.

Serial commands may be sent to set the status registers and read them while the unit is in Local mode. If the Enable registers are set (refer to Section 7.11) the power supply will transmit SRQ’s while in Local.

7.2.7Front panel in Remote mode

Front panel control in Remote mode is Disabled except for:

1.PREV: use to preview the Voltage and Current setting.

2.OVP/UVL: use to preview the OVP/UVL setting.

3.LOC/REM: use to set the unit into Local mode.

In Local Lockout mode, only the PREV and OVP/UVL pushbuttons are active.

7.3 REAR PANEL RS232/RS485 CONNECTOR

The RS232/RS485 interface is accessible through the rear panel RS232/RS485 IN and RS485 OUT connectors. The connectors are 8 contact RJ-45. The IN and OUT connectors are used to connect power supplies in a RS232 or RS485 chain to a controller. Refer to Fig. 7-1 for IN/OUT connectors.

SG

NC

TXD +

RXD- RXD+

TXD-

NC

NC

8 7 6 5 4 3 2 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RX

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TX

 

 

 

 

 

 

 

 

 

 

 

 

 

TXD- RXD-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TXD +

 

 

 

 

 

 

 

 

 

 

 

 

 

RXD+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SG

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Shield

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8 7 6 5 4 3 2 1

 

 

 

(connector enclosure)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OUTIN

Fig.7-1: Rear panel J3 IN/OUT connectors pinout

NOTE

Tx and Rx are used for RS232 communication. Txd +/- and Rxd +/- are used for RS485 communication. Refer to RS-232 and RS-485 cabling and connection details.

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Page 59
Image 59
TDK 5KW technical manual Rear Panel RS232/RS485 Connector, 6 RS232/RS485 port in Local mode, Front panel in Remote mode

5KW specifications

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