PROTECT YOUR EQUIPMENT WITH
TORQ SPEED SWITCH
ZERO SPEED MODELS
The TORQ Speedetex® Zero
Speed Switch is used
in bulk material handling/processing systems to monitor speeds
of belt conveyors, screw conveyors, bucket elevators, rotary
feeder shafts, rotating drums and other types of rotating machinery
to protect elevators, feeders and conveyors from speed related
damage resulting from broken belts, overloads, or belt slippages.
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SWITCH OPERATION:
The output logic is selectable to be "on" or "off" in
the alarm mode as set by the user. If set for zero speed "on" at
start up, there will be an 8 second pre-start delay before the
switch operates, to allow for equipment start up. If the
pre-start delay time is exceeded before 1.1 RPM (1.2 RPM @ 1/60
turn response option) is reached, the unit will go into alarm.
The relay will de-energize and the N.C. contacts will be closed.
This will also occur at a power failure.
If the output logic is selected "off" the relay will energize,
and teh N.C. contacts will open until 1 RPM is exceeded. This
condition will remain until the speed of the ZSS drops below
.9 RPM, (.8 RPM @ 1/60 turn response option) when the N.C. contacts
will open.
Options available are 1/60 turn response and supply voltages.
| SPECIFICATIONS: |
| Input Power - Options |
120 VAC and 240 VAC ± 10%
50/60 HZ
12-15 VDC, 22-30 VDC, and 100-130 VDC |
| Output Power |
10.0 amps contact rating @ 250 VAC/30
VDC |
| Zero Speed |
1 RPM |
| Prestart Delay |
8 seconds (zero speed "ON" mode) |
| Power Failure Protection |
Goes into alarm state |
| Zero Speed Reset Hysteresis |
10% (for 1/16 turn response)
20% (for 1/60 turn response) |
| Zero Speed |
Output logic selectable to "on" or "off" by pushbutton |
| Continuous Running Speed |
5000 RPM Maximum |
| Direction of Rotation |
Either - no effect |
| Shaft Torque Required |
4 oz. in. (.0029 Kg Meter) |
| Radial Load |
50 Lbs. (22.7 Kg) Maximum |
| Bearing Life |
10,000 HR @ 5000 RPM (Lower with radial side load) |
| Operating Temp Range |
-22°F to 150°F (-30°C to 66°C) |
| Case Construction |
NEMA 4 |
| Shipping Weight |
4 Lbs. (1.8 Kg) |
Custom Modifications available
such as special shaft machining, diameters, mounting, finishes,
supply. |
