Remote Inhibit Or Enable Input; Figure 5-24: Remote Inhibit Control Screen; Figure 5-25: Remote Inhibit Pins On Db9 For Afx-2L And Afx-4L Versions - Pacific Power Source AFX Series Operation Manual

5.18.7 Remote Inhibit or Enable Input

The remote inhibit may be used to provide output shut down if a rear panel rack door is
opened while the output is on. A contact closure between pins 7 and 9 (or an external 5Vdc
supply if MODE RELAY CONTROL is enabled) will allow control of the output relay from
either the front panel or a remote control interface. . "A" version models have the remote
inhibit function on the Aux I/O DB25 connector instead.
There are three modes of operation for this input:
1. Disable mode: In his mode, the Remote Inhibit inputs are not active so this function
is turned off. No short between the RI pins is required to enable the output in this
mode.
2. Remote Inhibit mode: The two pins have to be shorted for the output to be enabled
from the front panel or remote command. This is a necessary but not a sufficient
condition to enable the output. If the output is enabled and the remote inhibit
connection is open, a fault is generated. This mode is recommended for interlock
safety applications such safety cages and test fixture interlocks.
3. Remote Enable mode: The output can be enabled by shorting these two pins,
regardless of the output enable command/button. It is a sufficient condition to
enable the output.
The mode can be selected from the SYST (SYSTEM) menu screen using the Interfaces,
Remote Inhibit selection as shown below.

Figure 5-25: Remote Inhibit Pins on DB9 for AFX-2L and AFX-4L Versions


Entire Contents Copyright 2018 by Pacific Power Source, Inc. (PPS) • All Rights Reserved • No reproduction without written authorization from PPS.
AFX Series Power Source Operation Manual

Figure 5-24: Remote Inhibit Control Screen

AFX SERIES® OPERATION MANUAL
SECTION 5: UNPACKING AND INSTALLATION
Page 91 of 485