5
vacon • 46
Control unit
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
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.
Figure 34. Control terminals.
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
2
without ferrules
•
0.25 - 1.5 mm
2
with ferrules (no plastic neck)
•
0.25 - 1.5 mm
2
with ferrules (with plastic neck).
Find the tightening torques of the I/O (control and relays) and STO terminals in the Table 20 below.
Table 20. Control cable tightening torques.
Terminal screw
Tightening torque
Nm
lb-in.
I/O terminals and STO termi-
nals (screw M2)
0.22 min
0.25 max
1.94 min
2.21 max
