Measures Against Static Electricity / Noise - Mitsubishi Electric MELFA CR750 Series Instruction Manual

3.4 Measures against static electricity / noise

Use a shielded wire to avoid influence of noise. Perform wiring through the shortest path so that the cable length
can become shorter. In case of malfunction, etc. due to static electricity or noise, ground the extended safety unit
using the terminal for grounding shown in the dimensional outline drawing *2 (Fig. 7-1). Use an M3 screw with a
length of 8 mm for grounding.
An operator with static electricity should not touch CNUSR21 or CNUSR22. Malfunction may occur due to the
static electricity. If there is a possibility of accidental touch, use the electrostatic protection cover shown in Fig.
3-3 to prevent accidental touching of CNUSR21 or CNUSR22. Fix the cover to the extended safety unit using the
screw hole shown in Fig. 7-1 *3.
Screw to be used: M3, 6 mm long
Tightening torque: 0.63 Nm
Fig. 3-3 Electrostatic protection cover
Measures against static electricity / noise 3-15
3 Signals and wiring
Recommended
material: iron