User's Manual

GO MBW Getting Started Guide
GO MBW Getting Started GuideGO MBW Getting Started Guide
GO MBW Getting Started Guide
Draft Version - Confidential - Page 10
When both power supplies are installed (in AC only), it is recommended that you
plug in both power supplies. When only one power supply is connected, the unit will
beep continuously to indicate the absence of power in the second connection. This
indicates either a faulty AC module, or the fact that one power supply has not been
connected. To stop the warning beep, either connect the second power supply, thus
creating a redundant power source, or disconnect the second power supply unit
completely from the WNC unit.
Electricity Supply
AC Power Operated Unit
Before connecting the WNC unit to the electricity supply, review the information
given on the apparatus rating plate and verify that:
• Your power supply is single phase A.C. (alternating current) of the stated
frequency with neutral nominally at earth potential.
• Your supply voltage is 100-240 VAC or 115-240 VAC (refer to rating label).
• The current rating is within the capacity of your UPS outlet.
• Your plug or electricity supply circuit is fitted with a suitable branch circuit which
is rated 125% of the unit rating or of the selected power cord.
• You should use molded cables when installing the WNC.
DC Power Operated Unit
• The WNC unit should be used in areas designated as “RESTRICTED ACCESS
LOCATIONS” with limited traffic.
• Power supply cables should be 2 sets of 2x18 AWG copper wire: using UL Listed
cable only.
• Use a UL-approved x A circuit breaker as disconnect device incorporated in the
fixed Wiring (between centralized DC power system and power entry module).
• Verify that “ON” and “OFF” positions of the circuit breaker are clearly marked and
that the circuit breaker is accessible.
• This equipment should be connected directly to the DC supply system grounding
electrode conductor, to a bonding jumper from a grounded terminal bar, or to a
bus to which the DC supply system-grounding electrode is connected.