WZA/L1 - Emergency Stop Switch
WZA emergency stop switch equipped with cord tension control system is a stable switch intended to use in serial security circuits of mining machines, for example along the route of the conveyors, cable railways etc. In case of emergency the user causes the execution of switch and breaking the serial security circuit by pulling the cord or by pressing the emergency stop button. Every switch has optical signaling of his status (engaged / not engaged) by LED flashing. The manufacturer provides the implementation of device with or without the connection chamber - with the possibility to connect it with a loudspeaking device. Additional signaling contacts provide remote switch status identification throuth digital data transmission network. The electrical equipment is made as intrinsically safe, what allows it to be used in mining plants in chambers with danger of methane and / or coal dust explosion.
Technical data
ATEX certificate number |
KDB 04 ATEX 270 |
Functional safety level |
SIL2 |
Fulfillment of requirements of norm |
PN-EN 60947-5-5 |
Device parameters: |
|
Supply voltage U |
5 ÷ 15 VDC |
Power consumption I |
10 mA |
Maximum cord length |
75 m |
Maximum cord tensioning system unlocking force |
75 N |
Blockade working force in state of proper cord tension |
120 ÷ 150 N |
Maximum cord blockade tendon movement |
4 cm |
Normal working conditions |
|
Device category |
M1 |
Casing type |
Ex ia I Ma |
Working temperature range |
0ºC ÷ 60ºC |
Casing protection degree |
IP65 |
Dimensions (Width x Height x Depth) |
262 x 252 x 176 mm |
Number of outlets |
2 type M32x1,5 |
Weight |
5 kg |