VT6L Maintenance  18. Controller Unit 
 
VT series Maintenance Manual    Rev.2  167 
 
(4) 
Tighten the screws by using the supplied hex 
lobe wrench until the fieldbus module is fixed 
completely. 
Tightening torque: 0.25 N·m 
 
 
 
 
 
Connect the D-sub connector to the fieldbus 
I/O module. 
Tighten the two securing screws. 
 
Tightening torque: 0.25 N·m 
 
 
Install the spacers to the gasket.   
(6 spacers: 
the gasket is supplied with the 
module.) 
 
 
Pass the relay cable through the gasket. 
 
 
Temporarily secure the relay cable connector to the optional block with a nut 
(M12).