Xantrex RS232-XHR, Руководство по эксплуатации

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Installation and Configuration
User Options and Settings
Release 3.1
33
TTL
Shutdown
You can use the Shutdown function to disable or enable the supply's output.
Disabling the supply using TTL shutdown allows you to make adjustments to the
load or to the power supply without shutting down the power supply. With the
RS-232 interface installed, TTL shutdown is activated by a TTL signal to Pin 1 of
the J7 connector on the interface subplate. The shutdown user line uses a 0-5Vdc
TTL input with a high signal range of 2.2-5.0Vdc. The current range of the
shutdown line is 1-10mA. See Figure 2.6, “J7 User Signal Connector Circuit Block
Diagram” on page 35 for a schematic of the J7 connector containing the shutdown
user line.
You can select the logic level of the TTL input by changing the J93 connector on
the RS-232 PCB. Table 2.13 shows the TTL signal levels for the J93 jumper
settings. See
Figure 2.2-3 for the location of the J93 jumper on the printed circuit
board.
Table 2.13 Switch Settings for TTL Shutdown Circuit Logic
PCB Jumper J93 Position TTL Signal Level Supply Output Condition
Pin 2 to Pin 3 (default) HIGH
LOW OFF
ON
Pin 1 to Pin 2 HIGH
LOW ON
OFF