Chapter 5: System Cable Installation
Specifications for AC Power
Table 5-11. Specifications for 200/240 VAC User-Supplied Power Supply
Auto-Ranging
Nominal
Voltage
Ranges
Minimum
Operating
Voltage
1
Maximum
Operating
Voltage
Frequency/
Phasing
Recommended
External Circuit
Breaker, User-
Supplied
200 V to 240 V
180 V
264 V
50/60 Hz, 1-phase
10 Amps
1
Specifications are established at nominal line voltage. Low line voltage can affect robot per-
formance.
NOTE:
The robot system is intended to be installed as a piece of equipment in a
permanently-installed system.
WARNING:
ELECTROCUTION RISK
Cobra 350 robot systems require an isolating transformer for connection to
mains systems that are asymmetrical or use an isolated (impedant) neutral.
Many parts of Europe use an impedant neutral.
WARNING:
ELECTROCUTION RISK
AC power installation must be performed by a skilled and instructed person—
see the
Robot Safety Guide
. During installation, unauthorized third parties must
be prevented from turning on power through the use of fail-safe lockout meas-
ures.
Failure to use appropriate power (less than or more than the rated voltage
range of 200 - 240 VAC) can lead to malfunction or failures of the robot or haz-
ardous situations.
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 over-voltage 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.
05624-000 Rev. K
Cobra 350 User's Guide
71