User Manual
AMETEK Programmable Power
BPS Series
57
It is possible to reverse the polarity of the RI input. This requires the use of the following bus command:
OUTPut:RI[:LEVel] HIGH
/* Sets RI polarity to active high.
OUTPut:RI[:LEVel] LOW
/* Sets RI polarity to active low (Factory default)
The remote control interface must be used to change this setting. Once set, the polarity setting remains in
effect.
The way the BPS responds to a remote inhibit event can be programmed over the remote control interface
using the OUTP:RI:MODE command. See BPS Programming Manual for details on changing modes. The
mode set is retained at power off and recalled at power up so stays in effect till changed again over the
bus.
The following modes are supported.
MODE
OPERATION
LATCHING
A TTL low at the RI input latches the output in the
protection shutdown state. This state can only be cleared by
sending a OUTPut:PROTection:CLEar command over the
bus.
LIVE
The output state follows the state of the RI input. A TTL low
or contact closure at the RI input turns the output off; a TTL
high or open contact turns the output on. This mode is
equivalent to using the Output On/Off button on the front
panel.
Default mode. Units are shipped in this mode.
OFF
The instrument ignores the RI input.
Table 4-12: Remote Inhibit Mode Settings
NOTE: When using the Remote Inhibit input, it will be necessary to disconnect any RI connection to
the BPS master unit when turning on the BPS master unit. During initialization, the RI
connection must be OPEN or initialization will be halted with the message WARING FOR
AUXILIARY displayed on the LCD screen.
