23 Commander SE User Guide
www.controltechniques.com Issue Number 8
4.3.8 Minimum Mounting Clearances
Figure 4.11 Minimum mounting clearances (applies to all drive sizes)
4.4 Electrical installation
Electric shock risk
Thevoltagespresentinthefollowinglocationscancausesevereelectricshock
and may be lethal:
• AC supply cables and connections
• Output cables and connections
• Many internal parts of the drive, and external option units
Isolation device
The AC supply must be disconnected from the drive using an approved isolation
device before any cover is removed from the drive or before any servicing work
is performed.
STOP function
The STOP function does not remove dangerous voltages from the drive or any
external option units.
Stored charge
The drive contains capacitors that remain charged to a potentially lethal voltage
after the AC supply has been disconnected. If the drive has been energised, the
AC supply must be isolated at least ten minutes before work may continue.
Normally, the capacitors are discharged by an internal resistor. Under certain,
unusual fault conditions, it is possible that the capacitors may fail to discharge,
or be prevented from being discharged by a voltage applied to the output
terminals. If the drive has failed in a manner that causes the display to go blank
immediately, it is possible the capacitors will not be discharged. In this case,
consult Control Techniques or their authorised distributor.
1
8
1
8
100mm
(/in)
3
4
100mm
(/in)
3
4
10mm
(/in)
3
8
10mm
(/in)
3
8
20mm
(/in)
3
4
WARNING
WARNING
WARNING
WARNING
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