User`s guide

Adept Cobra PLC600/PLC800 Robot User’s Guide, Rev C 57
Facility Overvoltage Protection
The user must protect the robot from excessive overvoltages and voltage spikes. If the
country of installation requires a CE-certified installation, or compliance with
IEC 1131-2,
the following information may be helpful:
IEC 1131-2 requires that the installation must
ensure that Category II overvoltages (i.e., line spikes not directly due to lightning strikes)
are not exceeded. Transient overvoltages at the point of connection to the power source
shall be controlled not to exceed overvoltage Category II, i.e., not higher than the impulse
voltage corresponding to the rated voltage for the basic insulation. The user-supplied
equipment or transient suppressor shall be capable of absorbing the energy in the
transient.
In the industrial environment, nonperiodic overvoltage peaks may appear on mains
power supply lines as a result of power interruptions to high-energy equipment (such as a
blown fuse on one branch in a 3-phase system). This will cause high current pulses at
relatively low voltage levels. The user shall take the necessary steps to prevent damage to
the robot system (such as by interposing a transformer). See
IEC 1131-4 for additional
information.
AC Power Diagrams
Figure 4-5. Typical AC Power Installation with Single-Phase Supply
DANGER: AC power installation must be performed by a
skilled and instructed person - see Section 2.12 on
page 33. During installation, fail-safe lockout measures
must be used to prevent unauthorized third parties from
turning on power.
E
E
N
N
L
L
F1 10A
Adept CobraPLC
600/800 Robots
1Ø 200–240VAC
User-Supplied
AC Power Cable
Note: F1 is user-supplied, must be slow blow.
1Ø
200–240VAC
20A
L = Line
N = Neutral
E = Earth Ground