10
Entek IRD 6687 Protection Monitor
6687 Monitor
This diagram shows a configuration that allows a more negative reading on the display
(downscale) when the plunger is compressed.
Note the following when connecting an LVDT:
z
The 6691 power supply polarity must match the transducer. For example, if using an
Entek IRD 15383, the 6691 must be configured to provide positive voltage. For more
information on configuration of the power supply, refer to the manual on 6600 monitor
power supplies and backplanes.
z
You may ground the cable shield at either end of the cable. Do not ground the shield at
both ends.
16
18
19
24
23
20
21
22
17
7
10
15
11
12
13
14
9
8
2
6
4
5
3
1
EARTH
NEUTRAL
LINE
43
44
48
45
46
47
32
42
35
38
41
40
39
36
37
34
33
31
29
30
27
28
26
25
C ha nne l 1 In put Si gna l
TYP ICA L WIRING FOR MODE L 15383 LINEA R VAR IABL E
D IFFE R ENTIAL TR ANS FOR MER (L VD T) TO 6600 VIB RATION MONITOR
S ig nal C om mo n
+ 18 VDC
Jumper = more negative
reading on display when
plunger is compressed
+18 VDC
Signal Common
Input Signal
