Working power: 220VAC ±15%
Load current: ≤5A
Insulation resistance: >500MΩ
Output signal: switching signal
Ambient temperature: -20 ° C ~ 60 ° C
Ambient humidity: ≤90%
Dimensions: Φ38×105mm
Weight: 0.5KG
Protection level: IP66
Detection speed range: 1-220 rpm
Trip time: 3-18 seconds
Response time: <2mS
Detection interval H2: ≤ 8mm
Minimum safe working distance H1: ≥20mm

 working principle:
The main difference between the slip switch and the proximity switch is that the delay circuit is installed inside. The internal delay can be adjusted according to the different speeds of the passive shaft to achieve the jamming of the protection device. The rotary detector is mounted on the passive shaft as shown in the figure. Through the test piece mounted on the driven shaft, the speed switch pulse signal is used by the principle of electromagnetic induction (when the test piece is rotated to a distance of 4-8 mm from the speed switch), taking Figure 1 as an example: the instantaneous speed of the power supply The switch delays the relay pull-in by the serially connected relay for a set number of seconds. When the passive shaft of the device rotates one turn, it needs to give the speed switch two pulses. If the speed switch is set to 8 seconds, the device rotates one turn less than 8 seconds. The speed switch has no action through the series relay (the relay keeps sucking). When the device rotates for more than 8 seconds, the speed switch considers that the jam has been blocked, and the relay is tripped through the series relay (the relay is powered off). ), protection equipment

 Features:
1. Non-contact, no moving parts, no wear, long safety life, low maintenance cost, suitable for the environment with harsh environment.
2. Integrated structure, free of setup, debugging, and easy to install.
3. Small size, light weight and long life
4. With load short-circuit protection function - mistakenly connecting the rotating detector directly to the power supply will not damage the rotating detector. (Cannot exceed 1 minute) 5. The output signal can be used in conjunction with field devices or DCS control system.
6. With status indicator. When the device is running normally, the indicator light is “flashing”; when it is stopped, the indicator light is “always on”.
7. Trip time adjustable 3-18S

Installation Notes:
All transmissions, such as screw conveyors, hoists, belt conveyors, zippers, crushers, etc., should be installed at their drive shafts (end of the machine), see figure below. Note: The installation position of the rotation speed monitor in the installation diagram depends on the specific situation. It is not necessary to stick to this picture. As long as the normal operation is not affected, the condition of “pulse signal with uniform probe interval per unit time” can be satisfied. .

Mechanical installation process:
1. Remove the end cover, drill ≥Φ12 hole in the center of the end cover, drill Φ5.l hole and tap M6 in the lower part of the end cover (cooperate with the two holes of the rotation speed monitor bracket), then fix the end cover and bracket with screws.
2. Drill Φ5.1 hole on the shaft head, tapping M6, depth 10~15mm
3, tighten the double-headed screw
4, install the end cover
5, install test piece, F ≥ 20mm and fixed with a nut
6, install the rotation speed monitor, adjust G = 4mm
Some machines have long drive shafts and extend beyond the end caps. For this type of situation, it is only necessary to make the test piece into a dove shape and fix it on the shaft head (please note the plane of the test piece and the probe plane of the rotational speed monitor). Keep parallel. If it is installed on a metal base, please pay attention to the distance of F to prevent the device from starting up to prevent strong magnetic interference.
Electrical wiring: This product is used in series with the intermediate relay (see the electrical wiring diagram above). The intermediate relay coil has a withstand voltage of 220V.
Test piece: the material is ordinary iron, the number of blades is 2 leaves, and the size of the test piece is 100×10×2mm.
Jump time reference formula: T (trip time) > [60 seconds × 3 (constant value)] ÷ [number of detection × number of revolutions driven]

 Precautions:
1. If it is installed on a metal base, please pay special attention to the distance to prevent the device from starting due to strong magnetic interference.
2. The installation distance is preferably around 4mm to prevent G from changing due to external causes.
3. The intermediate relay and ZG-SD-IV speed switch are connected in series. The two normally open contacts of the intermediate relay are connected in parallel to increase the current capacity.
4. When the auxiliary rotating shaft is slow, the jumping time can be adjusted.
5. It is strictly forbidden to connect the power directly to the unconnected relay. If the product is damaged due to direct serial connection, it is “man-made damage” and is not covered by the free warranty.
6. Open the ZG-SD-IV speed switch for outdoor installation. Install the rain cover as much as possible to extend the service life of this product.