Ametek Amrel PLA 2U, Operation Manual

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M470039-01 REV-F Page 38
PLA 3U MODEL
FIGURE 1.10 – PLA 3U FRONT PANEL
NOTE: All front panel descriptions are the same for 2U, 3U, 4U, and 6U. see Figure 1.8.
.
1. ( – ) Negative input terminal. (one M10 ,two M6 screw threads)
2. ( + ) Positive input terminal. (one M10 ,two M6 screw threads)
3. 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 and
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 fault alarm outputs provide a normally open relay configuration that provides user’s flexibility and isolation
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
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1
0 2
5 3
6
4
5
8
6
9
7
8
10
FIGURE 1.11 – PLA 3U REAR PANEL