User manual

5
Installation
Electrical Reset and Startup Lockout
The optional electrical reset circuit consists of an electrical solenoid in
series with a thermistor. If the rated voltage is continuously applied to the
reset circuit at machine startup, the reset solenoid energizes for a fixed
time interval (approximately 30 seconds), after which time the solenoid is
automatically de-energized by the thermistor. This action provides a trip
lockout during machine startup roughness. The voltage must be removed
from the reset circuit when the machine is stopped to allow the thermis-
tor to cool off. The switch mechanism can then be reset electrically by a
momentary application of the reset voltage or it can be reset manually.
If the machine is restarted immediately after a shutdown, the lockout
period will be shortened because the thermistor will be hot. An increase
in the ambient temperature will also shorten the lockout period.
Specifications
Function––Armature mechanism trips on high vibration and operates snap
action switch(es).
Amplitude Range––See How to Order ("C").
Frequency Range––0 to 3600 RPM.
Setpoint Adjust––0 to 100% of range. External setpoint adjustment.
Reset––Local reset, plus optional remote reset electrical coil. See How
to Order ("D").
Start Delay––Applying reset coil voltage at start up holds mechanism
from tripping for 20-30 seconds, after which the switch is active. Requires
electric reset option.
Temperature Range–– -40ºF to 160ºF
Enclosure––High strength copper-free (
4
⁄10 or 1% max) aluminum alloy.
Environmental Rating––NEMA 4, IP 65 & CE Mark (NEMA 4X Optional).
Switch Contact(s) Rating––15 amps, 125, or 480 VAC;
1
⁄8 hp, 125 VAC;
1
⁄4 hp, 250 VAC;
1
⁄2 amp, 125 VDC;
1
⁄4 amp, 250 VDC.
Hazard Rating––See How to Order ("A").
Weight––4.0 lb
Note