WEG CFW500 Series, Руководство по безопасности

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CFW500 | 13
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Installation
For XC7 cabling, consider the following:
„
Wire stripping length: 6.0 mm (0.236 in).
„
Wire gauge from 0.5 mm² (20 AWG) to 1.5 mm² (16 AWG).
„
Maximum tightening torque of 0.40 Nm (3.5 lbf.in).
„
Run the cables separated from the remaining circuits (power, 110 V / 220 V control, etc.).
NOTE!
The other control signals that are not related to safety (digital/analog inputs
and outputs) are connected to one of the control accessories of the frequency
inverter. The cables for these control signals must not exceed 30 m when the
CFW500 frequency inverter is equipped with the CFW500-SFY2.
2.3 TYPES OF INSTALLATION
There are two types of installation, depending on the type of the safety device that requests
the safety function:
„
Installation with dry contact devices, i.e. devices that have electromechanical output
(conventional relays, for example).
„
Installation with OSSD (Output Signal Switching Device), i.e. solid state devices that have
outputs containing test pulses (light curtain, for example).
Figure 2.2 on page 13 illustrates the installation with dry contacts, and Table 2.3 on page 14
describes its operation.
+ 24 Vdc
STO1
STO2
GND
1
2
3
4
5
6
Figure 2.2: Installation using dry contacts