Figure 1.9 – Pla 2U Rear Panel - Ametek Amrel PLA Series Operation Manual

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FIGURE 1.9 – PLA 2U REAR PANEL
Rear Panel Descriptions
23. ( + ) Positive input terminal. (one M10 screw thread)
24. ( – ) Negative input terminal. (one M10 screw thread)
25. Relay connector.
a. RY_NC Dry Contacts alarm: a fault alarm is declared if there is a loss of AC power or protections are
triggered. The fault alarm outputs provide a normally closed relay configuration that provides user's
flexibility and isolation required to an external controller or an external alarm panel. The delay is 3 second
b. RY_CO Relay Common. Provides the common (reference) con nection only for RY_NC or RY_NO
c. RY_NO Dry Contacts alarm: a fault alarm is declared if there is a loss of AC power or protections are
triggered. The fault alarm outputs provide a normally open relay configuration that provides user's
flexibility and isola tion required to an external controller or an external alarm panel. The delay is 3 second.
d. RI_1 Remote Inhibited (RI) is used as an emergency switch to disable the system. RI can be connecting to a
switch or an open collector device that shorts the RI pin to common (EGND) whenever it is necessary to
disable input of the unit. Once RI is activated, it will turn off the dc output. In order to re -activate the unit,
the connection between common and RI pin needs to be open again, and it will have 3 seconds dela y.
26. External programming port.
27. Connector, GPIB/IEEE-488.2.
28. Connector, DB9 for RS232.
29. Connector, RJ45 for Ethernet interface (LAN).
30. Connector, USB.
31. Chassis / Line ground lug screw.
32. AC power inlet with external fuse holder.
M470039-01 REV-F
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23 24
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