Ametek Amrel PLA 2U, Operation Manual

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M470039-01 REV-F Page 35
Rear Panel
23. ( – ) Negative input terminal. (Thread : one M12 ,two M6)
24. ( + ) Positive input terminal. (one M12 two M6 screw threads)
25. Relay connector.
a . RY_NC Dry Conta cts a la rm: a fa ult a la rm is decla red if there is a loss of AC power or protections a re
triggered. The fault alarm outputs provide a normally closed relay configuration that provides user’s
flexibility a nd isola tion required to a n externa l controller or a n externa l a la rm pa nel. The dela y is 3 second
b. RY_CO Rela y Common. Provides the common (reference) connection only for RY_NC or RY_NO
c. RY_NO Dry Conta cts a la rm: a fa ult a la rm is decla red if there is a loss of AC power or protections a re
triggered. The fa ult a la rm outputs provide a norma lly open rela y configura tion tha t provides user’s
flexibility a nd isola tion required to a n externa l controller or a n externa l a la rm pa nel. The dela y is 3 second.
d. RI_1 Remote Inhibited (RI) is used a s a n emergency switch to disa ble the system. RI ca n be connecting to a
switch or a n open collector device tha t shorts the RI pin to common (EGND) whenever it is necessa ry to
disa ble input of the unit. Once RI is a ctiva ted, it will turn off the dc output. In order to re -a ctiva te the unit,
the connection between common a nd RI pin needs to be ope n a ga in, a nd it will ha ve 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.
33. Water inlet ( Pipe size: 3/8” NPT)
34. Water outlet ( Pipe size: 3/8” NPT)
35. Water valve power connector
FIGURE 1.7 – PLW 2U REAR PANEL