Control Unit Cabling; Control Cable Sizing - Vacon 20 CP Installation, Technical And Maintenance Manual

Control unit
5.1

Control unit cabling

The principal terminal block placement is shown in Figure 27 below. The control board is equipped
with 23 fixed control I/O terminals. 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 35.
5.1.1

Control cable sizing

The I/O (control and relays) and STO cables must be screened multi core cables with following cable
sizes:
2
• 0.14...1.5 mm without ferrules
2
• 0.25...1.5 mm with ferrules (no plastic neck)
2
• 0.25...1.5 mm with ferrules (with plastic neck)
Find the tightening torques of the I/O (control and relays) and STO terminals in the Table below.
I/O terminals and STO termi-
nals (screw M2)
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
Figure 27. Control terminals.
Terminal screw
Table 34. Control cable tightening torques.
Tightening torque
Nm lbs-in.
0.22 min 1.95 min
0.25 max 2.21 max
vacon • 45
5