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Wiring the System
4.7 Connecting 200-240 VAC Power to Robot
Specifications for AC Power
Table 4-6. Specifications for 200/240VAC User-Supplied Power Supply
Auto-Ranging
Nominal
Voltage
Ranges
Minimum
Operating
Voltage a
Maximum
Operating
Voltage
Frequency/
Phasing
Re<strong>com</strong>mended
External Circuit
Breaker,
User-Supplied
200V to 240V 180V 264V 50/60Hz
1-phase
10 Amps
a Specifications are established at nominal line voltage. Low line voltage can affect robot
performance.
DANGER: AC power installation must be performed by a
skilled and instructed person - see Section 2.11 on
page 29. During installation, fail-safe lockout measures
must be used to prevent unauthorized third parties from
turning on power.
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 <strong>com</strong>pliance 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.
52 <strong>Adept</strong> <strong>Cobra</strong> <strong>PLC600</strong>/PLC800 Robot User’s <strong>Guide</strong>, Rev B