Programmable Multi-Axis Servo Drive Power Supply Unit Operation Manual
ID no.: CA97556-001 Date: 03/2015
moog
14
Mechanical installation
2.2.2
Cabinet design
The placement of components in the switch cabinet is a key factor in operating plant
and machinery without disturbance. Your planning should take account of the following
points:
y
Assess the assemblies used in terms of their electromagnetic compatibility.
y
Split the cabinet into zones of different power and interference levels.
y
Keep units susceptible to interference at a minimum clearance of 200 mm
(7.87 in) from the following components:
− Servo drive
− Input and output chokes, transformers
− Mains, motor, DC power supply and braking resistor cables (even if shielded)
− Relays and contactors (even if interference-suppressed)
y
When installing close, use isolating plates mounted directly and conductively on
the backing plate as shielding.
y
When using a motor contactor or a reactance coil, the respective component
should be directly mounted to the servo drive.
y
Do not use fluorescent lamps in cabinets, as they emit high-frequency
interference.
y
Provide contactors, relays, solenoid valves, switched inductors and capacitors
with suppressors.
y
The mains filter must be sealed tight as far as possible, and be mounted on
the backing plate across a wide area at the feed-in point. The backing plate
must have a low-resistance connection to the central earthing point. No
unfiltered cables may be routed on the mains input side of the filter, to prevent
interference.
y
Servo Drives may only be installed on one side (to the left or right) of larger
sized devices. On the other side a device of equal or smaller size must be
installed.
y
A vertical offset of 18.5 mm (0.73 in) must be allowed between the top fixing
screws for devices of size 1 to size 5 and devices of size 6A (see Figure 2.5 and
Figure 2.9).
If you need more details on installation please contact the Moog Helpline (see
section 5.3, p. 65).
2.2
Effective EMC installation
2.2.1
General notes
Power Supply Units are components intended for installation in industrial and
commercial plant and machinery. They must only be installed in switch cabinets
providing minimum IP4x protection.
Commissioning (i.e. starting intended operation) is only permitted when strictly
complying with EMC product standard IEC/EN 61800-3.
NOTE:
The new EMC product standard for variable-speed electric drives is
IEC/EN 61800-3:2008. The transition period for the old IEC/EN 61800-3:1996
ended on October 1, 2007.
The installer/operator of a machine and/or item of plant must provide proof of
compliance with the protection targets stipulated in the EMC standard.
The multi-axis system is a special case with regard to EMC installation. The high
DC link voltage (up to 770 V DC) and its routing over long cables between the Power
Supply Unit and Multi-Axis Servo Drives demands great care when implementing EMC
installation.
Timely planning and diligent implementation of the EMC installation measures detailed
here will help avoid complex and costly retooling of plant.
