9
installation
To assure compatibility with EMC standards, any signal level wiring such as
transducer, reset, lockout, or 4-20 mA wiring should utilize shielded cable in
EMI proof conduit, separate from any power wiring. The signal conduit and
power-wiring conduit can be connected at the 440-cable entry via a “T” fitting.
Sealing
In 440 installations where temperature and humidity conditions vary around
the dew point, it is important that the cover plate be evenly and firmly fastened
down with the four screws provided.
Although the switch enclosures meet NEMA standards for water tightness, it
will do no good if proper sealing of both cover and wiring entrances are not
followed. Please remember that a hollow pipe through which wires may enter
a switch may conduct moisture as well.
Electrical Wiring
Wiring to the Vibration Switch
The following sections refer to the wiring diagrams at the end of this section.
For 440/450 Models Using Triac or Analog Switch
7
Lockout (Optional)
Not Used
8
6
Remote Reset
Not Used
9
5
Common
Input Signal (Optional)
10
4
Shutdown
Common
11
3
Circuit
4-20mA Analog Output
12
2
AC Input
Alarm
13
1
Power
Circuit
14
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