Control Unit Cabling; Control Cable Sizing - Vacon 20 x Installation & Maintenance

vacon • 46
5.3

Control unit cabling

The principal terminal block placement is shown in Figure 34 below. The control board is equipped
with 18 fixed control I/O terminals and the relay board with 5. Additionally, the terminals for the Safe
Torque Off (STO) function (see chapter 9) can be seen in the picture below. All signal descriptions
are also given in Table 21.
5.3.1

Control cable sizing

The I/O (control and relays) and STO cables must be screened multi core cables with the following
cable sizes:
• 0.14 -1.5 mm
• 0.25 - 1.5 mm
• 0.25 - 1.5 mm
Find the tightening torques of the I/O (control and relays) and STO terminals in the Table 20 below.
5
Figure 34. Control terminals.
2
without ferrules
2
with ferrules (no plastic neck)
2
with ferrules (with plastic neck).
Table 20. Control cable tightening torques.
Terminal screw
I/O terminals and STO termi-
nals (screw M2)
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
Tightening torque
Nm lb-in.
0.22 min 1.94 min
0.25 max 2.21 max
Control unit